In this question, 10 people average running distance is 2.7miles. Then the sum of their running distance would be: 10 people * 2.7 miles/people= 27 miles.
The group then divided into 2, 4 people with 3 miles average and 6 people with unknown average. Since the people are same like the 10 people group, their total running distance would be the same. The calculation would be:
total distance = group1 * average1 + group2 * average2
27 miles= 4 people * 3 miles/people + 6 people* average2
6 people * average2 = 27 miles -12 miles = 15 miles
average2= 15 miles/6people= 2.5 miles/people
Answer:
![5x\leq30](https://tex.z-dn.net/?f=5x%5Cleq30)
Step-by-step explanation:
Let
x -----> the number of ice cream
we know that
![5x\leq30](https://tex.z-dn.net/?f=5x%5Cleq30)
Solve for x
Divide by 5 both sides
![x\leq30/5](https://tex.z-dn.net/?f=x%5Cleq30%2F5)
![x\leq 6\ ice\ cream](https://tex.z-dn.net/?f=x%5Cleq%206%5C%20ice%5C%20cream)
therefore
The maximum number of ice cream is 6
Answer:
A
Step-by-step explanation:
=2x+7-x^2+2
=-x^2+2x+9
Answer:
C
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
A hexagon has 6 sides, so n = 6
sum = 180° × (6 - 2) = 180° × 4 = 720° → C