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mestny [16]
3 years ago
10

If y varies directly as x, find the constant of variation if y= 32 when x= 8

Mathematics
1 answer:
elixir [45]3 years ago
4 0

Answer:

K = 4

Step-by-step explanation:

If y varies directly as x

y = k x

Divide both sides by by x

K = y/x

When y = 32 and

x = 8

K = 32/8

K = 4

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Answer:

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<u>Given:</u>

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**Use the <em>z</em>-table for critical values.

Compute the sample size (<em>n</em>) as follows:

MOE= z_{\alpha /2}\frac{\sigma}{\sqrt{n}}\\3=1.96\times \frac{11}{\sqrt{n}}\\n=(\frac{1.96\times11}{3} )^{2}\\=51.65\\\approx52

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2 years ago
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