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Aliun [14]
3 years ago
6

Colby has 16 jar of spices.He wants to arrange them in arrays. What arrays could be used to arrange them?

Mathematics
1 answer:
ohaa [14]3 years ago
4 0

Answer:

8 or 4

Step-by-step explanation:

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How many unique triangles can be drawn with given side lengths of 8 inches,10.3 inches,and 13 inches?​
goldfiish [28.3K]

Answer:

3 unique triangles

Step-by-step explanation:

If you use the Triangle Inequality Theorem, it states that the sum of 2 sides of the triangle would equal more than the third side. So three triangles can be made with those side lengths.

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Find the area of the shape below.<br> 16 cm<br> 7 cm<br> 7 cm<br> 20 cm
Ira Lisetskai [31]

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ar of quadilateral

=16×7×7×20

=12080cmsq

4 0
3 years ago
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PLEASE HELP!!!!!!!!​
marshall27 [118]

Answer:

D

Step-by-step explanation:

I took the quiz :)

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3 years ago
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Artemon [7]

Answer:

D

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3 0
3 years ago
It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken if the desir
Ksju [112]

Answer:

We need a sample size of at least 75.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, we find the margin of error M as such

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

In which \sigma is the standard deviation of the population and n is the size of the sample.

The standard deviation is the square root of the variance. So:

\sigma = \sqrt{484} = 22

With a .95 probability, the sample size that needs to be taken if the desired margin of error is 5 or less is

We need a sample size of at least n, in which n is found when M = 5. So

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

5 = 1.96*\frac{22}{\sqrt{n}}

5\sqrt{n} = 43.12

\sqrt{n} = \frac{43.12}{5}

\sqrt{n} = 8.624

(\sqrt{n})^{2} = (8.624)^{2}

n = 74.4

We need a sample size of at least 75.

6 0
3 years ago
Read 2 more answers
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