3 years ago

PLS HELP ME FINISH THIS THANKS

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

8 0

Pay attention to the even numbers

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Y=x2+6x+2 in vertex form

ahrayia [7]

I hope this helps you

8 0

3 years ago

How many weeks of data must be randomly sampled to estimate the mean weekly sales of a new line of athletic footwear? We want 98

Irina18 [472]

Answer:

$n=(\frac{2.33(1400)}{400})^2 =66.50 \approx 67$

So the answer for this case would be n=67 rounded up

Step-by-step explanation:

Information given

$\bar X$ represent the sample mean for the sample

$\mu$ population mean

$\sigma=1400$ represent the sample standard deviation

n represent the sample size

Solution to the problem

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 =400 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 98% of confidence interval now can be founded using the normal distribution. And the critical value would be $z_{\alpha/2}=2.33$ , replacing into formula (b) we got:

$n=(\frac{2.33(1400)}{400})^2 =66.50 \approx 67$

So the answer for this case would be n=67 rounded up

8 0

3 years ago

What is the slope of the line that passes through the points (2, 3) <br> and (–2, 6)?

saw5 [17]

Slope = (6 - 3)/(-2-2)
= 3/-4
= -3/4

answer
slope = -3/4

4 0

3 years ago

Read 2 more answers

10 x 10 +100 – 1000 = X

boyakko [2]

Answer:-800

Step-by-step explanation: 10 times 10 is 100 plus another 100 is 200-1000 is -800 which is x

4 0

3 years ago

Read 2 more answers

PLEASE HELP ME THANKS IF YOU DO HAVE A NICE DAY

notsponge [240]

Answer:

Step-by-step explanation:

Blank 1: 584,000

Blank 2: 1,369,600

I think you just multiply by the number of years.

6 0

2 years ago