Answer:

Step-by-step explanation:
Given

Required
The sample mean
This is calculated using:

So, we have:



The answer is D. M=7
===================
explanation
7+3(7)=28
7+21=28
28=28
making the D.M=7 as true.
Answer: 6 meters
Step-by-step explanation:
Perimeter is the distance around the track.
There are 6 lanes in this track and each of those lanes are 1 meter in width.
The perimeter must be the total of the widths of all these lanes added together:
= 6 lanes * 1
= 6 meters
325/15=800/x. Cross multiply 325x and 15(800)=12000/325.
36.92 gallons of gas for 800 miles
Answer:
It should pass the horizontal and vertical line test.
hope it helps!