Explanation Given Information: The score of Cybil on the first four tests were 90 , 91 , 81 and 92 and to get A on five tests, the required average is 90 . Formula used: The average of the given data/numbers is, S n = A Where, S is the sum of numbers, n is the total number of numbers and A is the average of the numbers. Calculation: Consider the sum of scores on five tests is S , the score on five test to maintain a A is x , the total number of tests is n and the average on five test to get an A is A . The total number of tests n is 5

9th Edition

ISBN: 9780321997173

Author: Marvin L. Bittinger, Judith A. Beecher

Publisher: PEARSON

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Chapter 5.1, Problem 18ES

To determine

To calculate: The lowest score that Cybil can get on math test and still receive an A if, to get an A in math, Cybil must score an average of 90 on five tests, her score on the first four tests were 90, 91, 81, and 92.

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Chapter 5.1, Problem 17ES

Chapter 5.1, Problem 19ES

Chapter 5 Solutions

Developmental Mathematics (9th Edition)

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Ch. 5.1 - Prob. 9DE Ch. 5.1 - Prob. 10DE Ch. 5.1 - Prob. 11DE Ch. 5.1 - Prob. 12DE Ch. 5.1 - Prob. 13DE Ch. 5.1 - Prob. 14DE Ch. 5.1 - Prob. 15DE Ch. 5.1 - 16. In a lab, Gina determined the mass, in grams,...Ch. 5.1 - Prob. 1RC Ch. 5.1 - Prob. 2RC Ch. 5.1 - Prob. 3RC Ch. 5.1 - Prob. 4RC Ch. 5.1 - Prob. 1ES Ch. 5.1 - Prob. 2ES Ch. 5.1 - Prob. 3ES Ch. 5.1 - Prob. 4ES Ch. 5.1 - Prob. 5ES Ch. 5.1 - Prob. 6ES Ch. 5.1 - Prob. 7ES Ch. 5.1 - Prob. 8ES Ch. 5.1 - Prob. 9ES Ch. 5.1 - Prob. 10ES Ch. 5.1 - Prob. 11ES Ch. 5.1 - Prob. 12ES Ch. 5.1 - Prob. 13ES Ch. 5.1 - Prob. 14ES Ch. 5.1 - Prob. 15ES Ch. 5.1 - Prob. 16ES Ch. 5.1 - Grading. To get a B in math, Rich must score an...Ch. 5.1 - Prob. 18ES Ch. 5.1 - Prob. 19ES Ch. 5.1 - Prob. 20ES Ch. 5.1 - Median Home Prices. The following table lists the...Ch. 5.1 - Prob. 22ES Ch. 5.1 - Movie Ticket Sales. 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The lowest score that Cybil can get on math test and still receive an A if, to get an A in math, Cybil must score an average of 90 on five tests, her score on the first four tests were 90, 91, 81, and 92.

Solution Summary: The author calculates the lowest score that Cybil can get on math test and still receive an A if she scores an average of 90 on five tests.

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To calculate: The lowest score that Cybil can get on math test and still receive an A if, to get an A in math, Cybil must score an average of 90 on five tests, her score on the first four tests were 90, 91, 81, and 92.

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Chapter 5 Solutions