Answer:
y=10x+28
Step-by-step explanation:
y=10x+28
y=(10*-2)+28
y=-20+28
y=8
The linear equation of the line is y + 2 = 10(x - 8)
How to determine the line equation?The slope is given as:
m = 10
The point is given as:
(x1, y1) = (8, -2)
The equation in point slope form is calculated as;
y - y1 = m(x - x1)
So, we have:
y + 2 = 10(x - 8)
Hence, the linear equation of the line is y + 2 = 10(x - 8)
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The z score associated with the highest 10% is closest to
a. .0398
b. .5398
c. 1.28
d. -1.28
The z score associated with the highest 10% is closest to: option (c) 1.28
-To find the z score associated with the highest 10%, first determine the percentage that corresponds to the lower 90%, since the z score table typically represents the area to the left of the z score.
- Look up the 0.90 (90%) in a standard normal distribution (z score) table, which will give you the corresponding z score.
-The z score closest to 0.90 in the table is 1.28, which corresponds to the highest 10% of values.
Therefore, the z score associated with the highest 10% is closest to 1.28.
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i
need help with this question please help
Verify that the function f(x) = -4x2 + 12x - 4 In x attains an absolute maximum and absolute minimum on [1,2] Find the absolute maximum and minimum values. Hint: In 2 – 0.7, Inį -0.7. Verify that
The absolute maximum value is 5 at x = 3/2 and the absolute minimum value is 4, which occurs at both x = 1 and x = 2.
To find the absolute maximum and minimum values of the function f(x) = -4x^2 + 12x - 4 on the interval [1, 2], we need to check the critical points and the endpoints of the interval.
First, let's find the critical points by taking the derivative of the function:
f'(x) = -8x + 12
To find the critical points, set f'(x) to 0 and solve for x:
-8x + 12 = 0
x = 3/2
Now, we have 3 points to check: x = 1, x = 3/2, and x = 2.
Evaluate the function at each point:
f(1) = -4(1)^2 + 12(1) - 4 = -4 + 12 - 4 = 4
f(3/2) = -4(3/2)^2 + 12(3/2) - 4 = -9 + 18 - 4 = 5
f(2) = -4(2)^2 + 12(2) - 4 = -16 + 24 - 4 = 4
Comparing the function values at these points, we find that the absolute maximum value is 5 at x = 3/2 and the absolute minimum value is 4, which occurs at both x = 1 and x = 2.
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Answer:
The absolute maximum value is 5 at x = 3/2 and the absolute minimum value is 4, which occurs at both x = 1 and x = 2.
To find the absolute maximum and minimum values of the function f(x) = -4x^2 + 12x - 4 on the interval [1, 2], we need to check the critical points and the endpoints of the interval.
First, let's find the critical points by taking the derivative of the function:
f'(x) = -8x + 12
To find the critical points, set f'(x) to 0 and solve for x:
-8x + 12 = 0
x = 3/2
Now, we have 3 points to check: x = 1, x = 3/2, and x = 2.
Evaluate the function at each point:
f(1) = -4(1)^2 + 12(1) - 4 = -4 + 12 - 4 = 4
f(3/2) = -4(3/2)^2 + 12(3/2) - 4 = -9 + 18 - 4 = 5
f(2) = -4(2)^2 + 12(2) - 4 = -16 + 24 - 4 = 4
Comparing the function values at these points, we find that the absolute maximum value is 5 at x = 3/2 and the absolute minimum value is 4, which occurs at both x = 1 and x = 2.
Step-by-step explanation:
How do you solve this?
Answer:
The answer is
\( {13}^{3} \)Step-by-step explanation:
\(( {13})^{2}( {13})^{ - 4} ( {13})^{5} \)To solve the expression , use the rules of indices
Since the bases are the same and are multiplying we add the exponents
That's
\( {a}^{x} \times {a}^{y} \times {a}^{z} = {a}^{x + y + z} \)So we have
\(( {13})^{2}( {13})^{ - 4} ( {13})^{5} = {13}^{2 - 4 + 5} \\ = {13}^{ - 2 + 5} \)We have the final answer as
\( {13}^{3} \)Hope this helps you
y=1/8x−1
−5x+4y=−13
A. (0,−1)
B. (8,0)
C. (1,−78)
D. (2,−34)
gwendolyn was physically present in the united states for 93 days in 2023, 189 days in 2022, and 48 days in 2021. under the substantial presence test formula, how many days is gwendolyn deemed physically present in the united states in 2023?
Gwendolyn is deemed physically present in the United States for 93 days in 2023 under the substantial presence test formula.
The substantial presence test is used by the United States Internal Revenue Service (IRS) to determine if a person qualifies as a resident for tax purposes based on their physical presence in the United States.
The formula for calculating the substantial presence test is as follows:
(Number of days present in the current year) + (1/3 of the number of days present in the first preceding year) + (1/6 of the number of days present in the second preceding year)
Using this formula, we can calculate Gwendolyn's total days of physical presence in the United States for the three years:
2021: 48 days
2022: 189 days
2023: 93 days
Plugging in the values into the formula:
93 + (1/3 * 189) + (1/6 * 48) = 93 + 63 + 8 = 164
Since the result is less than 183 days, Gwendolyn is not considered a resident for tax purposes in 2023. However, her presence in the United States will still be taken into account for determining her tax obligations.
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PLease explain this to me in your answer. It's the same as the previous post, don't answer unless if you actually know how to do this.
Answer:
the first point is (-3,0) the second is (0,-1)
Step-by-step explanation:
what's (9-6)x8 I really need to know!!
Answer:
24
Step-by-step explanation:
9-6 = 3 x 8 = 24
9-6 comes first because it is in parenthesis
what other answers are correct?
2 answers:
B) integer
C) Rational
=========================
The original expression simplifies to -4 which is part of the set of integers {..., -3, -2, -1, 0, 1, 2, 3, ...}
We can write -4 as a fraction of two integers -4 = -4/1, so it is also a rational number.
Because it's rational, it cannot be irrational.
The set of whole numbers is {0, 1, 2, 3, ...} which doesn't involve negative values. If you want to include negative values, then use the set of integers.
Please help I will give brainliest and a lot of points :)
The inequality shaded in the graph is given as follows:
y ≥ 5x/2 + 3.
How to define a linear function?The slope-intercept equation for a linear function is presented as follows:
y = mx + b
In which:
m is the slope.b is the intercept.The graph crosses the y-axis at y = -3, hence the intercept b is given as follows:
b = 3.
When x increases by 2, y increases by 5, hence the slope m is given as follows:
m = 5/2.
Then the equation of the line is given as follows:
y = 5x/2 + 3.
The line is a solid line, and values above it are plotted, hence the inequality is given as follows:
y ≥ 5x/2 + 3.
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Find the missing value to the nearest hundredth.
Cos = 5/36
Answer:
Step-by-step explanation:
"cos" by itself is meaningless. It needs an argument.
cos(x°) = 5/36
x° = arccos(5/36) ≅ 82.2°
Rewrite the following equation in slope-intercept form.
16x + 10y = 15
plz help
Answer:
im not sure im really sorry
Step-by-step explanation:
im answering this because i have the same question
A parking garage has 5 levels below ground. Each level is the same height. Consider ground level to be 0. The depth of the the fifth level of the parking garage is −118.5 ft. What is the depth of the first level of the parking garage?
Using proportions, it is found that the depth of the first level is of -23.7 ft.
-----------------------
As each level has the same height, this question can be solved by proportions, with a rule of three.5 levels have a depth of -118.5ft. What is the depth of 1 level?5 levels - -118.5 ft
1 level - x
Applying cross multiplication:
\(5x = -118.5\)
\(x = -\frac{118.5}{5}\)
\(x = -23.7\)
The depth of the first level is of -23.7 ft.
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Find a basis of the subspace of R^4 consisting of all vectors of the form [x1 3x1+x2 -7x1+8x2 3x1-6x2 ]
The subspace of R⁴ consisting of all vectors of the form [x₁, 3x₁+x₂, -7x₁+8x₂, 3₁-6x₂] has a basis consisting of the vectors [1, 3, -7, 3] and [0, 1, 8, -6].
Vectors are an essential component of linear algebra and are used to represent quantities that have both magnitude and direction.
Now, let's consider the subspace of R⁴ consisting of all vectors of the form [x₁, 3x₁+x₂, -7x₁+8x₂, 3₁-6x₂].
To find a basis for this subspace, we need to find a set of vectors that are linearly independent and span the subspace.
Let's consider the equation a[1, 3, -7, 3] + b[0, 1, 8, -6] = [0, 0, 0, 0] for some coefficients a and b. This gives us the system of equations:
a = 0
3a + b = 0
-7a + 8b = 0
3a - 6b = 0
The first equation immediately gives us a = 0, and substituting this into the second equation gives us b = 0 as well. Therefore, the two vectors we found are linearly independent, and hence form a basis for the subspace.
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In a family with 7 children, excluding multiple births, what is the probability of having 7 boys? Assume that a girl is as likely as a boy at each birth. Let E be the event that the family has 7 boys, where the sample space S is the set of all possible permutations of girls and boys for 7 children. Find the number of elements in event E, n(E), and the total number of outcomes in the sample space, n(S). n(E) = n(S)=
The probability of having 7 boys in a family with 7 children is 1 out of 128, as there is only one favorable outcome out of 128 total possible outcomes.
To find the probability, we need to calculate n(E) and n(S).
In this case, event E represents the scenario where all 7 children are boys. The sample space S consists of all possible permutations of boys and girls for the 7 children, which is 2^7 = 128.
This is because each child has 2 possibilities (boy or girl), and we multiply these possibilities for all 7 children.
Since event E includes only one specific outcome (all boys), n(E) is equal to 1. Therefore, both n(E) and n(S) are 1 and 128, respectively. The probability of having 7 boys is given by n(E)/n(S) = 1/128.
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What is an example of a linear function table?.
An example of a linear function table is y=3x
A linear function is used to relate an independent variable and a dependent variable by introducing a rate of change(function) of which the independent variable is equated to find the dependent variable. Linear functions are those whose graph is a straight line. The following is the form of a linear function. a + bx = y = f(x). One independent variable and one dependent variable make up a linear function. X and Y are the independent and dependent variables, respectively.
for example:
y=3x hence is the dependent variable as it depends on the change of x and 3 is the rate of change which is a constant and is determined by the division of the values of y/x hence to make a table of y over x of which y is determined by the rate of change the unrelated variable x, 3.
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Evaluate –x + 3.9 for x = –7.2.
–11.1
11.1
3.3
–3.3
Each side of a square mirror is 2 feet long. What is the mirror's perimeter?PLSSS HELP IVE BEEN STUCK ON THIS QUESTION FOR HOURS!!!!!!!!!!!!!!!
Answer:
The square perimeter is 8 ft long
Step-by-step explanation:
Answer:
Perimeter of the square =4*all length
Step-by-step explanation:
Perimeter =4*2=8
The Perimeter of the mirror =8
data envelopment analysis (dea) is best used in an environment of low divergence and high complexity. t/f
True. Data Envelopment Analysis (DEA) is best used in an environment of low diverges and high complexity. In such situations, DEA can effectively analyze and compare the efficiency of decision-making units, even when dealing with multiple inputs and outputs.
Data Envelopment Analysis (DEA) is a method used to measure the efficiency of decision-making units. It works by analyzing a set of inputs and outputs to determine the relative efficiency of each unit. DEA is best suited for situations where there is low diverges among the units being analyzed, meaning they are all operating under similar conditions. Additionally, DEA is most effective in situations of high complexity, where there are multiple inputs and outputs that need to be considered. Therefore, the statement that DEA is best used in an environment of low divergence and high complexity is true.
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5. Shirley buys a fax machine and sells it to Devi at a gain of 25% on the cost price. Devi then ses the fax machine to Amirah at a loss of 250 on the price at which she buys it from Shirley. If Amirah pays $360 for the fax machine. how much die Shirley pay for it
The amount Shirley paid for the Fax machine is $488.
How to find the amount Shirley paid for the machine?Shirley buys a fax machine and sells it to Devi at a gain of 25% on the cost price.
let the cost Shirley bought the machine = x
Therefore,
selling price = 25% of x + x = 0.25x + x = 1.25x
Devi then sells the fax machine to Amirah at a loss of 250 on the price at which she buys it from Shirley.
Amirah pays $360 for the fax machine.
Therefore,
loss = cost price - selling price
250 = 1.25x - 360
Therefore,
250 + 360 = 1.25x
610 = 1.25x
x = 610 / 1.25
x = $488
Therefore, the amount Shirley paid for the Fax machine is $488.
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are natural numbers closed under subtraction
The natural numbers are "closed" under addition and multiplication. ... The subtraction of two natural numbers does NOT necessarily create another natural number (3 - 10 = -7). The division of two natural numbers does NOT necessarily create another natural number (1 ÷ 2 = ½). not closed under subtraction and division.
Your math class is taking a field trip to the National Oceanic and Atmospheric Association in Boulder. The cost of a presentation and a tour of the facility is a flat fee of $60 for the group plus an additional $3 per person. Write an equation that gives the total cost C as a function of the number of students s.
A square prism and a cylinder have the same height. the area of the cross-section of the square prism is 157 square units, and the area of the cross-section of the cylinder is 50π square units. based on this information, which argument can be made?
We can argue that the volume of square prism is greater than the volume of the cylinder.
To find the volume of a prism, we need to multiply the of area of base by the height. Since the height is the same for both the square prism and the cylinder, we can focus on comparing the areas of their respective cross-sections.
The area of the cross-section of the square prism is given as 157 square units. Since the cross-section is a square, we can find the side length by taking the square root of the area. So, the side length of the square is √157 units.
The area of the cross-section of the cylinder is given as 50π square units. Since the cross-section is a circle, we can find the radius by taking the square root of the area divided by π. So, the radius of the cylinder is √(50π/π) = √50 units.
Now, to compare the volumes, we need to calculate the volume of each shape. The volume of the square prism is equal to the area of the base multiplied by the height, which is (√157)^2 * height. The volume of the cylinder is equal to the area of the base (π * (√50)^2) multiplied by the height. Since the heights are the same, we can compare the volumes by comparing the areas of the bases.
Since (√157)^2 is greater than (√50)^2, we can conclude that the area of the base of the square prism is greater than the area of the base of the cylinder. Therefore, the volume of the square prism is greater than the volume of the cylinder.
In summary, based on the given information, we can argue that the volume of the square prism is greater than the volume of the cylinder.
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Lily wants to buy 4 pounds of cereal for her camping trip. The boxes are each 18 ounces. According to the number line, how many boxes will she need to buy to have at least 4 pounds?
5 boxes
4 boxes
2 boxes
3 boxes
Answer:
Look below.
Step-by-step explanation:
1 pound=16 ounces
If each cereal box contains 18 then that means that one box has 1 pound and 2 ounces. We need about 72 ounces to reach 4 pounds.
72/18=4 -------> 4 boxes of cereal.
Please help me fill out the rest I got stuck on the one with 11
Please help! Show your work, I don't understand!
Solve by first square rooting each side of the equation.
(2x + 2)2 = 36
{2, –4}
{2, –4}
{–3, 2}
{–3, 2}
{3, –2}
{3, –2}
{4, –2}
Answer:
x = -4, 2
Step-by-step explanation:
(2x + 2)² = 36
Remember that the square root of 36 has a positive and a negative root.
(2x + 2) = ±6
2x + 2 = -6 2x + 2 = 6
2x = -8 2x = 4
x = -4 x = 2
Therefore, the solution(s) of the equation are x = -4, 2
(Chapter 14) If f(x,y) has two local maximal, then f must have a local minimum.TrueFalse
It is true that the existence of two local maxima does not guarantee the presence of a local minimum. It is possible for a function to have multiple local maxima and no local minimum.
For example, consider the function f(x,y) = x^4 - 4x^2 + y^2. This function has two local maxima at (2,0) and (-2,0), but no local minimum. Therefore, the statement "if f(x,y) has two local maximal, then f must have a local minimum" is false. The presence or absence of local maxima and minima depends on the behavior of the function in the immediate vicinity of a point, and cannot be determined solely based on the number of local maxima. It is possible for a function to have an infinite number of local maxima and minima, or none at all. Therefore, it is important to carefully analyze the behavior of a function in order to determine the presence or absence of local extrema.
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The American Medical Association reported: "During the first hour after using cocaine, the user's risk of heart attack increases nearly 24 times. The average (mean) age of people in the study who suffered heart attacks soon after using cocaine was only 44. That's about 17 years younger than the average heart attack patient. Of the 38 cocaine users who had heart attacks, 29 had no prior symptoms of heart disease." Assume that the standard deviation of the age of people who suffered heart attacks soon after using cocaine was 10 years. In a random sample of size 49, what is the probability the mean age at heart attack after using cocaine is greater than 42?
A. 0.4207
B. 0.5793
C. 0.0808
D. 0.9192
The probability the mean age at heart attack after using cocaine is greater than 42 is 0.9192. Hence, the correct option is D. 0.9192.
The standard deviation of the age of people who suffered heart attacks soon after using cocaine was 10 years. In a random sample of size 49, what is the probability the mean age at heart attack after using cocaine is greater than 42?We are given the following details:
The mean age of people in the study who suffered heart attacks soon after using cocaine was only 44.
Standard deviation = 10
Sample size = 49
Now we need to find the z-score using the formula:
z = (x - μ) / (σ / √n)
wherez is the z-score
x is the value to be standardized
μ is the mean
σ is the standard deviation
n is the sample size.
Substitute the values in the formula as given,
z = (42 - 44) / (10 / √49)z = -2 / (10/7)
z = -1.4
Probability of z > -1.4 can be found using the standard normal distribution table or calculator.
P(z > -1.4) = 0.9192
Therefore, the probability the mean age at heart attack after using cocaine is greater than 42 is 0.9192. Hence, the correct option is D. 0.9192.
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I need help with this please and thank you it’s due tomorrow
Answer:
x = 6
Step-by-step explanation:
The two triangles are similar so to find x we can use similarity ratio
x/18 = 8/24 cross multiply fractions
24x = 144 divide both sides by 24
x = 6
Simplify each expression. select the correct answer from the dropâ€""down menu. −6(3i)(−2i) = 2(3 − i)(−2 4i) = 2i(4 − 5i) =
By simplifying each expression:
−6(3i) (−2i) = -36
2(3 − i)(−2 + 4i) = -4+28i
2i(4 − 5i) = 10+8i
Simplifying each expression step by step:
1. −6(3i)(−2i) = -6 (-6i²)
= 36 (-1)
= -36
2. 2(3 − i)(−2 + 4i)
= 2 x (-6+12i+2i-4i²)
= -12 +24i +4i - 8i²
= -12 - 8i² +28i
=-12 - 8 (-1) + 28i
= -4+28i
3. 2i(4 − 5i)
= 8i - 10i²
= 8i -10(-1)
= 10+8i
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Which conversions from scientific notation to standard notation are true? Select the four correct answers.
1.71 times 10 Superscript 3 Baseline = 0.00171
8.05 times 10 Superscript 5 Baseline = 805,000
2.4 times 10 Superscript 4 Baseline = negative 24,000
8.25 times 10 Superscript negative 3 Baseline = negative 8,250
7.09 times 10 Superscript negative 6 Baseline = 0.00000709
3.99 times 10 Superscript 5 Baseline = 300,099
8 times 10 Superscript 7 Baseline = 80,000,000
1.03 times 10 Superscript negative 4 Baseline = 0.000103
scientific notation to standard notation is true
8.05 times 10 Superscript 5 Baseline = 805,000
7.09 times 10 Superscript negative 6 Baseline = 0.00000709
8 times 10 Superscript 7 Baseline = 80,000,000
1.03 times 10 Superscript negative 4 Baseline = 0.000103
To alternate, more than a few from scientific notation to standard form, circulate the decimal point to the left (if the exponent of ten is a -ve no), or to the right (if the exponent is +ve no). You have to circulate the factor as usually because the exponent indicates. Do not write the power of ten anymore.The right format for scientific notation is an x 10^b wherein a is no. or decimal quantity such that absolutely the cost of a is extra than or same to 1 and much less than ten or, 1 ≤ |a| < 10. b is the energy of 10 required so that the clinical notation is mathematically equal to the unique quantity.
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Answer:
C. 80 times 10 Superscript 3 baseline
Step-by-step explanation: