Question

If p varies directly with q, and p = 10 when q = 2, what is the value of p when q = 20?

A.
p = 1

B.
p = 40

C.
p = 100

D.
p = 28

Answer 1

@igreen @answermyquestions @lordhelix8th @BloomLocke367

Answer 2

you can write a proportion.

Answer 3

\(\Huge\frac{10}{2}=\frac{?}{20}\)

Answer 4

yea we need the poportion

Answer 5

direct variation, has the equation: \(\large\color{black}{ \displaystyle y=\color{orangered}{\rm k}x }\)
In this case, though, your variables are \(p\) and \(q\).

\(\large\color{black}{ \displaystyle p=\color{orangered}{\rm k}q }\)

you are given that \(p=10\) when \(q=2\) AND you can use this information to solve for \(\large\color{black}{ \displaystyle \color{orangered}{\rm k} }\).

Answer 6

that works too ^^

Answer 7

your is definitely shorter:)

Answer 8

10 / 20 = 0.5

Answer 9

cross multiply to solve for the question mark (which you can denote as x)

Answer 10

i used bloomlockes

Answer 11

i figured:)

Answer 12

you have to multiply \(\Huge 10\times 20\) then divide that by \(\Huge 2\)

Answer 13

100

Answer 14

\(\Huge\color{lime}{Correct~\checkmark}\)

Answer 15

This glitch is so annoying i have to leave or reset the page everytime i post something

Answer 16

Make a post about it in OpenStudy Feedback