Answer:
5x + y = 9
3x + 2y = 4
-10x - 2y = -18
3x + 2y = 4
-7x = -14
x = 2
5(2) + y = 9
10 + y = 9
y = -1
(2, -1)
the answer is c
Step-by-step explanation:
Answer:
Tessa's expression is false because -7 times -4 is positive 28, not -28.
Bernette's expressionis false because you must distribute the -7 before subtracting 7 from 2 (peMdas)
Lucy's expression is true because she correctly distributed the -7 to each of the terms in the parentheses and used PEMDAS.
2-21x+28
Answer:
N-12 = 20
N=32
Step-by-step explanation:
Difference means subtract, is means equals
N-12 = 20
Add 12 to each side
N-12+12 =20+12
N = 32
The box of 100 would be the better deal, considering buying 2 boxes of 50 would turn out to be $47.00