Does anyone know the answer to this? and the steps to how to do this?

Hello from MrBillDoesMath!

  Using the diagram provided the question can not be answered.

Discussion:

The 3 angles of a triangle add up to 180. From the diagram

73 + ( 6x + 4) + ( 8y -7)  = 180

This equation has two variables, x and y, and we can't solve it as such. BUT if the third angle was intended to be (8x -7),  an assumption totally, then

73 + ( 6x + 4 ) + ( 8x -7) = 180  or

73 + (6x + 8x) + (4 -7) = 180 or

73 + 14x  -3 = 180 or

14x + 70 = 180 or

14x = 180 -70 = 110

x = 110/14 = 55/7

Thank you,

MrB

7 is the median   7.875 is the mean

step-by-step explanation:

3,4,5,6,8,11,13,13