Answer:

Step-by-step explanation:
Area of a circle = 
However, the question wants to use 3.14 instead of
.
Since the radius is given, which is 18 feet, we can plug and chug.

However, the question wants us to round it to the nearest tenth.
Therefore, the answer is 
Answer:
C
Step-by-step explanation:
We want to solve the equation:

Using the quadratic formula. The quadratic formula is given by:

In this case, <em>a</em> = 1, <em>b</em> = 2, and <em>c</em> = 7.
Substitute:

Evaluate:

Simplify the square root:

Hence:

Simplify:

Hence, our solutions are:

Our answer is C.
First find the unit rate. Do 17.5/2.5 and you get 7. Next just multiply that by 10 and voila. It takes her 70 minutes to run the whole race.
Answer:
x = 6
Step-by-step explanation:
3 / 6 = 18 / 36
3 × 6 = 18
6 x 6 = 36
Answer:
31.5 hours
Step-by-step explanation:
2 hours for every 3 hours English so 21 divided by 2 =10.5 so 3 times 10.5 = 31.5 hours