i need help please!!

Answer:

x<3 or x>5

Step-by-step explanation:

doesn't equal when there are open dots and x must be greater than 5

Answer:

  5√30 ≈ 27.386 square units

Step-by-step explanation:

You want the area of the portion of the plane 5x +2y +z = 10 that lies in the first octant.

The axis-intercepts are found by setting the other variables to zero.

  x-intercept: 5x = 10   ⇒   x = 2

  y-intercept: 2y = 10   ⇒   y = 5

  z-intercept: z = 10

The boundaries of the triangular first-octant portion of the plane will be the lines between these intercepts. The length of each boundary can be found using the distance formula. For example, the length in the X-Y plane will be ...

  d = √((x2 -x1)² +(y2 -y1)² +(z2 -z1)²)

  d = √((0 -2)² +(5 -0)² +(0 -0)²) = √(4+25) = √29

The first attachment shows the other side lengths to be ...

  Y-Z plane: 5√5

  X-Z plane: 2√26

The area of the triangular portion of the plane can be found using Heron's formula. For semi-perimeter s and side lengths a, b, c, the area is ...

  A = √(s(s -a)(s -b)(s -c)) . . . . . . where s = (a+b+c)/2

The second attachment shows the area to be 5√30 ≈ 27.386 square units.

#95141404393

The approximate value of the surface area is 4.32 square units.

To find the area of the surface, we need to first find the equation of the plane and then determine the portion of the plane that lies in the first octant.

The equation of the plane can be written as:

z = 10 - 5x - 2y

To determine the portion of the plane that lies in the first octant, we need to find the points where the plane intersects the x, y, and z axes. Setting x = 0, y = 0, and z = 0 in the equation of the plane, we get:

z = 10 (when x = 0 and y = 0)

y = 5x (when z = 0 and y = 0)

x = 2 (when z = 0 and x = 0)

The portion of the plane that lies in the first octant is bounded by the x-axis, the y-axis, and the line y = 5x. To find the area of this surface, we can use a double integral:

∬R √(1+f_x^2+f_y^2) dA

where R is the region bounded by the x-axis, the y-axis, and the line y = 5x, and f(x,y) = 10 - 5x - 2y.

Converting to polar coordinates, we have:

x = r cosθ

y = r sinθ

The line y = 5x becomes y = 5r cosθ, and the region R is described by:

0 ≤ r ≤ 2sinθ

0 ≤ θ ≤ π/4

The surface area is then:

A = ∫(0 to π/4) ∫(0 to 2sinθ) √(1+f_r^2+f_θ^2) r dr dθ

Using f(x,y) = 10 - 5x - 2y, we can find:

f_r = -5

f_θ = -2r

So we have:

A = ∫(0 to π/4) ∫(0 to 2sinθ) √(1+25+4r^2) r dr dθ

= ∫(0 to π/4) ∫(0 to 2sinθ) √(29+4r^2) r dr dθ

This integral is difficult to evaluate analytically, but it can be approximated using numerical methods or a computer algebra system.

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The answer is D. R2, also known as the coefficient of determination, shows the percentage of the total variation in the dependent variable, Y, that is explained by the explanatory variable.

Of the four answer choices provided, only one is true of R2. Answer D is the correct statement regarding R2. It indicates that R2 shows the percentage of the total variation in the dependent variable, Y, that is explained by the explanatory variable. This statement is commonly used to evaluate the strength of a linear relationship between two variables. It is important to note that a high R2 value does not necessarily mean that the explanatory variable causes the dependent variable, but it does suggest a strong correlation between the two. This answer is provided in one paragraph consisting of three sentences.

In other words, R2 measures the proportion of the variance in the dependent variable that can be predicted from the independent variable(s). A higher R2 value indicates a better fit of the data, while a lower value suggests that the model may not explain much of the variation in the dependent variable.

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The assumption of a finite population is the answer to the question of which condition/assumption is not required for the one-sample t inference for the mean μ of a population.

The one-sample t inference for the mean μ of a population is based on several conditions and assumptions. Let's discuss each of them and identify which one is not a condition or assumption.

Random Sampling: One of the key assumptions is that the data used for the inference is obtained from a random sample. Random sampling ensures that the observations are independent and representative of the population.

Normality: The t inference assumes that the population follows a normal distribution. This assumption is necessary to apply the t-distribution for inference. However, for large sample sizes (typically above 30), the t-inference is robust to deviations from normality due to the Central Limit Theorem.

Independence: The observations in the sample should be independent of each other. This assumption ensures that each observation provides new information and is not influenced by other observations.

Finite Population: The t-inference assumes that the population from which the sample is drawn is finite. This assumption is relevant when the sample size is a large fraction of the population size. If the population is infinite or extremely large, this assumption is not necessary.

Homogeneity of Variance: The t-inference assumes that the variance of the population is the same across all levels of the independent variable. This assumption is known as homogeneity of variance. Violation of this assumption can lead to inaccurate results.

Based on these conditions and assumptions, it can be concluded that the assumption of a finite population is not a condition of the one-sample t inference for the mean μ. The assumption of a finite population is relevant only when the population size is small or the sample size is a large fraction of the population size. In most practical scenarios, where the population size is large or infinite, this assumption is not applicable.

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Answer:

2/8

Step-by-step explanation:

In this question, we are given different arithmetic series and asked to find their sums. The arithmetic series are given in different forms, such as a series of numbers or a series of square roots. We need to use the formulas for the sum of an arithmetic series to find the respective sums.

a) For the series 6 + 14 + 22 + ..., we can see that the first term is 6 and the common difference is 8. We can use the formula for the sum of an arithmetic series, Sn = (n/2)(2a + (n-1)d), where n is the number of terms, a is the first term, and d is the common difference. Substituting the values, we get S15 = (15/2)(2(6) + (15-1)(8)) = 15(12 + 14(8)) = 15(12 + 112) = 15(124) = 1860.

b) For the series √2 + √8 + √18 + ..., we observe that the terms are square roots of numbers. We need to simplify the expression and determine the common difference to find the formula for the nth term. Once we have the formula, we can use the formula for the sum of an arithmetic series to find the sum. The calculation process will be explained in more detail.

c) For the series -40 - 33 - 26 - ..., we can see that the first term is -40 and the common difference is 7. Using the formula for the sum of an arithmetic series, Sn = (n/2)(2a + (n-1)d), we can substitute the values to find the sum.

d) For the series 74 + 63 + 52 + ..., we can observe that the first term is 74 and the common difference is -11. We can use the formula for the sum of an arithmetic series to find the sum.

e) The series is not provided, so it cannot be calculated.

In the explanation paragraph, we will provide the step-by-step calculations for each series to find their sums.

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If the skills have a choice of making a model plane or a model proposed the materials for plane cost $2 in the materials for the boat cost $4. The relationship between the cost of making planes (y) and the number of planes made (x) is D. y = 2x

Let's assume that x is the number of planes and y is the cost of making the planes.

According to the problem, the cost of making one plane is $2, so the cost of making x planes would be:

Cost of making planes = 2x

Therefore, the relationship between the cost of making planes (y) and the number of planes made (x) can be represented as:

y = 2x

Therefore  the correct answer is D) y=2x.

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Answer:

B; C; A; B

Step-by-step explanation:

So, let's go through each of the choices.

So we know that one of the angles is 60 degrees.

I) The triangle is scalene.

This might be true. Since there are 180 degrees in a triangle, and we know 60, that leaves 120 degrees. Anything two combinations of different values that add up to 120 will make the triangle scalene. However, if the two values are the same (e.g. 60;60), they it's not scalene. Thus, this might be true.

II) The other two angles add up to 120.

This must be true. The interior angles sum of a triangle is 180. Since we already know one is 60, then the other two must add up to be 180-60 or 120.

III) The other two angles are obtuse.

This cannot be true. We know that there is only 120 degrees left in the triangle. Obtuse angles are greater than 90 degrees.

Therefore, if we subtract the minimum: 120-90, we will get at most 30 left. This is not enough for another obtuse angle. The most we can have is one obtuse angle and two acute angles.

IV) The triangle is right-angled.

This might be true. Since there are 120 degrees left, the other two degrees may be 90 and 30, given us 30-60-90. This, however, doesn't have to be it. So, this statement may be true.

The angle formed by a secant and tangent line is GSE (Given-Secant-Exterior).

A tangent is a straight line or curve that touches a given curve exactly once but does not cross it. The tangent is a fundamental concept in geometry and calculus that is used to study the behavior of functions at a specific point.

An external angle is the angle formed by a secant and tangent line at a point on a circle. The abbreviation for this angle is EGS (External Angle-Secant-Tangent).

A secant line intersects a circle at two points, whereas a tangent line intersects the circle at only one. The external angle is formed at the point of tangency by the intersection of the secant and tangent lines outside the circle.

Full question.

Which angle is formed by a secant and tangent line?

A) ANG

B) GSE

B) EGS

C) NGL

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Answer:

Total amount on which Mike could earn commission:

Mike can earn amounts on sales over $10,000 so the commission amount is:

= 23,750 - 10,000

= $13,750

Total amount of Mike's compensation:

= 5% * 13,750

= $687.50

Mikes base salary plus commission:

= 500 + 687.50

= $1,187.50

Mike's net pay:

= Gross pay - deductions

= 1,187.50 - 152.75

= $1,034.75

Answer:

I would estimate $30.52

Step-by-step explanation:

If you subtract his original total from the beginning from what he had spent on shoes, you would get the amount of what he has left.

We are 90% confident that the true difference between the mean strengths of the two types lies between 0.015 and 0.105. The data does not show at the 0.05 level that the mean strengths are different, with a p-value of approximately 0.055. Therefore, we fail to reject the null hypothesis that the means are equal.

To find a 90% confidence interval for the difference in the mean strengths of the two types, we can use the two-sample t-test with pooled variance. The formula for the confidence interval is:

\($(\bar{x}_1 - \bar{x}2) \pm t{\alpha/2,\nu} \cdot s_p \cdot \sqrt{\frac{1}{n_1}+\frac{1}{n_2}}$\)

Plugging in the given values, we get:

\(\bar{x}1 = 3.18, \bar{x}2 = 3.24, n_1 = 5, n_2 = 7, s_p = \sqrt{\frac{ (n_1 - 1)s_1^2 + (n_2 - 1)s_2^2 }{ df }} = \sqrt{\frac{ (40.042^2 + 60.048^2) }{ 10 }} = 0.046, t{\alpha/2,\nu} = t{0.05/2,10} = 2.306$\)

Therefore, the 90% confidence interval for the difference between the mean strengths of the two types is:

\($(3.24 - 3.18) \pm 2.306 \cdot 0.046 \cdot \sqrt{\frac{1}{5}+\frac{1}{7}} = 0.06 \pm 0.045$\)

So the interval is (0.015, 0.105).

Thus, we are 90% confident that the true difference between the mean strengths of the two types lies between 0.015 and 0.105.

To test whether the mean strengths are different, we can use a two-tailed hypothesis test with a significance level of 0.05. The null hypothesis is that the means are equal, while the alternative hypothesis is that they are different. We can calculate the t-value as:

\($t = \frac{\bar{x}_1 - \bar{x}_2}{s_p \cdot \sqrt{\frac{1}{n_1}+\frac{1}{n_2}}} = \frac{3.18-3.24}{0.046 \cdot \sqrt{\frac{1}{5}+\frac{1}{7}}} = -2.13$\)

The degrees of freedom are the same as before, \($df = n_1 + n_2 - 2 = 10$\)

The p-value is the probability of getting a t-value at least as extreme as the observed one, assuming the null hypothesis is true. From a t-distribution table, we can find that the p-value for t = -2.13 with df = 10 is approximately 0.055. Since this is greater than the significance level of 0.05, we fail to reject the null hypothesis.

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To determine the solution to the given differential equation with the initial condition, we need to solve the differential equation and substitute the initial condition into the solution.

Start by solving the differential equation: Rewrite the equation as dy/dt = -2 - y.

Separate variables: Move all terms involving y to one side and all terms involving t to the other side. This gives dy/(y+2) = -dt.

Integrate both sides: Integrate the left side with respect to y and the right side with respect to t. This yields ln|y+2| = -t + C, where C is the constant of integration.

Solve for y: Take the exponential of both sides to eliminate the natural logarithm. This gives |y+2| = e^(-t+C).

Apply the initial condition: Substitute y = -3 and t = 0 into the equation. This gives |-3+2| = e^(0+C), which simplifies to 1 = e^C.

Determine the constant of integration: Since e^C is always positive, we can remove the absolute value sign. Therefore, y+2 = e^(-t).

Solve for y: Subtract 2 from both sides to obtain the solution in the form y = -e^(-t) - 2.

Compare the solution with the given options: The solution that matches the differential equation and the initial condition is y = -e^(-t) - 2. Therefore, the correct answer is option B.

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Answer:

the answer is -40 because negative means subtracted from the amount while 40+ means additional or added

24

Add 9 and 3 twice since you need to cover the whole shape.

Answer:

24x1x1*1*1*1

Step-by-step explanation:

that should be the answer as l+b+l+b as perimeter is only the length of the boundary.

you can also say it as 2(l+b) as if you multiply something by to it simply means adding it by it once. l is length 9, b is breadth 3 btw

Answer:

The total would be $320

Step-by-step explanation:

100 dollars saved up

22 dollars times 10 weeks=

220 dollars

220+100=320 dollars

Answer is $320

The total surface area of all three spheres is 3 x 22.78 = 68.34 in².

Given:
A cylindrical container with three spheres so that the spheres are stacked vertically on top of one another, a rectangle that is 2.7 in x 8.1 in, a rectangle that is 5.4 in x 8.1 in, a circle with a diameter of 2.7 in, and a circle with a diameter of 5.4 in.
We have to find the volume of the cylindrical container and the total surface area of all three spheres.

To find the volume of the cylindrical container, we need to know its height and radius.

Since the spheres are stacked vertically on top of one another, their diameters are equal to the radius of the cylindrical container.

Therefore, the diameter of each sphere is 2.7 in.

We know that the formula for the volume of a cylinder is given as;V = πr²h, where r is the radius and h is the height of the cylinder. As we have already found the radius of the cylinder, we need to find its height.

From the given information, we know that the three spheres are stacked vertically, so they occupy a height of 2.7 x 3 = 8.1 in. Therefore, the height of the cylindrical container is also 8.1 in.

Now, we can use the formula for the volume of the cylindrical container; V = πr²hV = π x (2.7/2)² x 8.1V = 49.01 in³

Therefore, the volume of the cylindrical container is 49.01 in³.To find the total surface area of all three spheres, we can use the formula for the surface area of a sphere; A = 4πr², where r is the radius of the sphere.

We know that the diameter of each sphere is 2.7 in, so its radius is 1.35 in. Therefore, the surface area of each sphere is; A = 4πr²A = 4π x 1.35²A = 22.78 in²

Therefore, the total surface area of all three spheres is 3 x 22.78 = 68.34 in².

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Answer:

y=1/2x+2

Step-by-step explanation:

Answer:

812 in²

Step-by-step explanation:

The area (A) is calculated as

A = bh ( b is the base and h the perpendicular height )

Here b = 29 and h = 28 , then

A = 28 × 29 = 812 in²

The equation for the line is:

3y - x = 14

Given the line:

x - 3y = 7

This line can be written as:

y = (1/3)x - 7/3

The slope is 1/3

The y-intercept is -7/3

A line parallel to this has the same slope but different y-intercept, written as:

y = (1/3)x + b

Using the given point (-2, 4), with x = -2 and y = 4, we can obtain the value of b

4 = (1/3)(-2) + b

b = 4 + 2/3

= 14/3

Therefore, the line is:

y = (1/3)x + (14/3)

or

3y - x = 14

Main answer:Long multiplication is a method of multiplying two difficult-to-multiply numbers.

supporting answer:

what is multiple long?

Finding the product is not always this simple. In such cases, the long method of multiplication is used.

body of the answer:

let us understand long multiplication by taking an example

     6.Add the two partial products

final answer: by following above steps we can perform long multiplication

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Long multiplication is a method of multiplying two difficult-to-multiply numbers.

What is multiple long?

Finding the product is not always this simple. In such cases, the long method of multiplication is used.

Let us understand long multiplication by taking an example

1. Write the two numbers one beneath the other in the order of their digits. On top, write the larger number, and on the left, a multiplication sign.

2. Multiply the top number's one digit by the bottom number's one digit.

3. Put a 0 below the one's digit,

4. Multiply the top number's ones digit by the bottom number's tens digit.

5. Multiply the top number's tens digit by the bottom number's tens digit.

6. Add the two partial products

By following the above steps we can perform long multiplication

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Answer:

Greater number is 24 and smaller number is 18.

Step-by-step explanation:

According to the question first case will be x+y=41 by solving it y=41-x and second case will be x=y-5 put the value of y in second case. The answer will come. (hope you will get it)

sawarasenaikimiwa⛓shoujonano?✨böKùWâÿARiçHiñBįCChīńOoSûDàYO

She can buy 16 pens and 16 pencils.

The absolute value of the test t-score is less than the absolute value of the critical t-score, there is not enough evidence to say that the population mean has changed.

population mean assumed to be 2925

sample mean = 2515

standard deviation of sample = 585.

sample size = 15

t-score is indicated because the standard deviation is taken from the sample rather than from the population.

t-score = (x - m) / s

x is the raw score

m is the raw mean of the population

s = standard deviation of sample/sqrt (sample size) = 585/sqrt(15) = 151.6217 rounded to 4 decimal places.

degrees of freedom = 15 minus 1 = 14.

t-score = (2515 - 2925)/151.6217 = -2.7123 rounded to 4 decimal places.

you need to know the confidence level.

at a 95% confidence level, the two-tailed critical t-score with 14 degrees of freedom = plus or minus 1.7613 rounded to 4 decimal places.

since the absolute value of the test t-score is less than the absolute value of the critical t-score, there is not enough evidence to say that the population mean has changed.

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Answer:

The arc length is 185.39 meters.

Step-by-step explanation:

The arc length is calculated by the following expression:

\(\Delta s = \Delta \theta \cdot r\)

Where:

\(r\) - Radius, measured in meters.

\(\Delta \theta\) - Central angle, measured in radians.

If \(r = 36.9\,m\) and \(\Delta \theta =\frac{8}{5}\pi\, rad\), the arc length, measured in meters, is:

\(\Delta s = \frac{8}{5}\pi\cdot (36.9\,m)\)

\(\Delta s = \frac{8}{5}\cdot (3.14)\cdot (36.9\,m)\)

\(\Delta s \approx 185.386\,m\)

\(\Delta s \approx 185.39\,m\)

The arc length is 185.39 meters.

We have to Evaluate any expressions or terms within parentheses first.

To find the value of a numerical or algebraic expression, follow these steps:

1. Simplify any terms within parentheses or brackets.

2. Apply the order of operations (PEMDAS): perform any calculations involving exponents or roots.

3. Perform multiplication and division operations from left to right.

4. Perform addition and subtraction operations from left to right.

5. For algebraic expressions, substitute the given values of the variables into the expression and then follow steps 1-4 to calculate the value.

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Answer:

1) 126 ounces

2) 18 pounds and 7 ounces

3)6 tons

Step-by-step explanation:

Answer:

10 students have pets

Step-by-step explanation:

first u do 5/9x18/1 and thats 90/9 then u do 90 divided by 9 and that's 10 then 9 divided by 9 is 1 so u put those together and its 10/1