Question

the proportion is blank over 4 = 21 over 12 and i have to solve it.

Answer 1

so you have blank/4=21/12
what do you have to take 4 times to get 12, answer 3, or 12/3 = 4
so 21/3 = 7
the blank is 7

Answer 2

wow thank you

Answer 3

6 over 10 equals 9 over y i need to solve it

Answer 4

wer're going to do this one a little different
cross multiply: 6 * y = 10 * 9
6*y = 90
divide both sides by 6, so 90/6 = 15

Answer 5

come again?

Answer 6

im not good at math

Answer 7

you have 6 over 10 = 9 over something or 6/10 = 9/box
take 9/6 = 3/2 reduced
then take 10 *(3/2) = (10*3)/2=30/2=15

Answer 8

so the blank is 15?

Answer 9

you're right

Answer 10

oh okay