Answer:

Step-by-step explanation:
The formula of an area of a circle:

r - radius
Circle A:
radius = 4 ft. Substitute:

Circle B:
radius = 9 ft. Substitute:

The ratio:

B. 1/5
When turned into a decimal, 1/5 is 0.2 which is a decimal that terminates.
First, you need to find the total amount of games played by adding 11 and 9

Now you have to divide 11 by 20. If you wanted to find the percent of games lost, you would divide 9 by 20.

answer: 55%
Step 1: Simplify both sides of the equation.
x−7=15+3x
x+−7=15+3x
x−7=3x+15
Step 2: Subtract 3x from both sides.
x−7−3x=3x+15−3x
−2x−7=15
Step 3: Add 7 to both sides.
−2x−7+7=15+7
−2x=22
Step 4: Divide both sides by -2.
−2x/−2=22/−2
x=−11