Answer:
81(x + 2y)(x - 2y)
Step-by-step explanation:

This would be 85 use the percent in division
Short answer b 7m
Very simple just do the math mostly multiplying
11.45
the 11 is ur whole number...it stays ur whole number
the 0.45 is ur fraction...and since the last number (5) is in the hundredths place, put it over 100
so u now have : 11 45/100 which reduces to 11 9/20 and if u need it in improper fraction form, it is 229/20
Answer:
C. (4,-7)
Step-by-step explanation:
To answer this question, I just graphed the two equations. Then I found where they intersected.