Area of a circle = pi x r^2
Area of circle = 150,000/ 1578 = 95.06 square miles
95.06 = 3.14 x r ^2
Divide both sides by 3.14
R^2 = 30.27
Find the square root:
R = sqrt(30.27)
R = 5.5
The radius is c) 5.5 miles
The first question is a and the second is a
Answer:
Step-by-step explanation:
i can help
Step 1
-(x + 8) = -x Simplify
Step 2
-(x + 8) = -x Simplify the sides of the equation
-x-8=-x
Step 3
-x-8=-x Add x to the sides
-8=0
Step 4
-8=0 Add 8 to the sides
0=8
Answer
No solution
Hope this helps
Answer:
Step 3 they took the square root incorrectly
Step-by-step explanation:
5 ( x-2)^2 +6 = 86
Subtract 6 from each side
5 ( x-2)^2 +6 -6= 86-6
5 ( x-2)^2 = 80
Divide each side by 5
5 ( x-2)^2 /5 = 80/5
(x-2)^2 = 16
Take the square root of each side
sqrt((x-2)^2) = ±sqrt(16)
x-2 = ±4
Step-by-step explanation:
c
