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aev [14]
3 years ago
7

If y varies inversely as x, and x= 8 when y = 4, find y when x = 2

Mathematics
2 answers:
VMariaS [17]3 years ago
8 0

Answer:

y = 16

Step-by-step explanation:

Use the inverse variation equation, y = \frac{k}{x}

Plug in 8 as x and 4 as y, then solve for k

y = \frac{k}{x}

4 = \frac{k}{8}

32 = k

So, k is 32.

The equation is y = \frac{32}{x}

Plug in 2 as x and solve for y

y = \frac{32}{x}

y = \frac{32}{2}

y = 16

So, when x = 2, y = 16

VladimirAG [237]3 years ago
4 0

Answer:

I'm pretty sure that it is 8 but I'm not entirely sure

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boyakko [2]
Answer: We should add the constant 81 to the expression to have a perfect square trinomial.

The perfect square trinomial that would be formed would result from (x + 9)^2.

We can use foil to prove it.

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A sample of 32 observations is taken from an infinite population. The sampling distribution of a.is approximately normal because
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Answer:

a.is approximately normal because of the central limit theorem.

Step-by-step explanation:

Central Limit Theorem

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For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question:

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7 0
3 years ago
Write the sentence as an inequality.
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Step-by-step explanation:

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Hope this helps!

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