anayamulay
04.07.2019 •
Mathematics
Use substitution to solve the system. -4x+3y=-11 y=3x-12
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Ответ:
substitute y = 3x-12 into -4x + 3y = -11
-4x +3 (3x-12) = -11
distribute
-4x +9x-36 = -11
combine like terms
5x - 36 = -11
add 36 to each side
5x = 25
divide each side by 4
x = 5
noe we need to find y
y = 3x -12
y = 3(5) -12
= 15 -12
y = 3
answer (5,3)
Ответ:
225 miles
Step-by-step explanation:
50 x 4.5 = 225