Answer:
x = -16
Step-by-step explanation:

Hope this helps!
Answer:
The arc length of the semicircle is half the circumference of the full circle
Answer:
30y+14
Step-by-step explanation:
add the values of all the sides together: (5y+4) + (5y+4) + (10y+3) + (10y+3) = (5y + 5y + 10y + 10y) + (4 + 4 + 3 + 3)= 30y + 14
All of them have the same answer of -8 except the last one.