Explanation Given: For a five-hundred-miles race Alexander Rossi’s speed was 92 miles per hour more than Ray Harroun’s speed and he took 3.6 hours less time than Harroun. Formula Used: Time = Distance Speed and, solution of the general quadratic equation a x 2 + b x + c = 0 is given by x = − b ± b 2 − 4 a c 2 a Calculation: Consider the speed of Harroun is x miles per hour. Then, the speed of Rossi will be x + 92 miles per hour . Since, distance covered for both is same as 500 miles . Also, it is provided that Rossi took 3.6 hours less than Harroun that can be written as 500 x − 500 x + 92 = 3.72 500 ( x + 92 − x ) x ( x + 92 ) = 3.72 500 × 92 = 3.72 x ( x + 92 ) 500 × 92 3

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ISBN: 9780135904282

Author: Lial, HUNGERFO

Publisher: PEARSON

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Chapter 1.7, Problem 64E

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To calculate: The Harroun’s and Rossi’ rates to the nearest tenth, when Alexander Rossi’s speed is 92 miles per hour more than Ray Harroun’s speed and he took 3.6 hours less time than Harroun in a five hundred mile race.

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Chapter 1.7, Problem 63E

Chapter 1.7, Problem 65E

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MYMATHLAB ACCESS CODE - MATHEMATICS WIT

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The Harroun’s and Rossi’ rates to the nearest tenth, when Alexander Rossi’s speed is 92 miles per hour more than Ray Harroun’s speed and he took 3.6 hours less time than Harroun in a five hundred mile race.

Solution Summary: The author calculates the Harroun and Rossi's rates to the nearest tenth.

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To calculate: The Harroun’s and Rossi’ rates to the nearest tenth, when Alexander Rossi’s speed is 92 miles per hour more than Ray Harroun’s speed and he took 3.6 hours less time than Harroun in a five hundred mile race.

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