Ayomide2004
28.08.2019 •
Mathematics
After 45 sec camdens bathtub fills with 3 inches of water how many seconds will it take to fill tub with 20 inches of water?
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Ответ:
cross multiply
(3)(x) = (45)(20)
3x = 900
x = 900/3
x = 300...300 seconds (or 5 minutes)to fill the tub with 20 inches
Ответ:
5x+2= 3x+14
Move 3x to other side. Sign changes from +3x to -3x.
5x-3x+2= 3x-3x+14
2x+2= 14
Move 2 to the other side. Sign changes from +2 to -2.
2x+2-2= 14-2
2x= 12
Divide by 2
2x/2= 12/2
x= 6