Answer:
It takes him 7 minutes to do 21 problems
Step-by-step explanation:
15/5=3
He did 21 problems
So you would then do...
21/3=7
Using Pythagoras in the first question
c=

which is approximately 16.5
for the second question
we also use Pythagoras

Answer:
f(x) = 2.25x + 5 is the answer
Step-by-step explanation:
Hi! Let me help you!
- Remember, factoring looks like so:
- ab+ac=a(b+c)
- So, we need to find the greatest common factor (G.C.F.) of the polynomial.
- In this case, 6 is the GCF, so we factor it out:
- 6x²+66x+60
- Divide 6, 66 and 60 by 6:
- x²+11x+10
<u>Answer:</u>
x²+11x+10
Hope you find it helpful.

<span>36x³a + 45xa² =</span>9xa(4x²+5a)