Step-by-step explanation:
diameter = 3ft
radius = 3/2 ft
perimeter of semicircle= πr = π (3/2) = 3.14×3/2
= 4.71 ft
<span>7 billion is 10 times greater than 700 million.
7,000,000,000/700,000,000=10</span>
3 fourths of an hour is : (3/4)
(3/4)*4=3 hours
hope this helps!
NB- I used the symbol to represent that the 2 means squared. I hope this helps
A). F(x)=3x^2
F(x)=3(-3)^2
F(x)=3(9)
F(x)=27
B). F(x)=3x^2
F(x)=3(0)^2
F(x)=3(0)
F(x)=0
C). F(x)=3x^2
F(x)=3(2)^2
F(x)=3(4)
F(x)=12
D). F(x)=3x^2
F(x)=3(5)^2
F(x)=3(25)
F(x)=75
