Answer:
25.13
Step-by-step explanation:
C=2πr=2·π·4≈25.13274cm
Answer:
x = -7 ±3i
Step-by-step explanation:
(x+7)^2+9=0
Subtract 9 from each side
(x+7)^2+9-9=0-9
(x+7)^2=-9
Take the square root of each side
sqrt((x+7)^2) = ±sqrt(-9)
We know sqrt(ab) = sqrt(a) sqrt(b)
x+7 = ±sqrt(-1) sqrt(9)
We know that sqrt(-1) is the imaginary number i
x+7 = ±i *3
x+7 =±3i
Subtract 7 from each side
x+7-7 = -7 ±3i
x = -7 ±3i
So area is base x height:
5(x+2)=20
5x+10=20
5x=10
x=2
its A
Answer:Sub C = 75 in to your equation.: C=20
F= (9/5)X75 + 32
Step-by-step explanation:
