Question

URGENT!

Given that triangle ABC is similar to Triangle DEF, what is x?

A. X = 7

B. X = 63

C. X = 9/7

D. X = 7/9

Answer 1

The answer is A. X=7

Answer 2

Answer:

x = 7

Step-by-step explanation:

Since triangle ABC is similar to Triangle DEF,

BC = 21 cm

EF = 9 cm

so, the proportion is 9:21

9 : 21

1 : 21/9

3 : 21/9 (3)

3 : 21/3

3 : 7