Question

Find the length x .

Answer 1

Aren't they proportional?

Answer 2

They have the same angles, so 4.5/7.5 = x/5. So x=(4.5)(5)/(7.5).

Answer 3

Are the two triangles proportional? if so, then you can use ratios: 7.5 : 5 = 4.5 : x. You can turn this into a fraction. 7.5/5 is the same as 3/2, so you have\[\frac{ 3 }{ 2 }=\frac{ 4.5 }{ x }\] . Then you can use cross products. 3x = 9, so finally, x = 3.

Answer 4

what doe proportional mean?

Answer 5

www.mathsisfun.com/definitions/proportional.html

Answer 6

lol, link failed. Copy paste that into your address bar

Answer 7

thank you!!!

Answer 8

You're welcome ☺

Answer 9

is the answer 3?