mel2001love
24.10.2021 •
Mathematics
A special machine is used at a construction site to dig holes. A hole is dug to a depth of 4.75 feet when the machine hits rock. The progress slows to 3/5 feet per hour of digging. The depth of the hole must be at least 12 1/2 feet by the end of the day to stay on schedule.
What is the minimum amount of time the machine must continue at its present rate to complete the hole on schedule?
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The machine requires at least
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hours and
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minutes to complete the hole on schedule.
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Ответ:
Kaia saved $55.15 on a new guitar because it was 75 percent off. The price of the guitar before the discount was $220.60
Step-by-step explanation: