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Pairs of​ markings, a set distance​ apart, are made on highways so that police can detect drivers exceeding the speed limit. Over a fixed​ distance, the speed R varies inversely with the time T. For one particular pair of​ markings, R is 42 mph when T is 8 seconds. Find the speed of a car that travels the given distance in 7 seconds.

Pairs of​ markings, a set distance​ apart, are made on highways so that police can detect drivers exceeding the speed limit. Over a fixed​ distance, the speed R varies inversely with the time T. For one particular pair of​ markings, R is 42 mph when T is 8 seconds. Find the speed of a car that travels the given distance in 7 seconds.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter1: Variables, Expressions, And Integers
Section1.7: Multiplying And Dividing Integers
Problem 27E
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Pairs of​ markings, a set distance​ apart, are made on highways so that police can detect drivers exceeding the speed limit. Over a fixed​ distance, the speed R varies inversely with the time T. For one particular pair of​ markings, R is
42
mph when T is
8
seconds. Find the speed of a car that travels the given distance in
7
seconds.
 
 
 

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Part 1
R=enter your response here
mph
​(Round to the nearest whole​ number.)
 
 
 
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