Question

y varies jointly with p and q. When p = 5 and q = 2, y = 80. Find y when p = 4 and q = 5.

Answer 1

i think this means \(y=pq\)

Answer 2

Yes i just dont where to go to come to a solution?

Answer 3

no, it means \(y=kpq\) and when \(y=80, p=5,q=2\) you have
\[80=10k\] and so \(k=8\)

Answer 4

this tells you
\[y=8pq\]

Answer 5

so y=120

Answer 6

then when \(p=4, q=5\) you get
\[y=8\times 4\times 5\]

Answer 7

i get \(y=160\) rather than \(120\)

Answer 8

Thankyou!!!!

Answer 9

yw

Answer 10

you got a lot of homework!

Answer 11

yes! I take florida virtual school and im having a hard time with a lot of the questions on my assignment but its too late to call my teacher.

Answer 12

so youre helping me a lot! :)

Answer 13

apparently you can call openstudy, so you should do ok