Question

Solve for x in the proportion 3x/3x-36 = -1/x

Answer 1

Ok...u can cross multiply to solve this problem
so... it will look like 3x(x) = -1(3x-36)
then, it will be 3x^2 = -3x + 36
and now, its 3x^2 + 3x -36 = 0
Its basically a factoring problem from here...can you solve it from here?

Answer 2

uhhh, possibly..

Answer 3

ok...what would be your first step?

Answer 4

take out a 3?

Answer 5

sweet! do it!:)

Answer 6

okay 3(x^2+x-12)

Answer 7

right! 3(x^2 + x - 12) = 0
then, (x^2 + x - 12) = 0/3 = 0
now, can you factor (x^2 + x - 12) = 0

Answer 8

um, well what would i do?

Answer 9

ok...i'll just do it!
you can use simple factoring to see that (x^2 + x - 12) factors into
(x + 4) (x - 3) = 0
then, you have (x + 4) = 0
x = -4
and (x - 3) = 0
x = 3
These are your values for x!

Answer 10

thank you! :)

Answer 11

my pleasure!

Answer 12

I GOT A HUNDRED PERCENT ON MY ASSIGNMENT

Answer 13

oops sry wrong post