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alexandraparava
20.07.2019 •
Mathematics
The number of plastic straws produced by a machine varies directly as the amount of time the machine is operating. if the machine produces 20,000 straws in 8 hours, how many straws can it produce in 50 hours?
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Ответ:
Given is the direct relationship between number of produced straws and the hours of operating machine.
Given that 20,000 straws are produced in 8 hours of machine's operation.
Let's assume that 'x' straws are produced in 50 hours of machine's operation.
Using the concept of proportions, x straws in 50 hours would be proportional to 2000 straws in 8 hours.
Hence, total 125,000 straws would be produced in 50 hours.
Ответ:
B. (1, -1)
C. (5, -1)
D. (5, -3)
I hope this helps