On some interstate highways, the max speed a car may go is 65mph. a tractor-trailer may not drive more than 55mph. The minimum speed for all vehicles is 45 mph. Write an inequality to represent an allowable speed for the tractor-trailer and car.

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Mathematics

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17 October, 11:54

On some interstate highways, the max speed a car may go is 65mph. a tractor-trailer may not drive more than 55mph. The minimum speed for all vehicles is 45 mph. Write an inequality to represent an allowable speed for the tractor-trailer and car.

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Roman Weber · Answer 1

For tractor 55 ≥ t ≥ 45 and read as tractor speed is less than or equivalent to 55 but more than or equal to 45.

for car 65 ≥ c ≥ 45 and read as car speed is less than or equivalent to 65 but more than or equal to 45.