21\25
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Answer:
X=2
Step-by-step explanation:
X - 6y=18
2x-3y=9 |*-2
x -6y=18
-4x+6y=-18
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-3x=0, x=0
2x-3y=9
2*0-3y=9
-3y=9, y=-9/3, y= -3
Answer:
8:39
Step-by-step explanation:
because when simplified, all the rest are 1:5
Answer:
54
Step-by-step explanation:
Divide 162 by 3 and find the constant rate per hour.