(a) * (a+1) = 420
a^2 + a = 420
a^2 + a - 420 = 0
(a+21)(a-20) = 0
a = -21 OR 20
The two integers can be -21 and -20, OR 20 and 21.
Answer: piece of paper or a door
Step-by-step explanation:
.5x=10+.25x
.25x=10
x=40
When you buy 40 songs
The cost equals 20$
Answer: The coordinates of M would be (3,2).
Step-by-step explanation: I don't know how to explain but I'm 100% sure this is the answer. Your welcome :)
A. 176 because if there are 252 total and 76 on the balcony your answer is 252-76.
