Question

The triangles are similar.

Answer 1

Answer:

x=12

Step-by-step explanation:

because they are proportional, the side should be 100 so you just solve from that equation for 100.

Answer 2

Answer:

x = 12

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

$\frac{6x+28}{25}$ = $\frac{28}{7}$ = 4

Multiply both sides by 25

6x + 28 = 100 ( subtract 28 from both sides )

6x = 72 ( divide both sides by 6 )

x = 12