It depends, what does a mean? If you know just add what a means to 3 then subtract 4.
Answer:
Step-by-step explanation:
If you're talking about a square, then the area would be 40.
If you're talking about a triangle, then the area would be 20.
Answer:

Step-by-step explanation:
Given
<u>Brand A</u> <u>Brand B</u>



Required
Determine the test statistic (t)
This is calculated as:

Calculate s using:

The equation becomes:




So:






Answer:
-6x^2+x+8
Step-by-step explanation:
Add -1 and 9 because they are the only like terms
Shouldnt it be like 150 idk