7th Edition

ISBN: 9781133281450

Author: John C. Peterson, Robert D. Smith

Publisher: Cengage Learning

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

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A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.

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Textbook Question

Chapter 43, Problem 63A

Write an equation for each of the following problems, solve for the unknown, and check.

The area of a square equals the length of a side squared, A = s 2 . For each area of a square given, compute the length of a side. Round the answers to 3 decimal places where necessary.
a. 36 square inches
b. 25 64 square foot
c. 1.44 square meters
d. 64.700 square meters
e. 0.049 square foot

Chapter 43, Problem 63A, Write an equation for each of the following problems, solve for the unknown, and check. The area of

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Chapter 43, Problem 62A

Chapter 43, Problem 64A

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Burger Dome sells hamburgers, cheeseburgers, french fries, soft drinks, and milk shakes, as well as a limited number of specialty items and dessert selections. Although Burger Dome would like to serve each customer immediately, at times more customers arrive than can be handled by the Burger Dome food service staff. Thus, customers wait in line to place and receive their orders. Burger Dome analyzed data on customer arrivals and concluded that the arrival rate is 30 customers per hour. Burger Dome also studied the order-filling process and found that a single employee can process an average of 44 customer orders per hour. Burger Dome is concerned that the methods currently used to serve customers are resulting in excessive waiting times and a possible loss of sales. Management wants to conduct a waiting line study to help determine the best approach to reduce waiting times and improve service. Suppose Burger Dome establishes two servers but arranges the restaurant layout so that an…

Note: A waiting line model solver computer package is needed to answer these questions. The Kolkmeyer Manufacturing Company uses a group of six identical machines, each of which operates an average of 18 hours between breakdowns. With randomly occurring breakdowns, the Poisson probability distribution is used to describe the machine breakdown arrival process. One person from the maintenance department provides the single-server repair service for the six machines. Management is now considering adding two machines to its manufacturing operation. This addition will bring the number of machines to eight. The president of Kolkmeyer asked for a study of the need to add a second employee to the repair operation. The service rate for each individual assigned to the repair operation is 0.50 machines per hour. (a) Compute the operating characteristics if the company retains the single-employee repair operation. (Round your answers to four decimal places. Report time in hours.) La = L = Wa = W =…

Chapter 43 Solutions

Mathematics for Machine Technology

Ch. 43 - Solve A34=218 using the addition principle of...Ch. 43 - Solve the equation 4x5x+7x=54 for the unknown...Ch. 43 - Write 0.0000275 in scientific notation.Ch. 43 - Prob. 4A Ch. 43 - Prob. 5A Ch. 43 - Prob. 6A Ch. 43 - Prob. 7A Ch. 43 - Solve each of the following equations using the...Ch. 43 - Prob. 9A Ch. 43 - Prob. 10A

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Solution Summary: The author calculates the area of the square by formula A=s2.

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Chapter 43 Solutions