What is the length of AC

|AC| = 144

Step-by-step explanation:

The larger triangle (on the left) and the smaller one (on the right) are similar.

Therefore the following equation of ratios is correct:

  x               7

=

156 - x       84

Then 84x = 7(156) - 7x, or

         91x = 1092, or x = 12

Then the length of AC is 156 - x, or 144  

only 10/60 isn't equivalent

hope this : )

answer is 60/15 use pemdas and simplify the top and bottom. then divde by 5 and

final answer 12/3

final simplified 4/1