HELP FAST PLS

1/8

Step-by-step explanation:

Basically, AB and A'B' are proportional. And in order to figure out the scale factor or k, we have to divide A'B' by AB (order of division matters) 1.2/9.6 to figure out the proportion. We get 1/8, and that is our scale factor.

Hope this was helpful

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

the answer is 13 cm