babytony1210
08.01.2020 •
Mathematics
Use substitution to solve the system. y = 3x-4 4x-5y = −13
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Ответ:
4x-5y=-13
4x-5(3x-4)=-13
4x-15x+20=-13
-11x+20=-13
33=11x
x=3
y=3(3)-4
y=9-4
y=5
Ответ:
for A)
if she has $ for the downpayment of $70
for B)
360-70+290
290/ 5=58
amount paid = 290-58(#month)
a=290-58m
ANSWER
A= -58m+290