Contemporary Mathematics for Business & Consumers

8th Edition

ISBN: 9781305585447

Author: Robert Brechner, Geroge Bergeman

Publisher: Cengage Learning

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 …

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experime…

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Textbook Question

Chapter 7.III, Problem 8TIE

The Rainbow Appliance Center purchased an order of dishwashers and ovens listing for $36,800. The manufacturer allows Rainbow a series of trade discounts of 25/15/10. What are the single equivalent discount and the amount of the trade discount?

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Chapter 7.III, Problem 7TIE

Chapter 7.III, Problem 1RE

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Question 3 over a field K. In this question, MË(K) denotes the set of n × n matrices (a) Suppose that A Є Mn(K) is an invertible matrix. Is it always true that A is equivalent to A-¹? Justify your answer. (b) Let B be given by 8 B = 0 7 7 0 -7 7 Working over the field F2 with 2 elements, compute the rank of B as an element of M2(F2). (c) Let 1 C -1 1 [4] [6] and consider C as an element of M3(Q). Determine the minimal polynomial mc(x) and hence, or otherwise, show that C can not be diagonalised. [7] (d) Show that C in (c) considered as an element of M3(R) can be diagonalised. Write down all the eigenvalues. Show your working. [8]

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Chapter 7 Solutions

Contemporary Mathematics for Business & Consumers

Ch. 7.I - From the following FotoFair invoice, identify the...Ch. 7.I - Prob. 2TIE Ch. 7.I - What word is represented by each of the following...Ch. 7.I - Prob. 2RE Ch. 7.I - What word is represented by each of the following...Ch. 7.I - Prob. 4RE Ch. 7.I - Prob. 5RE Ch. 7.I - Prob. 6RE Ch. 7.I - Prob. 7RE Ch. 7.I - Prob. 8RE

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The Rainbow Appliance Center purchased an order of dishwashers and ovens listing for $36,800. The manufacturer allows Rainbow a series of trade discounts of 25/15/10. What are the single equivalent discount and the amount of the trade discount?

Solution Summary: The Rainbow Appliance center purchased an order of dishwashers and ovens at a list price of 36,800 and series of trade discount rate is 25/15/10.

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