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2 years ago

Solve x-3/6 divided by 3-x/2 Please show work

Mathematics

1 answer:

Nataly_w [17]2 years ago

4 0

$\cfrac{x-3}{6}: \cfrac{3-x}{2} = -\cfrac{3-x}{6}*\cfrac{2}{3-x} =- \cfrac{2}{6}=- \cfrac{1}{3}$

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How large a sample should be selected to provide a 95% confidence interval with a margin of error of 6? Assume that the populati

marshall27 [118]

Using the z-distribution, it is found that a sample of 171 should be selected.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

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

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

For this problem, the parameters are:

$z = 1.96, \sigma = 40, M = 6$

Hence we solve for n to find the needed sample size.

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

$6 = 1.96\frac{40}{\sqrt{n}}$

$6\sqrt{n} = 40 \times 1.96$

$\sqrt{n} = \frac{40 \times 1.96}{6}$

$(\sqrt{n})^2 = \left(\frac{40 \times 1.96}{6}\right)^2$

n = 170.7.

Rounding up, a sample of 171 should be selected.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

4 0

1 year ago

Danny buys 4 pizzas and some pretzels for his baseball team. The cost of each pizza is $8.99, and the cost of each pretzel is $0

Luba_88 [7]

Answer:

Step-by-step explanation: The answer to your question is 15 pretzels.To figure this out, you first multiply 8.99 by 4 since he did buy 4 pizzas and each pizza is 8.99. Then once you do that, you should come up with 35.96. Then subtract 50.81 from 35.96,which should give you 14.85. Then just divide 14.85 by 0.99 to figure out the amount of pretzels he bought.It should give you 15.Hope this helps!!!!

Please give brainliest!!!☺

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3 years ago

Read 2 more answers

If three numbers have a product of zero, what do you know about at least one of the numbers?

lisabon 2012 [21]

Answer:

Step-by-step explanation:

the product is three numbers multiplied together. any number times 0 is 0, so one of the numbers has to be 0

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3 years ago

There are many three digit numbers that are each divisible by 7 and also 8 without a remainder.What is the largest of these thre

Semenov [28]

The largest number is 952. I'll tell you why...

7*8=56

------------

56*18=7*8*18=7*8*3*6=1008 (4 digits)

56*17=7*8*17=952 (3 digits)

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2 years ago

Question:4x²-9 <br>answer:

statuscvo [17]

Step-by-step explanation:

4x^2-9

=(2x)^2 -3^2

=(2x+3) (2x-3)

Hope this helps you.

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2 years ago