Question

need help quick!

triangle LMN is similar to triangle RST. What is the length of side LM?
http://prntscr.com/91qlzl

Answer 1

i think it's 6

Answer 2

How did you figure it out?

Answer 3

if not 3.75

Answer 4

Well I need to show a step-by-step of my answer.

Answer 5

\[12+3=15\] and \[3+3=6\] so it would be 6 the other one \[12\div4=3\] so \[15\div4=3.75\]

Answer 6

the ratio between sides is 4.

thus the LM=15/4=3.75

Answer 7

How did you find that ratio, @AlexandervonHumboldt2

Answer 8

sides are similar, thus pick correspoonding pair of sides TR and NL : 12/3=4