Mathematics for the Trades: A Guided Approach, Books a la Carte edition (11th Edition)

11th Edition

ISBN: 9780134765785

Author: Hal Saunders

Publisher: PEARSON

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Textbook Question

Chapter 12, Problem 5FPS

Police Science To determine the speed that a vehicle was traveling at the time of an accident, police officers carefully measure the lengths of the skid marks left at the scene. There are many factors that determine the skid length, and a quick and simple formula for determining the speed is S = 30 ⋅ L ⋅ d ⋅ e , where S is the speed in miles per hour, L is the skid length in feet, d is the drag factor, and e is the braking efficiency. The following table shows the skid lengths for ten accidents that occurred on a particular stretch of an interstate during icy conditions this past winter:

Chapter 12, Problem 5FPS, Police Science To determine the speed that a vehicle was traveling at the time of an accident,

(a) Use the given formula, with d = 0.2 (icy road) and e = 1.0, to calculate the speeds for the given skid lengths and complete the table. (Round to the nearest whole number.)
(b) Find the median speed.
(c) Find the mean speed.
(d) Find the range of the speeds.
(e) Find the standard deviation of the speeds.

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Chapter 12, Problem 4FPS

Chapter 12, Problem 6FPS

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Chapter 12 Solutions

Mathematics for the Trades: A Guided Approach, Books a la Carte edition (11th Edition)

Ch. 12.1 - Solve: 0.82=x100 Ch. 12.1 - Prob. 2LC Ch. 12.1 - Automotive Trades The following bar graph shows...Ch. 12.1 - Trades Management The following graph shows the...Ch. 12.1 - General Interest The following double bar graph...Ch. 12.1 - General Interest The following stacked bar graph...Ch. 12.1 - Allied Health When Dr. Friedrich began working at...Ch. 12.1 - Automotive Trades The following line graph shows...Ch. 12.1 - Construction The following double-line graph...Ch. 12.1 - General Interest Study the circle graph at the top...

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Solution Summary: The author explains the speed formula for skid lengths for ten accidents that occurred on a particular stretch of an interstate during icy conditions this past winter.

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Chapter 12 Solutions