Answer:
To find the quotient, you must start by dividing 25 into 1,658.
Step-by-step explanation:
Copy and complete each of the equalities
below using the options given.
a) sin-¹)=30° 45° 60°
(b) cos-¹) = 30° 45° 60°
C) tan-¹)=30° 45° 60°
Completing the equalities using the given options, we have:
\(a) sin^(-1)(1) = 90°\\b) cos^(-1)(1/2) = 60°\\c) tan^(-1)(√3) = 60°\)
a) \(sin^(-1)(1) = 90°\)
The inverse sine function, \(sin^(-1)(x)\)gives the angle whose sine is equal to x. In this case, we are looking for the angle whose sine is equal to 1. The angle that satisfies this condition is 90 degrees, so\(sin^(-1)(1) = 90°\).
b) \(cos^(-1)(1/2) = 60°\)
The inverse cosine function, cos^(-1)(x), gives the angle whose cosine is equal to x. Here, we are looking for the angle whose cosine is equal to 1/2. The angle that satisfies this condition is 60 degrees, so \(cos^(-1)(1/2)\)= 60°.
c) \(tan^(-1)(√3) = 60°\)
The inverse tangent function, tan^(-1)(x), gives the angle whose tangent is equal to x. In this case, we are looking for the angle whose tangent is equal to √3. The angle that satisfies this condition is 60 degrees, so tan^(-1)(√3) = 60°.
Completing the equalities using the given options, we have:
\(a) sin^(-1)(1) = 90° b) cos^(-1)(1/2) = 60°c) tan^(-1)(√3) = 60°\)
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a) The completed equalities are:
sin-¹(x) = 30°, sin-¹(x) = 45°, sin-¹(x) = 60°
b) The completed equalities are:
cos-¹(x) = 30°, cos-¹(x) = 45°, cos-¹(x) = 60°
c) The completed equalities are:
tan-¹(x) = 30°, tan-¹(x) = 45°, tan-¹(x) = 60°. C.
a) sin-¹(x) = 30°, 45°, 60°
The inverse sine function, sin-¹(x), gives the angle whose sine is equal to x.
Let's find the angles for each option given:
sin-¹(x) = 30°:
If sin-¹(x) = 30°, it means that sin(30°) = x.
The sine of 30° is 0.5, so x = 0.5.
sin-¹(x) = 45°:
If sin-¹(x) = 45°, it means that sin(45°) = x.
The sine of 45° is √2/2, so x = √2/2.
sin-¹(x) = 60°:
If sin-¹(x) = 60°, it means that sin(60°) = x.
The sine of 60° is √3/2, so x = √3/2.
The completed equalities are:
b) cos-¹(x) = 30°, 45°, 60°
The inverse cosine function, cos-¹(x), gives the angle whose cosine is equal to x.
Let's find the angles for each option given:
cos-¹(x) = 30°:
If cos-¹(x) = 30°, it means that cos(30°) = x.
The cosine of 30° is √3/2, so x = √3/2.
cos-¹(x) = 45°:
If cos-¹(x) = 45°, it means that cos(45°) = x.
The cosine of 45° is √2/2, so x = √2/2.
cos-¹(x) = 60°:
If cos-¹(x) = 60°, it means that cos(60°) = x.
The cosine of 60° is 0.5, so x = 0.5.
Therefore, the completed equalities are:
c) tan-¹(x) = 30°, 45°, 60°
The inverse tangent function, tan-¹(x), gives the angle whose tangent is equal to x.
Let's find the angles for each option given:
tan-¹(x) = 30°:
If tan-¹(x) = 30°, it means that tan(30°) = x.
The tangent of 30° is 1/√3, so x = 1/√3.
tan-¹(x) = 45°:
If tan-¹(x) = 45°, it means that tan(45°) = x.
The tangent of 45° is 1, so x = 1.
tan-¹(x) = 60°:
If tan-¹(x) = 60°, it means that tan(60°) = x.
The tangent of 60° is √3, so x = √3.
The completed equalities are:
tan-¹(x) = 30°, tan-¹(x) = 45°, tan-¹(x) = 60°. c)
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Using the sinusoid determine which value is greater.
sin351∘ or sin357∘
sin351∘ is larger
b) sin(−205) or sin193∘
sin193∘ is larger
Using sinusoid we see since 193° < 205°, sin (193°) > sin (205°), sin 193° is greater.
A sinusoid is a curve with similar characteristics to the sine or cosine function. A sinusoidal wave is a wave that has the same pattern as a sine or cosine wave when it oscillates over time. It's characterized by the wave's wavelength, period, and amplitude. Using the sinusoid, determine which value is greater, sin 351° or sin 357°. Sin 351° and sin 357° have the same values; therefore, neither of them is greater. The sine function is periodic, meaning that it repeats after 360°. Furthermore, sin(x) = sin(360° - x); therefore, sin(351°) = sin(360° - 9°) = sin(9°), and sin(357°) = sin(360° - 3°) = sin(3°).Both sine functions are equal; therefore, neither of them is greater. b) sin (−205) or sin193∘. The answer is sin 193° since sin(x) = sin(- x), which implies that sin(-205°) = sin(205°). Now, sin 193° and sin 205° both fall in the third quadrant. In the third quadrant, sin is negative. Since 193° < 205°, sin (193°) > sin (205°). Therefore, the answer is that sin 193∘ is greater.
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Ostons
3,16 me
pies
1. The Cozy Inn wants to
gather information
about customer
satisfaction
concerning the
cleanliness of its
rooms upon check-in
This Inn has 100
rooms, and the
manager decides to
start with the first room
and place surveys in
this room and every 5th
room thereafter (room
6, room 11. room 16,
etc.)
Complete question :
The Cozy Inn wants to gather information about customer satisfaction concerning the cleanliness of its rooms upon check-in. This Inn has 100 rooms, and the manager decides to start with the first room and place surveys in this room and every 5th room thereafter (room 6, room 11. room 16, etc.). This is an example of a :
Answer: Systematic sampling
Step-by-step explanation: Systematic sampling usually takes an ordered technique or process in dealing with samples. Systematic sampling could assume a randomized start point in selecting observations, However, every other successive points usually follow a fixed order or selection process. In the scenario above, the manager sampling choice involves an ordered and fixed selection process whereby every fifth sample after the initial point is considered. Hence, resulting in predictable points, such as 6th, 11th, 16th, 21st, 26th, 31st,...and so on.
If 5cos^2θ + 6sin^2θ =11/2
, the value of cosecθ =--------
Answer:
\(\csc(\theta)=\sqrt{2}\)
Step-by-step explanation:
Please refer to the attachment below.
We have:
\(5\cos^2(\theta)+6\sin^2(\theta)=11/2\)
Remember that cosine is the ratio of the adjacent side to the hypotenuse. Therefore:
\(\cos(\theta)=\frac{b}{c}\)
And sine is the ratio of the opposite side to the hypotenuse. Therefore:
\(\sin(\theta)=\frac{a}{c}\)
Substitute into our original equation:
\(5(\frac{b}{c})^2+6(\frac{a}{c})^2=11/2\)
Square:
\(\frac{5b^2}{c^2}+\frac{6a^2}{c^2}=\frac{11}{2}\)
Multiply both sides by c squared:
\(5b^2+6a^2=\frac{11}{2}c^2\)
Let’s also multiply both sides by 2 to eliminate the fraction:
\(10b^2+12a^2=11c^2\)
Remember that according to the Pythagorean Theorem:
\(c^2=a^2+b^2\)
Hence, we can make another substitution:
\(10b^2+12a^2=11(a^2+b^2)\)
Distribute:
\(10b^2+12a^2=11a^2+11b^2\)
Subtract 10b² from both sides:
\(12a^2=11a^2+b^2\)
Subtract 11a² from both sides:
\(a^2=b^2\)
Take the square root of both sides:
\(a=b\)
Hence, a is equivalent to b.
Then, we must have a 45-45-90 Triangle.
Therefore, our angle θ is 45°.
We can substitute this back into our original equation to make sure. Remember that cos(45)=sin(45)=√2/2:
\(\begin{aligned} 5\cos^2(45)+6\sin^2(45)&=11/2 \\ 5(\frac{\sqrt{2}}{2}})^2+6(\frac{\sqrt{2}}{2})^2&=11/2 \\ 5(2/4)+6(2/4)&=11/2 \\ 5(1/2)+6(1/2)&=11/2 \\ 5/2+6/2&=11/2 \\ 11/2&=11/2 \;\checkmark \end{aligned} \\\)
Hence:
\(\begin{aligned} \sin(45)&=\frac{1}{\sqrt{2}} \\ \Rightarrow \csc(\theta)&=\sqrt{2} \end{aligned}\)
1) At the supermarket you can fill your own honey bear container. A customer buys 12 oz of honey for $5.40.
From the problem, the cost of 12 oz honey is $5.40
a. the cost of honey per ounce will be :
\(\frac{\$5.40}{12oz}=\$0.45\text{per oz}\)The answer is $0.45 per ounce.
b. the amount of honey per dollar will be :
\(\frac{12oz}{\$5.40}=2.22\)The answer is 2.22 oz per dollar
c. when h = ounces of honey and c = cost in dollar
The equation will be :
For the cost of honey per ounce :
\(c=0.45h\)For the amount of honey per dollar :
\(h=0.22c\)d. Graphing one equation, we will graph c = 0.45h
A line with points (0, 0) and (12, 5.40)
x-axis will be the amount of honey
y-axis will be the cost in dollar.
2. a study by the world health organization found the life expectancy for european countries followed a skewed-left distribution with a mean of 74.21 years and a standard deviation of 3.87 years. (a) should we expect the mean to be less than, greater than, or about the same as the median? explain. (b) at least what percent of individuals live between 65.38 years and 83.04 years? (c) what is the smallest interval guaranteed to capture at least 92% of all life expectancies?
(a) The mean is expected to be less than the median. (b) Approximately 1.98% of individuals live between 65.38 years and 83.04 years. (c) The smallest interval guaranteed to capture at least 92% of all life expectancies is approximately 5.43 years.
(a) In a skewed-left distribution, the tail of the distribution is elongated to the left, meaning that there are some low values that pull the mean towards the left side of the distribution. In such cases, the mean is usually less than the median.
This happens because the mean is sensitive to extreme values, and when there are a few very low values, they can significantly affect the mean. On the other hand, the median represents the middle value of the data, so it is less affected by extreme values and is generally a better measure of the central tendency in skewed distributions.
Therefore, in this case, we would expect the mean (74.21 years) to be less than the median.
(b) To find the percentage of individuals living between 65.38 years and 83.04 years, we can calculate the z-scores for these values and use the standard normal distribution table. The z-score is calculated as (x - mean) / standard deviation.
For 65.38 years:
z1 = (65.38 - 74.21) / 3.87 = -2.27
For 83.04 years:
z2 = (83.04 - 74.21) / 3.87 = 2.27
Using the standard normal distribution table or a calculator, we can find the area under the curve between these two z-scores. Since the standard normal distribution is symmetric, the area between -2.27 and 2.27 is the same as the area between -2.27 and -(-2.27), which is 2 * P(z < 2.27).
Using the standard normal distribution table or a calculator, we find that P(z < 2.27) is approximately 0.9884.
Therefore, the percentage of individuals living between 65.38 years and 83.04 years is approximately 2 * 0.9884 = 1.9768, which is approximately 1.98% (rounded to two decimal places).
(c) To find the smallest interval guaranteed to capture at least 92% of all life expectancies, we need to find the z-score corresponding to the cumulative probability of 0.92.
Using the standard normal distribution table or a calculator, we find that the z-score corresponding to a cumulative probability of 0.92 is approximately 1.4051.
We can then calculate the interval using the formula:
Interval = z * standard deviation
Interval = 1.4051 * 3.87 = 5.43 (rounded to two decimal places)
Therefore, the smallest interval guaranteed to capture at least 92% of all life expectancies is approximately 5.43 years.
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Find the eigenvalues and eigen function of the following matrix
H = 1 0 7i
0 3 0
-7i 0 5
by first block diagonalization and solving secular equation
The eigenvalues of the matrix H are λ₁ = 1 + 3i, λ₂ = 1 - 3i, and λ₃ = 5. The corresponding eigenvectors are v₁ = [7i, 0, 1], v₂ = [-7i, 0, 1], and v₃ = [0, 1, 0].
To find the eigenvalues and eigenvectors of the given matrix H, we will first perform block diagonalization. The matrix H can be written as:
H =\(BDB^(^-^1^)\),
where D is the diagonal matrix of eigenvalues and B is the matrix of eigenvectors. We can find B by solving the equation H·B = B·D.
Finding the eigenvalues
To find the eigenvalues, we solve the secular equation |H - λI| = 0, where I is the identity matrix. Substituting the values of H, we have:
|1 - λ 0 7i |
|0 3 - λ 0 | = 0
|-7i 0 5 - λ|
Expanding the determinant, we get:
(1 - λ)[(3 - λ)(5 - λ) + 7i·(-7i)] - 7i[0 - (-7i)·(7i)] = 0
Simplifying further, we obtain:
(1 - λ)[(3 - λ)(5 - λ) + 49] + 49 = 0
Expanding and collecting terms, we get:
(λ - 1)λ² - 8λ - 250 = 0
Solving this quadratic equation, we find the eigenvalues λ₁ = 1 + 3i, λ₂ = 1 - 3i, and λ₃ = 5.
Finding the eigenvectors
To find the eigenvectors, we substitute each eigenvalue into the equation H·v = λv, where v is the eigenvector corresponding to the eigenvalue.
For λ₁ = 1 + 3i:
(1 - (1 + 3i))v₁₁ + 0v₁₂ + (7i)v₁₃ = 0
(0)v₁₁ + (3 - (1 + 3i))v₁₂ + (0)v₁₃ = 0
(-7i)v₁₁ + (0)v₁₂ + (5 - (1 + 3i))v₁₃ = 0
Simplifying each equation, we get:
-3iv₁₁ + 7iv₁₃ = 0
2v₁₂ = 0
-4iv₁₁ + 4iv₁₃ = 0
Solving these equations, we find v₁ = [7i, 0, 1].
Similarly, for λ₂ = 1 - 3i, we find v₂ = [-7i, 0, 1].
For λ₃ = 5, we find v₃ = [0, 1, 0].
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8k^4 -3k^2 multiplied by 5k^2
Answer: 40k⁶-15k⁴
Step-by-step explanation:
\((8k^4-3k^2)(5k^2)=\\\\8k^4(5k^2)-3k^2(5k^2)=\\\\8(5)(k^{4+2})-3(5)(k^{2+2})=\\\\40k^6-15k^4\)
Result of \(8k^{4} -3k^{2}\) multiplied by \(5k^{2}\) is \(40k^{6}-15 k^{4}\)
Algebra and Exponent
To answer this question you need to know about algebra and exponent rule.
\(8k^{4} -3k^{2}\) multiplied by \(5k^{2}\)
It means the operation will become:
\(5k^{2} (8k^{4} -3k^{2} )=\)
First, \(8k^{4} -3k^{2}\) can't be calculate because of different variable. Even though they both use the letters '\(k\)', \(k^{4}\) dan \(k^{2}\) cannot be added because they have different powers. In algebraic addition, addition can only be done on the same variables and which have the same power.Because \(8k^{4} -3k^{2}\) can not be calculated, then we directly calculate the multiplication \(5k^{2} (8k^{4} -3k^{2} )\)The way to calculate algebraic multiplication with 2 or more variables is the way I call 'rainbow'.
\(5k^{2} (8k^{4} -3k^{2} )=\)
\(5k^{2}\) multiplied by \(8k^{4}\), \(5k^{2}\) multiplied by \(-3k^{2}\) first, then the two are added.
Let's multiply one by one first\((5k^{2}) (8k^{4} )=\)
The way to multiply this is by: numbers multiplied by numbers and letters multiplied by letters
\(=5k^{2} (8k^{4} -3k^{2} )\\=((5)(8))((k^{2} )(k^{4} ))\\=40((k^{2} )(k^{4} )\)
Then how to multiply the letters, this uses the rule of exponents. If there are 2 same variables are multiplied, then the result is a variable with the power of the sum of the two powers.
\(a^{m} a^{n} =a^{m+n}\)
Which means,
\(k^{2}k^{4} =k^{6}\)
Then,
\(=5k^{2} (8k^{4} -3k^{2} )\\=((5)(8))((k^{2} )(k^{4} ))\\=40((k^{2} )(k^{4} )\\=40k^{6}\)
Also same with above,
\(=(5k^{2} )(-3k^{2} )\\=((5)(-3))((k^{2} )(k^{2} )\\=-15k^{4}\)
Add the result of two operation above\(=5k^{2} (8k^{4} -3k^{2} )\\=((5k^{2})(8k^{4})+((5k^{2})(-3k^{2})\\=(40k^{6})+(-15k^{4} )\\=40k^{6}-15k^{4}\)
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the table by finding the circumference and area of a circle with a radius of 279 inches. Substitute 3.14 for pi.
your answers to the hundredths place. (1 point)
Please help me I am so confused
the area of the circle with a radius of 279 inches is approximately 245203.86 square inches.
What is circumference of a circle?
The measurement of the circle's boundaries is called as the circumference or perimeter of the circle. whereas the circumference of a circle determines the space it occupies. The circumference of a circle is its length when it is opened up and drawn as a straight line. Units like cm or unit m are typically used to measure it. The circle's radius is considered while calculating the circumference of the circle using the formula. As a result, in order to calculate the circle's perimeter, we must know the radius or diameter value.
Substituting the given value of r, we get:
C = 2 × 3.14 × 279
C = 1750.92 inches (rounded to two decimal places)
Therefore, the circumference of the circle with a radius of 279 inches is approximately 1750.92 inches.
To find the area of a circle with a radius of 279 inches, we use the formula:
A = πr²
Substituting the given value of r, we get:
A = 3.14 × (279)²
A = 245203.86 square inches (rounded to two decimal places)
Therefore, the area of the circle with a radius of 279 inches is approximately 245203.86 square inches.
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Simplify: 12/10
12 132 1320 120
Answer:
12/10 simplified is 1 2/10 or 1 1/5
Step-by-step explanation:
Answer:
132
100% correct
fastt
13. Calculate the compound interest of an annuity due of BD400 paid each 4 months for 6.2 years if the nominal rate is 3% thirdly? (3 Points)
Therefore, the compound interest of the annuity due of BD 400 paid each 4 months for 6.2 years at a nominal rate of 3% per annum is BD 40,652.17.
Compound interest of an annuity due can be calculated using the formula:A = R * [(1 + i)ⁿ - 1] / i * (1 + i)
whereA = future value of the annuity dueR = regular paymenti = interest raten = number of payments First, we need to calculate the effective rate of interest per period since the nominal rate is given per annum. The effective rate of interest per period is calculated as
:(1 + i/n)^n - 1 = 3/1003/100 = (1 + i/4)^4 - 1
(1 + i/4)^4 = 1.0075i/4 = (1.0075)^(1/4) - 1i = 0.0303So,
the effective rate of interest per 4 months is 3.03%.Next, we can substitute the given values in the formula:
A = BD 400 * [(1 + 0.0303)^(6.2 * 3) - 1] / 0.0303 * (1 + 0.0303)A = BD 400 * [4.227 - 1] / 0.0303 * 1.0303A = BD 400 * 101.63A = BD 40,652.17
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Carlisle Transport had $4,520 cash at the beginning of the period. During the period, the firm collected $1,654 in receivables, paid $1,961 to supplier, had credit sales of $6,916, and incurred cash expenses of $500. What was the cash balance at the end of the period?
To calculate the cash balance at the end of the period, we need to consider the cash inflows and outflows.
Starting cash balance: $4,520
Cash inflows: $1,654 (receivables collected)
Cash outflows: $1,961 (payments to suppliers) + $500 (cash expenses)
Total cash inflows: $1,654
Total cash outflows: $1,961 + $500 = $2,461
To calculate the cash balance at the end of the period, we subtract the total cash outflows from the starting cash balance and add the total cash inflows:
Cash balance at the end of the period = Starting cash balance + Total cash inflows - Total cash outflows
Cash balance at the end of the period = $4,520 + $1,654 - $2,461
Cash balance at the end of the period = $4,520 - $807
Cash balance at the end of the period = $3,713
Therefore, the cash balance at the end of the period is $3,713.
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what is v64 + 36 smplified
Answer: D.) 14
Step-by-step explanation:
First, you first calculate the square root of 64 , this gives you 8
Next, you calculate the square root of 36, which gives you 6
Then, since you are asked to add the two, you add 8 + 6 since this is the simplified version of the original equation.
8 + 6 = 14
Therefore, your answer is D.) 14
Why is it important to center the x value before squaring? Because X-squared is strongly correlated with Because squaring the x values without centering them first reduces the effects of multicollinearity Because the residual plot needs to have a distinct pattern Because centering the x values will straighten the curve of the scatterplot
Centering x values before squaring eliminates the correlation between x and its square term, reducing multicollinearity. This helps to determine independent effects of predictor variables, and can also straighten the curve of a scatterplot.
Centering the x values before squaring is important because it helps to eliminate the correlation between the x variable and its square term. When we square a variable without centering it, we are essentially capturing the effect of both the linear and the quadratic terms.
This can lead to multicollinearity, which occurs when two or more predictor variables are highly correlated with each other.
Multicollinearity can create problems in statistical analyses because it can make it difficult to determine the independent effects of each predictor variable on the outcome variable. Centering the x values before squaring helps to reduce the effects of multicollinearity by eliminating the correlation between the x variable and its square term.
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A hospital can increase the dollar amount budgeted for nurses' overtime wages during the
next year by only 3%. The nurses union has just won a 5% hourly rate increase for the next
year. By what percentage must the hospital cut the number of overtime hours in order to
stay within budget?
The hospital must cut the number of overtime hours by approximately 2.91% in order to stay within budget.
To determine the required percentage reduction in overtime hours, we need to consider the impact of the nurses' hourly rate increase and the limited budget increase for overtime wages.
Let's assume the current budget for nurses' overtime wages is denoted by B, and the total number of overtime hours worked is denoted by H. The current overtime rate per hour is R.
With the 5% hourly rate increase, the new overtime rate per hour becomes 1.05R. Considering the limited budget increase of 3%, the new budget for overtime wages is 1.03B.
To calculate the required percentage reduction in overtime hours, we can set up the following equation:
(1.05R) * (1 - x) * H = 1.03B
where x represents the required percentage reduction in overtime hours.
Simplifying the equation, we have:
(1 - x) * H = (1.03B) / (1.05R)
Now, let's solve for x:
1 - x = (1.03B) / (1.05R * H)
x = 1 - [(1.03B) / (1.05R * H)]
Here, we can see that the required percentage reduction in overtime hours, represented by x, depends on the values of B, R, and H.
It's important to note that without knowing the specific values of B, R, and H, we cannot calculate the exact percentage reduction. However, based on the provided information, we can determine the maximum percentage reduction that the hospital must make to stay within budget.
By assuming that B, R, and H are constant, we can use the given constraints to calculate an approximate percentage reduction. Based on the constraints of a 3% budget increase and a 5% hourly rate increase, the hospital would need to reduce the number of overtime hours by approximately 2.91% to maintain a balanced budget.
Please keep in mind that this approximation may vary depending on the specific values of B, R, and H.
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Form a third-degree polynomial function with real coefficients such that 6 plus i and 7 are zeros
the third-degree polynomial function with real coefficients, having the zeros 6 + i, 6 - i, and 7, is:
f(x) = (x² - 12x + 37)(x - 7)
To form a third-degree polynomial function with real coefficients such that the complex number 6 + i and the real number 7 are zeros, we can use the fact that complex zeros come in conjugate pairs.
Given that 6 + i is a zero, its conjugate 6 - i will also be a zero. Thus, the zeros of the polynomial are 6 + i, 6 - i, and 7.
To find the polynomial function, we start by forming the factors corresponding to each zero:
(x - (6 + i)) --> This corresponds to the zero 6 + i
(x - (6 - i)) --> This corresponds to the zero 6 - i
(x - 7) --> This corresponds to the zero 7
To simplify the factors, we multiply them out:
(x - (6 + i))(x - (6 - i))(x - 7)
= ((x - 6) - i)((x - 6) + i)(x - 7)
= ((x - 6)² - i²)(x - 7)
= ((x - 6)² + 1)(x - 7)
Expanding the squared term:
= (x² - 12x + 36 + 1)(x - 7)
= (x² - 12x + 37)(x - 7)
Therefore, the third-degree polynomial function with real coefficients, having the zeros 6 + i, 6 - i, and 7, is:
f(x) = (x² - 12x + 37)(x - 7)
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It is recommended to drink 8 glasses of water per day. A glass of water contains approximately 237 mL. If Carmelo drank 7 glasses, approximately how many liters of water did he drink?
H. 3,059 L
B. 16. 59L
C. 1,359 L
D. 1,659 L
Answer:
d Because I just took the test and got it right
Tell whether the given number is a solution of 2(3x + 1) 2 7x + 4.
1. -1
2.-2
3.-10
4.0
step by step please :)
The given number is a solution of 2(3x + 1) 2 7x + 4 is 0.
How can you tell if a number is a solution when it is given?Analyze a number to see if it is an equation's solution.
For the variable in the equation, substitute the integer.
On both sides of the equation, simplify the expressions.
Check the equation to see if it's correct. The number provides a solution if it is accurate. The figure isn't a solution if it's false.
Equations with just one solution. If you solve an equation and the result is a variable equal to a number, the problem only has one solution.
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Height is 2ft. More than its width. If the total area is 99ft squared , determine the dimensions of the painting.
Answer: \(9\times 11\ ft^2\)
Step-by-step explanation:
Given
Height is \(2\ ft\) more than its width
Suppose the width is \(x\). So, height becomes \(x+2\)
Area of the painting is \(99\ ft^2\)
Area is the product of width and height
\(\therefore 99=x(x+2)\\\Rightarrow 99=x^2+2x\\\Rightarrow x^2+2x-99=0\\\Rightarrow x^2+11x-9x-99=0\\\Rightarrow (x+11)(x-9)=0\\\Rightarrow x=-11,9\)
Neglect the negative values
\(\text{Width =}9\ ft\\\text{height =}9+2=11\ ft\)
Consecutive terms are __________________.
Answer:
Consecutive terms are numbers which follow each other in order, without gaps, from smallest to largest.
Example:
12, 13, 14 and 15
or
2, 24, 26, 28 and 30 (Even Consecutive)
or
40, 45, 50 and 55 (Consecutive Multiples of 5)
SOURCE/GOOGLE
Answer:
Consecutive numbers are numbers that follows one other in their counting order. Each number in the order will be higher than the previous number by 1.
They are always ordered from the smallest to the largest value.
Step-by-step explanation:
Example :
7, 8, 9, 10 are consecutive numbers.
23, 24, 28, 29 are not consecutive numbers.
Which could be the measures of the three angles of an acute triangle?
As long as the measures of the three angles of a triangle add up to less than 180 degrees, and none of the angles measures more than 90 degrees, the triangle will be acute.
An acute triangle is a triangle that has three acute angles, which are angles that measure less than 90 degrees. All three angles of an acute triangle must be acute, so they must measure less than 90 degrees. The measures of the three angles of an acute triangle can be any combination of angles that add up to less than 180 degrees.
Here are some examples of the measures of the three angles of an acute triangle:
45 degrees, 45 degrees, 90 degrees
30 degrees, 60 degrees, 90 degrees
35 degrees, 40 degrees, 105 degrees
60 degrees, 60 degrees, 60 degrees (this would be an acute equilateral triangle)
As long as the measures of the three angles of a triangle add up to less than 180 degrees, and none of the angles measures more than 90 degrees, the triangle will be acute.
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How would you graph y =- 3x 7?.
Any algebraic expression can be represented graphically. The given problem can be solved as shown in the image attached.
A polynomial in one variable is also an algebraic expression. It can be written in the form aˣn. Here, n is a non-negative integer and a is a real number. The a is also called the coefficient of the term.
The given problem also consists of a polynomial in one variable. It can be solved as such.
We have been told that = y = -3x+7
We need to graph this. For this, we plot at least two values for x and y -
x = 0 and y = 7
x = 1 and y = 4
We plot both these coordinates on the graph which has been attached below.
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Suppose a historian wants to estimate the true mean number of children per household in New York City in 1900. The historian randomly selects 200 household census records from New York City. She records the number of children residing in each household. The historian then computes the mean number of children per household among these 200 households.
The data which is given by the historian is used to find the population, variable, parameter, sample, data, and statistic. He estimated the mean number of children per household in New York City in 1900.
Population - all of the households in New York City in 1900.
Variable - a quantity equivalent to the number of children in a randomly selected household
Parameter - the mean number of children per household in New York City in 1900
Sample - the 200 households selected by the historian
Data - the 200 records collected by the historian
Statistic - the mean number of children per household in the historian's sample.
Complete question:
Suppose a historian wants to estimate the true mean number of children per household in New York City in 1900. The historian randomly selects 200 household census records from New York City. She records the number of children residing in each household. The historian then computes the mean number of children per household among these 200 households. Classify each description as one of a parameter, variable, population, sample, data, or statistic.
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Which equation represents the line that is perpendicular to and passes through (-40,20)?
The equation of the perpendicular line to the given line is: y = -5/4x - 30.
What is the Equation of Perpendicular Lines?The slope values of two perpendicular lines are negative reciprocal of each other.
Given that the line is perpendicular to y = 4/5x+23, the slope of y = 4/5x+23 is 4/5. Negative reciprocal of 4/5 is -5/4.
Therefore, the line that is perpendicular to it would have a slope (m) of -5/4.
Plug in m = -5/4 and (x, y) = (-40, 20) into y = mx + b to find b:
20 = -5/4(-40) + b
20 = 50 + b
20 - 50 = b
b = -30
Substitute m = -5/4 and b = -30 into y = mx + b:
y = -5/4x - 30
The equation of the perpendicular line is: y = -5/4x - 30.
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4. Joe has five times as much money as Bill. However, Joe pays Bill $5 he owes him, after which Joe has just twice the amount Bill now has. How much money did each have in the beginning?
Answer:
Bill starts with $5 and Joe starts with $25Step-by-step explanation:Let Ji and Bi represent the initial amounts that Joe and Bill have at the start. Number after J and B will be used to indicate subsequent steps in the problem.
We are told that "Joe has five times as much money as Bill," which we can write as:
1) Ji = 5Bi
We learn that "Joe pays Bill $5," which we can represent as:
2) J1 = Ji - 5
This would mean that Bill has added $5:
3) B1 = Bi + 5
We are then told that "Joe has just twice the amount Bill now has," which we can write as:
4) J1 = 2B1
===
We can rearrnage and substitute the above relationships to eliminate one of the two variables (B1 or J1)
J1 = Ji - 5 [from 2]
2B1 = Ji - 5 [Substitute 4 to eliminate J1]
Ji = 5Bi [from 1]
2B1 = 5Bi - 5 [Substitute 1 to eliminate Ji]
B1 = Bi + 5 [Rearrange]
2(Bi + 5) = 5Bi - 5 [Use the above expression in the previous equation to eliminate B1]
2Bi + 10 = 5Bi - 5 [Simplify]
-3Bi = -15 [Simplify]
Bi = $5 [Solve]
Ji = 5Bi [from 1]
Ji = 5*(5) [Since Bi = $5]
Ji = $25 [Solve]
Bi = $5 and Ji = $25===
CHECK:
Does Joe has five times as much money as Bill?
Ji = $25 and Bi = $5 YES
When Joe pays Bill $5 he owes him, does Joe has just twice the amount Bill now has?
J1 = $25 - $5 = $20
B1 = $5 + $5 = $10 YES
Write the inequality that matches the description. The boundary line is solid and has a slope of 3/2 and a y-intercept of 8. The area above the line is shaded.
If the area above the line is shaded, it means that the inequality consists in all values of y greater than a certain expression.
If the line is solid, it means that the values of y are greater or equal to a certan expression.
If the line has a slope of 3/2 and a y-intercept of 8, the equation of the line si:
y = 3/2x + 8
adnd consider that the solution are all values of y greater or equal to 3/2x + 8:
y ≥ 3/2x + 8
Last week, Taberah bought milk on sale for $2.25 a gallon. This week, milk is back to its original price of $3.00 a gallon What is the percent increase in the price of milk from last week to this week?
Answer:
33.33%
Step-by-step explanation:
We take
3 divided by 2.25, time 100 = 133.33%
Then We Take
133.33 - 100 = 33.33%
So, the percent increase is 33.33%
what are the inverse operations for addition and multiplication?
Answer:
Operations Inverse operations
Addition Subtraction
Subtraction Addition
Multiplication Division
Division Multiplication
Step-by-step explanation:
i hope this will help you
according to the book of odds, the probability that a randomly selected u.s. adult usually eats breakfast is 0.61.1a) explain what probability 0.61 means in this setting.
The probability of finding such people will get closer to 0.61 as the sample gets bigger.
a) This means that if you were to take a large sample of US adults and inquire them about having breakfast, about 61%(i.e. 0.61) will say that they usually have breakfast.
b) It is, for sure, expected that if we take a sample of 100, around 61% of these americans will say that they usually eat breakfast. But if the number will be 61 exactly is not a certainty and it will vary from sample to sample.
The probability of finding such people will get closer to 0.61 as the sample gets bigger.
Explanation has been provided in the answers above due to their descriptive nature.
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The table shows the relationship between the number of calories Darrell Burns while kayaking and the number of minutes he kayaks
How many calories will Darrell burn in 1 minute while kayaking? Please I need help :(
The number of calories that Darrell will burn in 1 minute while kayaking is given as follows:
4 calories.
How to obtain the number of calories?The number of calories that Darrell will burn in 1 minute while kayaking is obtained applying the proportions in the context of the problem.
For each input-output pair in the table, the constant of proportionality is of 4, hence the number of calories that Darrell will burn in 1 minute while kayaking is given as follows:
4 calories.
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