The intersection of two planes is a line. :) Hope it works.
20x26=520
The answer is D 520.
Hope it helps.
Answer:
the answer is C - no association
Answer:
72y2-45
Step-by-step explanation:
9y2 + 9(7y2 - 5)
you multiply the 9 by the stuff in the parentheses
9y2 + 63y2 - 45
72y2-45