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Ratling [72]
3 years ago
10

a snowplow has maximum speed of 40 miles per hour on a dry highway. It's maximum speed decreases by 1.2 miles per hour for every

inch of snow on the highway. According to this model, at what snow depth will the snow plow be unable to move?
Mathematics
1 answer:
vova2212 [387]3 years ago
8 0

Step-by-step explanation:

The snowplow's speed is 40 mph minus the loss from the snow, which is 1.2 mph times the depth of snow in inches.

y = 40 − 1.2x

When y = 0:

0 = 40 − 1.2x

1.2x = 40

x = 33 ⅓

The snowplow stops moving when the snow is 33 ⅓ inches deep or more.

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