Answer:
i need more info
Step-by-step explanation:
The angles of a triangle all add up to 180º.
You need to set up and solve the equation:
84+48+3h = 180
One thousand five hundred
y = 1/2x
x - 2y = -4
x = -4 + 2y
x + 4 = 2y
2y = x + 4
y = 1/2x + 2