X is 90°
A triangles angles add up to 180° so
180 - 47 - 90 = y
180 - 137 = y
y = 43°
It's C first find 3/5 of the horoziotal
if there's 1 boy to every 4 girls, there's going to be 5 boys for every 20 girls
1. X=-2 x=1 x=5/2
2. X=0 x=-1/5 x=4/3 x=1
3.x>-2
4.X>_8
