NatanelH60228 NatanelH60228

03-11-2022
Mathematics

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Dave can bike his exercise route an hour and half faster than he can walk it. his biking speed is 9 mph faster than his walking speed. if his route is 6 miles long an equation that can be used to find his walking speed. what is dabbed walking speed.

Dave can bike his exercise route an hour and half faster than he can walk it his biking speed is 9 mph faster than his walking speed if his route is 6 miles lon class=

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AllanaP483462 AllanaP483462

03-11-2022

walking = biking + 1.5 hour

biking speed = 9 mph + walking speed

route = 6 miles

6/w = 6/(w + 9) - 3/2

Solving for w:

108 = -3w^2 - 27w ==> 3w^2 + 27w + 108 = 0 ==> x^2 + 9x + 36 = 0

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