Mathematics For Machine Technology
8th Edition
ISBN: 9781337798310
Author: Peterson, John.
Publisher: Cengage Learning,
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Chapter 51, Problem 23A
Write the values of the settings on the following varnier protractor scales.
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Assume that a company is considering purchasing a machine for $50,000 that will have a five-year useful life and a $5,000 salvage value. The
machine will lower operating costs by $17,000 per year. The company's required rate of return is 15%. The net present value of this investment
is closest to:
Click here to view Exhibit 12B-1 and Exhibit 12B-2, to determine the appropriate discount factor(s) using the tables provided.
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7. [10 marks]
Let G
=
(V,E) be a 3-connected graph. We prove that for every x, y, z Є V, there is a
cycle in G on which x, y, and z all lie.
(a) First prove that there are two internally disjoint xy-paths Po and P₁.
(b) If z is on either Po or P₁, then combining Po and P₁ produces a cycle on which
x, y, and z all lie. So assume that z is not on Po and not on P₁. Now prove that
there are three paths Qo, Q1, and Q2 such that:
⚫each Qi starts at z;
• each Qi ends at a vertex w; that is on Po or on P₁, where wo, w₁, and w₂ are
distinct;
the paths Qo, Q1, Q2 are disjoint from each other (except at the start vertex
2) and are disjoint from the paths Po and P₁ (except at the end vertices wo,
W1, and w₂).
(c) Use paths Po, P₁, Qo, Q1, and Q2 to prove that there is a cycle on which x, y, and
z all lie. (To do this, notice that two of the w; must be on the same Pj.)
Chapter 51 Solutions
Mathematics For Machine Technology
Ch. 51 - Express 159.3596 as degrees, minutes, and seconds....Ch. 51 - Prob. 2ACh. 51 - Prob. 3ACh. 51 - Prob. 4ACh. 51 - Prob. 5ACh. 51 - Prob. 6ACh. 51 - Prob. 7ACh. 51 - Write the values of angles F-J on the preceding...Ch. 51 - Prob. 9ACh. 51 - a. 98 b. 97 c. 123 d. 150 e. 166
Ch. 51 - Prob. 11ACh. 51 - Lay out a four-sided figure (quadrilateral) of any...Ch. 51 - Prob. 13ACh. 51 - In Exercises 13 through 16, measure each of the...Ch. 51 - Prob. 15ACh. 51 - In Exercises 13 through 16, measure each of the...Ch. 51 - Prob. 17ACh. 51 - In Exercises 13 through 16, measure each of the...Ch. 51 - Prob. 19ACh. 51 - Write the values of the settings on the following...Ch. 51 - Prob. 21ACh. 51 - Write the values of the settings on the following...Ch. 51 - Write the values of the settings on the following...Ch. 51 - Write the values of the settings on the following...Ch. 51 - Write the values of the settings on the following...Ch. 51 - Prob. 26ACh. 51 - Write the values of the settings on the following...Ch. 51 - Write the complements of the angles in Exercises...Ch. 51 - Prob. 29ACh. 51 - Prob. 30ACh. 51 - Prob. 31A
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