Yes if x=5 then 4(5)= 20 and 15+5=20
Answer:
Step-by-step explanation:
1) -28r +14=-12r-2
-16r=-16
r=1
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2) -35x+5=6x-36
-41x=-41
x=1
Answer:
C. or 54
Step-by-step explanation:
Assuming we are trying to find r then you would get 3*44 because distance=speed*time so distance is for the 3 hour time is 132 miles. To find the reaming distance you do 240-132= 108 so then we know distance/time=speed so 108/2=54 so the speed is 54 mph
X = 13
( x + 4) / 51 = (2x - 7) / 57
585 = 45x
585/45 = 45x/45
x = 13
