Answer:
- 3x² + x + 5
Step-by-step explanation:
- 2x² + 4x + 5 - (x² + 3x) ← distribute by - 1
= - 2x² + 4x + 5 - x² - 3x ← collect like terms
= - 3x² + x + 5
13.5 you can do this in a calculator by multiplying 90 by .15
Answer:
a=g/c
or
g/c=a
Step-by-step explanation:
divide c on both sides and you will get a=g/c or g/c=a
Answer:
67.5
Step-by-step explanation:
this gives you the basis of the problem, 2 pages every 3 minutes, so that means that you have to divide 45 by 2, this will give you 22.5
then you multiply by 3 because 22.5 is how many sets of 2 Ella has to read, and if we remember every set of 2 pages takes 3 minutes, so 22.5 times 3 is 67.5, but if you want the answer in time it would be 67 minutes and 30 seconds because a minute is 60 seconds and half of that is 30
Given problem;
A = 
r²
Solve for π;
To solve for π implies that we make it the subject of the expression.
So;
A = π r²
Now multiply both sides by 
So;
A x = x r² x
r² cancels out from the right side and leaves only π;
π = 
So 
