The following triangles are similar. Which of the proportions could be used to solve for x:
21
35
X
15
30
12
T
15
A
35
21
15
T
B
35
21
<
C
D
30
15
35
The proportions that could be used to solve for x are:
A:
21/35 = X/15
B:
35/21 = X/15