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jlong2043
31.08.2019 •
Mathematics
If it takes 5 men 20 hours to brick a house, how long will it take 8 men to do the job if they work at the same rate ?
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Ответ:
Yes
Step-by-step explanation:
We can substitute the point (2, 2) into the equation. So, in place of x would be 2 and in place of y would be 2 as well:
y = 6 - 2x
2 = 6 - 2(2)
2 = 6 - 4
2 = 2
Since the above is a true statement, the point (2, 2) must belong to the line y = 6 - 2x