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2 years ago

Evalute the expression 36 + 5 to the power of 3

Mathematics

2 answers:

Paul [167]2 years ago

5 0

68921 im not sure if this is right but please let me know thanks

user100 [1]2 years ago

3 0

Answer:

Step-by-step explanation:

lol

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Plz help, so confused, will report, just need these answers and explainations, correctly, thanks:)

Bad White [126]

Answer: 35

Step-by-step explanation:

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2 years ago

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Which is an example of a high-risk investment?

rewona [7]

stock in a start-up company

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3 years ago

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The travel-to-work time for residents in Ventura County is unknown. Assume the population variance is 39. How large should a sam

katen-ka-za [31]

Answer:

A sample size of 128 is needed.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.93}{2} = 0.035$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.035 = 0.965$ , so $z = 1.81$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population(square root of the variance) and n is the size of the sample.

How large should a sample be if the margin of error is 1 minute for a 93% confidence interval

We need a sample size of n, which is found when $M = 1$ . We have that $\sigma = \sqrt{39}$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$1 = 1.81*\frac{\sqrt{39}}{\sqrt{n}}$

$\sqrt{n} = 1.81\sqrt{39}$

$(\sqrt{n})^2 = (1.81\sqrt{39})^2$

$n = 127.8$

Rounding up

A sample size of 128 is needed.

7 0

2 years ago

Determine the distance between the following pair of points (-2,1) and (-5,-1)

Alexeev081 [22]

The distance would be 3 units because the difference between 2 and 5 is 3.

7 0

3 years ago

Write an equation for the line graphed below: y=??

Zepler [3.9K]

Answer: y=-2x-1

Step-by-step explanation:

First let's find the slope by using the formula $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

$\frac{-3--1}{1-0} \\\frac{-2}{1} \\-2$

The equation for slope intercept form is y=mx+b where m is the slope and b is the y-intercept

The y-intercept is -1 giving us the equation

y=-2x-1

4 0

2 years ago