Answer:
11
Step-by-step explanation:
I think it is D but I am not sure
8cm
Area of a triangle equals bh/2
If you plug in the data, you get
10=*
10=
40=5h
h=8
24
Check attachment for explanation... hope it helps :)
28 = 24x -7y
-24x + 28 = -7y
y = 24/7x + 4