Answer:
40
Step-by-step explanation:
Let the number be y
-1/2 × y = -20
y = -20 ÷ -1/2
y = 20 × 2
y = 40
Answer:
The third option: x=
Step-by-step explanation:
Arc length formula=
Arc length =
=
It’s D it’s substitution just not simplified
D because you can’t put a negative over a exponent