Answer:
D. -2+4i
Step-by-step explanation:
just combine like terms :)
Answer:
55
Step-by-step explanation:
hope it helps you.....
First Factor.


Find inverse by solving for 'x'
Answer:
diameter =7 cm
Step-by-step explanation:
circum=2pi×r

2×pi×r=22
2×22÷7×r=22
r=22×7÷44
r=7÷2
r=3.5
d=2×r=2×3.5=7