Mathematics: If p and q vary inversely and p is 21 when q is 23, determine q when p is equal to 7? Inverse variation

I believe your answer is $11.45 a pound, because you are taking the total (91.60) and you re going to divide that by 8. 91.60/8=11.45Hope this helps! ...

If p and q vary inversely and p is 21 when q - id212313391230, billy583887

Ответ:

lorie76

20.06.2021

Mathematics

q = 69

Step-by-step explanation:

Given

Variation:

$p\ \alpha\ \frac{1}{q}$

p = 21; q = 23

Required

Find q, when p =7

We have:

$p\ \alpha\ \frac{1}{q}$

Express as equation

$p = \frac{k}{q}$

Make k the subject

k = pq

When: p = 21; q = 23

k = 21 * 23

k = 483

So, we have: when p =7

$p = \frac{k}{q}$

$7 = \frac{483}{q}$

Make q the subject

$q = \frac{483}{7}$

q = 69

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If p and q vary inversely and p is 21 when q is 23, determine q when p is equal to 7? Inverse variation

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