4x + 13y = 40
4x + 3y = -40
multiply second equation by -1
4x + 13y = 40
-4x - 3y = 40
add equations together
10y = 80
y = 8
put y in either original equation
4x + 3(8) = -40
4x + 24 = -40
subtract 24 from both sides
4x = 64
x=16
y=8
Answer:
its A
Step-by-step explanation:
have you smiled today? its very important:)
Answer:
The answer A
Step-by-step explanation:
$12 x .20 = $2.40
12 - 2.40 = $9.60
$9.60 x .07 = $0.67
$9.60 + $0.67 = $10.27
Total price (including tax): $10.27
Rounding is important, because you could have endless quotients.
For example, 10 / 3.3 = 3.3333333333333333333333333333333333333.
It is recommended that you stop at the hundreths place and round.
