Answer:
6 or 7
Step-by-step explanation:
CHOOSE WISELY
Answer:
4 hours
Step-by-step explanation:
cross multiply
Answer:

Step-by-step explanation:
We have the polynomial x^2 + 18x + 81 and are being asked to factor this into two binomials.
A rule that I follow is what two numbers multiplied make c (in this case 81) and when added make b (in this case is 18).
So what two numbers when :
A. Multiplied make 81
B. Added make 18
This would be 9.
Now that we have the answer, we can put it into binomials.
(x + 9)(x + 9)
Since these are the same, we can combine it and make it into one.

To find the answer to this question you would just add 10 to 70 and multiply by 4 and your answer would be 320