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2 years ago

Pls help I will give you 11 coins

Mathematics

1 answer:

maks197457 [2]2 years ago

5 0

Answer:

Step-by-step explanation:

range is the set of y values

the graph goes close to y=2

the range is D.

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You are trying to estimate the average amount a family spends on food during a year. In the past the standard deviation of the a

svetoff [14.1K]

Answer:

$n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663$

So the answer for this case would be n=2663 rounded up to the nearest integer

Step-by-step explanation:

We have the following info:

$ME = 50$ margin of error desired

$\sigma = 1000$ the standard deviation for this case

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =50 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance is $\alpha=0.01$ . And for this case would be $z_{\alpha/2}=2.58$ , replacing into formula (b) we got:

$n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663$

So the answer for this case would be n=2663 rounded up to the nearest integer

5 0

2 years ago

Help on 2 pleeeeeaaassseee

Anastasy [175]

10^9 (Ten to the power of nine)

5 0

2 years ago

A scaled factor of 2 is used to increase the triangle. What is the new area?

lesya [120]

Answer:b

Step-by-step explanation:b

8 0

3 years ago

Cameron bought a used car for $4,500. He made a down payment of $1,200 and agreed to pay the remaining balance in monthly paymen

svet-max [94.6K]

Answer:

$4500 = 1200 + 300m$

Step-by-step explanation:

Given

$Total = 4500$

$Base\ Amount = 1200$

$Payment = 300$ monthly

Required

Write an expression to determine the number of months

The total can be expressed using:

$Total = Base\ Amount +Payment * Number\ of\ months$

Substitute value for each term

$4500 = 1200 + 300 * m$

$4500 = 1200 + 300m$

Hence:

Option F answers the question

8 0

3 years ago

3. Find the midpoint between the following points. (-2,-5) and (-3,1)

Vadim26 [7]

Answer:

Step-by-step explanation:

(x₁, y₁) = (-2 , -5) & (x₂ , y₂) = (-3 , 1)

Midpoint = $(\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2})$

$=(\frac{-2 + [-3]}{2} ,\frac{-5 + 1}{2})\\\\\\=(\frac{-5}{2} , \frac{-4}{2})\\\\=(-2.5, -2)$

7 0

3 years ago