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13-12-2015
Mathematics

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Starting at 1:00 p.m., the tempature is 35degrees the temperature changes −4 degrees Fahrenheit per hour. Write and solve an equation to find how many hours x it will take to reach −1°F.

Respuesta :

13-12-2015

y=-4x+35 So.... -1=-4x+35 Subtract 35 from each side -36=-4x Divide each side by -4 9=x It will take 9 hours

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rrrr456 rrrr456

14-12-2015

35-4x=-1

35+1 = 4x

36=4x

x=9

Answer Link

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