Mathematics, 23.07.2019 06:00 pr47723
14. anna burned 15 calories per minute running for x minutes and 10 calories per minute hiking for y minutes. she spent a total of 60 minutes running and hiking and burned 700 calories. the system of equations shown below can be used to determine how much time anna spent on each exercise. 15x + 10y = 700 x + y = 60 how many minutes, x, has anna spent running?
Answers: 1
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14. anna burned 15 calories per minute running for x minutes and 10 calories per minute hiking for y...
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