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3 years ago

Does anyone know how to do this? i’m suffering

Mathematics

1 answer:

Rina8888 [55]3 years ago

3 0

Answer:

the answer is 5.

Step-by-step explanation:

i did the math and i did it 15 different times and i only got 5 every time

hope i helped...

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Write four decimals with the digit 4 in a different place in each-ones, tenths,hundredths, and thousandths. Then write s stateme

Rudiy27

We have to write number 4 in different places in ones, tenths,hundredths, and thousandths.

So, numbers are = 4.000 , 0.004 , 0.040 , 0.400

The statements can be like =

In 4.000 , the 4 is in ones place.

In 0.400, the 4 is at tenth place.

In 0.040 , the 4 is at hundredth place.

In 0.004 , the 4 is at thousandth place.

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3 years ago

What are the coordinates of the x-intercept and y-intercept of the line -y-2x=4

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3 years ago

Find the value of x Please help

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80/60 = (80 + 2x)/(60 + 27)
80/60 = (80 + 2x)/87
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3 years ago

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Calculate the number of ways to arrange 9 books of different tittles on a book

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Answer:

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You need to compute the a 90% confidence interval for the population mean. How large a sample should you draw to ensure that the

RSB [31]

Answer:

The sample size required is 102.

Step-by-step explanation:

The (1 - α)% confidence interval for population mean μ is:

$CI=\bar x\pm z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}$

The margin of error for this interval is:

$MOE= z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}$

Given:

σ = 9.2

(1 - α)% = 90%

MOE = 1.5

The critical value of z for 90% confidence level is:

$z_{0.10/2}=1.645$

*Use a z-table.

Compute the value of n as follows:

$MOE= z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}$

$n=[\frac{z_{\alpha/2}\times \sigma}{MOE}]^{2}$

$=[\frac{1.645\times 9.2}{1.5}]^{2}\\=101.795\\\approx102$

Thus, the sample size required is 102.

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3 years ago