Answer:
10.75
Step-by-step explanation:
To get the average, we always SUM UP all the numbers and divide by the number of numbers.
We do this for "change" row since we want average of "change".
Let's add up all the changes:
11 + 12 + 10 + 10 + 11 + 10 + 11 = 75
How many numbers are there?
There are 7 numbers
Now, the average:
Average = Sum/Number of Numbers
Average = 
The average = 10.75
Answer:
When you use x its to replace a number
Answer:
243
Step-by-step explanation:
3*3*3*3*3=243
Answer:
2.
x=3 y=3
Step-by-step explanation:
3-3=0
3+3=6
If 3x-3y equals 0, then what's x+y. It concluded to 6