Answer:
3/2
Step-by-step explanation:
Divide second triangle measurements by first to see what was used to multiply
6/4 = 3/2
7.5/5 = 3/2
12/8 = 3/2
A
I hope it helps you ❤️❤️❤️❤️
3/4
21/28=3/4
z=10 because 3x5=15 and you do the same to the other number.