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3 years ago

11

On a statistics test the class mean was 63 and the standard deviation was 7 and for the biology test the mean was 23 and has a s

tandard deviation of 3.9. Mark scored a 38 on the biology exam what was his z score. Round two decimal places

1 answer:

balandron [24]3 years ago

6 0

Answer:

I don't know this answer

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Please simplify this please it’s due really soon!

iren2701 [21]

Step-by-step explanation:

$\frac{ {13}^{6} \div {13}^{8} \times {13}^{ - 4} }{ {13}^{ - 2} }$

You need to remember the properties of exponents: multiplication adds the exponents, division subtracts the exponents.

If you multiply two powers with the same base, the result will be the base to the sum of the powers.

If you divide two powers with the same base, the result will be the base to the difference of the powers.

In your case you will this:

${13}^{6 - 8 + ( - 4) - ( - 2)}$

That is:

${13}^{ - 4}$

Or:

$\frac{1}{ {13}^{4} }$

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4 years ago

A concrete pillar has the shape of a cylinder. It has a radius of 6 meters and a height of 4 meters. If concrete costs $82 per c

wel

Answer: $37077.12

Step-by-step explanation:

Please see the attachment below

7 0

4 years ago

Read 2 more answers

Lelu [443]

Answer:

the correct answer is A. Because it shows the equal qualifient of the answer

4 0

4 years ago

Whats 4(d+2)-2d=3(2+d)

Dmitry [639]

Simplify:

$4(d + 2) - 2d = 3(2 + d)\\4d + 8 - 2d = 6 + 3d\\d + 8 - 2d = 6\\-d + 8 = 6\\-d = -2\\d = 2$

d is equal to 2.

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4 years ago

What is the percent of 3/4

Dennis_Churaev [7]

Answer:

75%

Step-by-step explanation:

8 0

3 years ago