Answer:
12
Step-by-step explanation:
16^2+b^2=20^2
256+b^2=400
b^2=144
b=sqrt144
b=12
Hope this helps!1
Answer:c
You divide by the dividend and multiple my ding dong in your face
y = x2 + 3x + 3
y = x2 + x + 2
y=y
x2+ 3x + 3 =x2 + x+ 2
x2 - x2 + 3x - x = 2 - 3
2x = -1
x = -1/2
