3 years ago

I need help with this problem.

1 answer:

adoni [48]3 years ago

7 0

#4
(5/4)*5= (25/4)=6 1/4 miles per hr

#5
(40/$62) = (x/$128.65)
x = 83

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Alisiya [41]

Answer: b.

Step-by-step explanation:

Based on the information given, you can write the following expression:

$y=\frac{k}{x^2}$

Where k is the the constant of variation

If y=4/63 when x=3, then you can substitute these values into the expression and solve for k:

$\frac{4}{63}=\frac{k}{3^2}\\k=9*\frac{4}{63}\\k=\frac{4}{7}$

Substitute k into the expression. Then the equation is:

$y=\frac{4}{7x^{2}}$

Substitute x=5 into the equation. Then, y is:

$y=\frac{4}{7(5)^{2}}=\frac{4}{175}}$

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Answer:

<em>good luck, i hope this helps :)</em>

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