Answer:
x = 4
Step-by-step explanation:
DE is similar to XY and DF is similar to XZ
We can make proportions
DE DF
------------ = ---------------
XY XZ
5 11
--------- = -------------
10 5x+2
Using cross products
5 (5x+2) = 10*11
Distribute the 5
25x+10 = 110
Subtract 10 from each side
25x+10-10 = 110-10
25x = 100
Divide by 25
25x/25 = 100/25
x = 4
