Mathematics For Machine Technology
8th Edition
ISBN: 9781337798310
Author: Peterson, John.
Publisher: Cengage Learning,
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Textbook Question
Chapter 65, Problem 26AR
The following Exercises 22 through 27 involve circles and sectors. Where necessary, round the answer to 1 decimal place.
Sector: central angle = 230°25', area = 54.36 sq in., radius =
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7. [10 marks]
Let G = (V,E) be a 3-connected graph with at least 6 vertices. Let C be a cycle in G
of length 5. We show how to find a longer cycle in G.
(a) Let x be a vertex of G that is not on C. Show that there are three C-paths
Po, P1, P2 that are disjoint except at the shared initial vertex and only intersect
C at their final vertices.
(b) Show that at least two of P0, P1, P2 have final vertices that are adjacent along C.
(c) Combine two of Po, P1, P2 with C to produce a cycle in G that is longer than C.
Let G be a connected graph with n ≥ 2 vertices. Let A be the adjacency matrix of G.
Prove that the diameter of G is the least number d such that all the non-diagonal entries
of the matrix A are positive.
8. [10 marks]
Suppose that 15 people are at a dinner and that each person knows at least 9 of the
others. Can the diners be seated around a circular table so that each person knows both
of their immediate neighbors? Explain why your answer is correct.
Chapter 65 Solutions
Mathematics For Machine Technology
Ch. 65 - Prob. 1ARCh. 65 - Express each area in Exercises 1 through 6 as...Ch. 65 - Express each area in Exercises 1 through 6 as...Ch. 65 - Express each area in Exercises 1 through 6 as...Ch. 65 - Prob. 5ARCh. 65 - Express each area in Exercises 1 through 6 as...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...
Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The following Exercises 7 through 19 involve...Ch. 65 - The cross section of a dovetail slide is shown....Ch. 65 - Compute the area of the pattern shown. Round the...Ch. 65 - The following Exercises 22 through 27 involve...Ch. 65 - The following Exercises 22 through 27 involve...Ch. 65 - The following Exercises 22 through 27 involve...Ch. 65 - The following Exercises 22 through 27 involve...Ch. 65 - The following Exercises 22 through 27 involve...Ch. 65 - The following Exercises 22 through 27 involve...Ch. 65 - Find the area of each of the segments ACB for...Ch. 65 - Prob. 29ARCh. 65 - Find the area of each of the segments ACB for...Ch. 65 - Find the area of the shaded segment shown. Round...Ch. 65 - A circular plate with a 15.00-inch radius is cut...Ch. 65 - Compute the cross-sectional area of the grooved...Ch. 65 - Find the area of the pattern shown. Round the...Ch. 65 - Prob. 35ARCh. 65 - Express each volume in Exercises 35 through 40 as...Ch. 65 - Prob. 37ARCh. 65 - Express each volume in Exercises 35 through 40 as...Ch. 65 - Express each volume in Exercises 35 through 40 as...Ch. 65 - Express each volume in Exercises 35 through 40 as...Ch. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Prob. 45ARCh. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Prob. 47ARCh. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Prob. 49ARCh. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Prob. 51ARCh. 65 - Prob. 52ARCh. 65 - Prob. 53ARCh. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Prob. 56ARCh. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Solve these prism and cylinder exercises. Where...Ch. 65 - Prob. 60ARCh. 65 - Prob. 61ARCh. 65 - Diameter 9.050 centimeters; Volume Round the...Ch. 65 - Prob. 63ARCh. 65 - Volume = 42.98 cubic inches; Diameter = Round the...Ch. 65 - Volume = 775 cubic centimeters; Diameter = Round...Ch. 65 - The side view of a steel roundhead (hemisphere)...Ch. 65 - Prob. 67ARCh. 65 - A hollow glass sphere has an outside circumference...Ch. 65 - Prob. 69ARCh. 65 - Compute the number of cubic centimeters of iron...
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- 9. [10 marks] Consider the following graph G. (a) Find the Hamilton closure of G. Explain why your answer is correct. (b) Is G Hamiltonian? Explain why your answer is correct.arrow_forward7. [10 marks] Let G = (V,E) be a 3-connected graph with at least 6 vertices. Let C be a cycle in G of length 5. We show how to find a longer cycle in G. Ꮖ (a) Let x be a vertex of G that is not on C. Show that there are three C-paths Po, P1, P2 that are disjoint except at the shared initial vertex x and only intersect C at their final vertices. (b) Show that at least two of Po, P1, P2 have final vertices that are adjacent along C.arrow_forwardNo chatgpt pls will upvotearrow_forward
- 4. [10 marks] Let T be the following tree: Find a graph G whose block graph BL(G) is isomorphic to T. Explain why your answer is correct.arrow_forward5. [10 marks] Determine whether the graph below has a perfect matching. Explain why your answer is correct. ข พarrow_forwardLet k ≥ 1, and let G be a k-regular bipartite graph with bipartition X, Y . Prove that |X| is the minimum size of a vertex cover in G.arrow_forward
- 3. [10 marks] Let Go = (V,E) and G₁ = (V,E₁) be two graphs on the same set of vertices. Let (V, EU E1), so that (u, v) is an edge of H if and only if (u, v) is an edge of Go or of G1 (or of both). H = (a) Show that if Go and G₁ are both Eulerian and En E₁ = Ø (i.e., Go and G₁ have no edges in common), then H is also Eulerian. (b) Give an example where Go and G₁ are both Eulerian, but H is not Eulerian.arrow_forwardLet T be a tree with n vertices. Let k be the maximum degree of a vertex of T. Let l be the length of the longest path in T. Prove that l ≤ n − k +1.arrow_forwardNo chatgpt pls will upvotearrow_forward
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