ashhuizing
31.10.2020 •
Mathematics
An elevator ascends (goes up) at a rate of 750 feet per minute.
A.Proportional
B.Non Proportional
The cost of a gym membership, c, with a $50 membership fee and $22
monthly fee.
A.Proportional
B.Non Proportional
1 point
The temperature drops 2 degrees every hour after starting at 50 degrees
at noon.?
A.Proportional
B.Non Proportional
Solved
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Ответ:
See below
Step-by-step explanation:
Part ARequired equations:
x + y = 55y = x + 25Part BSubstitute y in the first equation and solve for x:
x + x + 25 = 552x = 55 - 252x = 30x = 15Jackie spends 15 min on running every day
Part CLet dancing time y = 45, then:
x + y = 55x + 45 = 55x = 10The difference in times:
45 - 10 = 35 ≠ 25If she spends 45 minutes on dancing then would spend 10 minutes on running and the difference is not 25 minutes, therefore it is impossible.