Answer:
probability that you and your 3 friends will be selected.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this question, the order in which the volunteers are chosen is not important, which means that the combinations formula is used to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.

Desired outcomes:
You and the 3 friends(4 people), from a set of 4. So

Total outcomes:
20 people from a set of 20. So

Probability:

probability that you and your 3 friends will be selected.
Answer:
250+20 = <u><em>270 cents or $2.70</em></u>
Step-by-step explanation:
Each quarter is 25 cents
Each dime is 10 cents
<h2><em><u>
GIVEME BRAINLIEST</u></em></h2>
Answer:
C
Step-by-step explanation:
Answer:
Step-by-step explanation:
The volume of a cone is

Filling in what we have:
and simplifying a bit:

Multiply both sides by 3 to get:

Divide both sides by 12.56 to get:
and take the square root of both sides to find the radius:
r = 5
If the radius is 5 and the radius by definition is half the diameter, then the diameter is 10 inches.