1.5ft to inches = 0.125 inches
14×0.125×7= 12.25 inches cubed
You just have to get x and y by themselves so solve and plug in
-13h + -38 = 27
You have to have all the h alone and in the same side.
-13h=65
You have to divide -13h by -13 to find one h
h = -5
Since the triangle is equilateral (you can tell by the tick on each side), all angles have the same measure as well.
The angles of a triangle sum up to 180 degress, so three equal angles must measure 60 degrees each.
So, in particular, we have
7x + 4 = 60 7x = 56 x = 8
