Elementary Technical Mathematics
12th Edition
ISBN: 9781337630580
Author: Dale Ewen
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 9.3, Problem 18E
To determine
To calculate: The solution of the pair of equation
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
f(x+T) = f(x)
f(x) = sin² (x) + cos² (x)
T=?
HW: The frame shown in the figure is pinned at A and
C. Use moment distribution method, with and without
modifications, to draw NFD, SFD, and BMD.
B
I
I
40 kN/m
A
3 m
4 m
Q/ Give an example of a simple graph G
Such that h (G) is Euler but G is not.
Chapter 9 Solutions
Elementary Technical Mathematics
Ch. 9.1 - Draw the graphs of each pair of linear equations....Ch. 9.1 - Prob. 2ECh. 9.1 - Draw the graphs of each pair of linear equations....Ch. 9.1 - Prob. 4ECh. 9.1 - Prob. 5ECh. 9.1 - Prob. 6ECh. 9.1 - Prob. 7ECh. 9.1 - Prob. 8ECh. 9.1 - Draw the graphs of each pair of linear equations....Ch. 9.1 - Draw the graphs of each pair of linear equations....
Ch. 9.1 - Prob. 11ECh. 9.1 - Draw the graphs of each pair of linear equations....Ch. 9.1 - Prob. 13ECh. 9.1 - Prob. 14ECh. 9.1 - Prob. 15ECh. 9.1 - Prob. 16ECh. 9.1 - Draw the graphs of each pair of linear equations....Ch. 9.1 - Prob. 18ECh. 9.1 - Prob. 19ECh. 9.1 - Draw the graphs of each pair of linear equations....Ch. 9.1 - Prob. 21ECh. 9.1 - Draw the graphs of each pair of linear equations....Ch. 9.1 - Prob. 23ECh. 9.1 - Prob. 24ECh. 9.1 - Prob. 25ECh. 9.1 - Prob. 26ECh. 9.1 - Prob. 27ECh. 9.1 - Prob. 28ECh. 9.1 - Solve Exercises 27-30 graphically: In a concrete...Ch. 9.1 - Prob. 30ECh. 9.2 - Solve each pair of linear equations by addition....Ch. 9.2 - Solve each pair of linear equations by addition....Ch. 9.2 - Prob. 3ECh. 9.2 - Prob. 4ECh. 9.2 - Prob. 5ECh. 9.2 - Prob. 6ECh. 9.2 - Prob. 7ECh. 9.2 - Prob. 8ECh. 9.2 - Prob. 9ECh. 9.2 - Prob. 10ECh. 9.2 - Prob. 11ECh. 9.2 - Prob. 12ECh. 9.2 - Prob. 13ECh. 9.2 - Prob. 14ECh. 9.2 - Prob. 15ECh. 9.2 - Solve each pair of linear equations by addition....Ch. 9.2 - Prob. 17ECh. 9.2 - Prob. 18ECh. 9.2 - Prob. 19ECh. 9.2 - Prob. 20ECh. 9.2 - Prob. 21ECh. 9.2 - Prob. 22ECh. 9.2 - Solve each pair of linear equations by addition....Ch. 9.2 - Prob. 24ECh. 9.2 - Prob. 25ECh. 9.2 - Prob. 26ECh. 9.2 - Prob. 27ECh. 9.2 - Prob. 28ECh. 9.2 - Prob. 29ECh. 9.2 - Prob. 30ECh. 9.2 - Prob. 31ECh. 9.2 - Prob. 32ECh. 9.2 - Prob. 33ECh. 9.2 - Prob. 34ECh. 9.2 - Prob. 35ECh. 9.2 - Prob. 36ECh. 9.2 - Solve each pair of linear equations by addition....Ch. 9.2 - Prob. 38ECh. 9.2 - Prob. 39ECh. 9.2 - Prob. 40ECh. 9.2 - Prob. 41ECh. 9.2 - Prob. 42ECh. 9.2 - Prob. 43ECh. 9.2 - Solve each pair of linear equations by addition....Ch. 9.3 - Solve, using the substitution method, and check;...Ch. 9.3 - Solve, using the substitution method, and check;...Ch. 9.3 - Prob. 3ECh. 9.3 - Prob. 4ECh. 9.3 - Prob. 5ECh. 9.3 - Solve, using the substitution method, and check;...Ch. 9.3 - Prob. 7ECh. 9.3 - Prob. 8ECh. 9.3 - Solve, using the substitution method, and check;...Ch. 9.3 - Prob. 10ECh. 9.3 - Prob. 11ECh. 9.3 - Prob. 12ECh. 9.3 - Solve, using the substitution method, and check;...Ch. 9.3 - Prob. 14ECh. 9.3 - Prob. 15ECh. 9.3 - Prob. 16ECh. 9.3 - Prob. 17ECh. 9.3 - Prob. 18ECh. 9.3 - Prob. 19ECh. 9.3 - Prob. 20ECh. 9.3 - Solve, using the substitution method, and check;...Ch. 9.3 - Prob. 22ECh. 9.3 - Prob. 23ECh. 9.3 - Prob. 24ECh. 9.3 - Solve, using the substitution method, and check;...Ch. 9.3 - Prob. 26ECh. 9.4 - A board 96 cm long is cut into two pieces so that...Ch. 9.4 - Find the capacity of two trucks if 6 trips of the...Ch. 9.4 - A plumbing contractor decides to field-test two...Ch. 9.4 - A bricklayer lays an average of 150 bricks per...Ch. 9.4 - Two welders worked a total of 48 h on a project....Ch. 9.4 - A contractor finds a bill for $1110 for 720...Ch. 9.4 - A farmer has two types of feed. One has 5%...Ch. 9.4 - A dairy farmer wants to make 125 lb of 12%...Ch. 9.4 - A farmer sells corn for $6.00/bu and soybeans for...Ch. 9.4 - A farmer has a 1.4% solution and a 2.9% solution...Ch. 9.4 - A farmer has a 6% solution and a 12% solution of...Ch. 9.4 - The sum of two capacitors is 85 microfarads (F)....Ch. 9.4 - Nine batteries are hooked in series to provide a...Ch. 9.4 - In a parallel circuit, the total current passing...Ch. 9.4 - How much of an 8% solution and a 12% solution...Ch. 9.4 - The total current in a parallel circuit with seven...Ch. 9.4 - A small single-cylinder engine was operated on a...Ch. 9.4 - In testing a hybrid engine, various solutions of...Ch. 9.4 - An engine on a test stand was operated at two...Ch. 9.4 - A technician stores a parts cleaner as a 65%...Ch. 9.4 - Amy has a 3% solution and an 8% solution of a...Ch. 9.4 - A lawn seed mix containing 8% bluegrass is mixed...Ch. 9.4 - When three identical compressors and five air...Ch. 9.4 - A hospital has 35% saline solution on hand. How...Ch. 9.4 - A nurse gives 1000 mL of an intravenous (IV)...Ch. 9.4 - A hospital has a 4% saline solution and an 8%...Ch. 9.4 - A medication is available in 2-mL vials and in...Ch. 9.4 - A salesman turns in a ticket on two carpets for...Ch. 9.4 - An apartment owner rents one-bedroom apartments...Ch. 9.4 - A sporting goods store carries two types of...Ch. 9.4 - The sum of two resistors is 550 . One is 4.5 times...Ch. 9.4 - The ratio of gravel to cement in a concrete mix is...Ch. 9.4 - A wire 120 cm long is to be cut into two pieces so...Ch. 9.4 - The sum of two resistances is 1500 . The larger is...Ch. 9.4 - A rectangle is twice as long as it is wide. Its...Ch. 9.4 - A duct from a furnace forks into two ducts. The...Ch. 9.4 - The sum of three currents is 210 mA. Two currents...Ch. 9.4 - An experienced welder makes 53 as many welds as a...Ch. 9.4 - On a survey plat, the perimeter of a rectangular-...Ch. 9.4 - A supply duct is to run the perimeter of a...Ch. 9.4 - In a drawing, the perimeter of a room is 40 ft. If...Ch. 9.4 - A rectangular walkway in front of an office...Ch. 9.4 - If the length of a building is 212 times the width...Ch. 9.4 - The center-to-center distance between a fan and a...Ch. 9.4 - A carpenter starts with a board that is 12 ft long...Ch. 9.4 - Taughannock Falls near Ithaca, New York, is about...Ch. 9.4 - Ground corn and soybean meal are blended to...Ch. 9.4 - Two rental airplanes were flown a total of 54 h in...Ch. 9.4 - Jim bought both a municipal bond paying 3.5% and a...Ch. 9.4 - Chef Ruth has 90% lean ground beef and also 75%...Ch. 9.4 - A coffee shop has tables that seat 6 guests and...Ch. 9.4 - The Open Late Restaurant sells chili in cups and...Ch. 9 - Draw the graphs of each pair of linear equations...Ch. 9 - Draw the graphs of each pair of linear equations...Ch. 9 - Draw the graphs of each pair of linear equations...Ch. 9 - Draw the graphs of each pair of linear equations...Ch. 9 - Draw the graphs of each pair of linear equations...Ch. 9 - Draw the graphs of each pair of linear equations...Ch. 9 - Solve each system of equations: x+y=72xy=2Ch. 9 - Solve each system of equations: 3x+2y=11x+2y=5Ch. 9 - Solve each system of equations: 3x5y=32x3y=1Ch. 9 - Solve each system of equations: 2x3y=14x6y=5Ch. 9 - Solve each system of equations: 3x+5y=86x4y=44Ch. 9 - Solve each system of equations: 5x+7y=224x+8y=20Ch. 9 - Solve each system of equations: x+2y=33x+6y=9Ch. 9 - Solve each system of equations: 3x+5y=52y=2xCh. 9 - Solve each system of equations: 5y4x=6x=12yCh. 9 - Solve each system of equations: 3x7y=69y=4x+5Ch. 9 - You can buy twenty 20-amp electrical switches and...Ch. 9 - The sum of the length and width of a rectangular...Ch. 9 - The sum of two inductors is 90 millihenrys (mH)....Ch. 9 - The sum of two lengths is 90 ft, and their...Ch. 9 - Solve each system of equations by the method...Ch. 9 - Prob. 2TCh. 9 - Prob. 3TCh. 9 - Prob. 4TCh. 9 - Prob. 5TCh. 9 - Prob. 6TCh. 9 - Prob. 7TCh. 9 - Prob. 8TCh. 9 - Prob. 9TCh. 9 - The perimeter of a rectangular lot is 600 m. The...Ch. 9 - The sum of two resistances is 550 . The difference...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, subject and related others by exploring similar questions and additional content below.Similar questions
- If X is a continuous random variable having pdf as shown. Find a) the constant k b) P(X>1) c) X, X², 0%, standard deviation. n(x) k -2 -1 0 1 2arrow_forwardWhat is one sample T-test? Give an example of business application of this test? What is Two-Sample T-Test. Give an example of business application of this test? .What is paired T-test. Give an example of business application of this test? What is one way ANOVA test. Give an example of business application of this test? 1. One Sample T-Test: Determine whether the average satisfaction rating of customers for a product is significantly different from a hypothetical mean of 75. (Hints: The null can be about maintaining status-quo or no difference; If your alternative hypothesis is non-directional (e.g., μ≠75), you should use the two-tailed p-value from excel file to make a decision about rejecting or not rejecting null. If alternative is directional (e.g., μ < 75), you should use the lower-tailed p-value. For alternative hypothesis μ > 75, you should use the upper-tailed p-value.) H0 = H1= Conclusion: The p value from one sample t-test is _______. Since the two-tailed p-value…arrow_forwardDecomposition geometry: Mary is making a decorative yard space with dimensions as shaded in green (ΔOAB).Mary would like to cover the yard space with artificial turf (plastic grass-like rug). Mary reasoned that she could draw a rectangle around the figure so that the point O was at a vertex of the rectangle and that points A and B were on sides of the rectangle. Then she reasoned that the three smaller triangles resulting could be subtracted from the area of the rectangle. Mary determined that she would need 28 square meters of artificial turf to cover the green shaded yard space pictured exactly.arrow_forward
- 1. Matrix Operations Given: A = [ 33 ]A-[3-321] -3 B = [342]B-[3-41-2] (a) A² A2 Multiply A× A: -3 = (3 x 32x-3) (3 x 22 x 1) | = |[19–63 |-9-3 -6+21] = A² = 33 33 1-3×3+1x-3) (-3×2+1x1) [12]A2=[3-321][3-321]=[(3×3+2x-3)(-3×3+1x-3)(3×2+2×1)(-3×2+1×1)]=[9-6-9-36+2-6+1 ]=[3-128-5] (b) | A ||A| Determinant of A | A | (3 × 1) (2 x-3)=3+ 6 = 9|A|=(3×1)-(2x-3)=3+6=9 (c) Adjoint of A Swap diagonal elements and change sign of off-diagonals: A = [33], so adj (A) = |¯²]A=[3-321], so adj(A)=[13–23] -3 (d) B-¹B-1 First find | B ||B|: |B | (3x-2)- (1 × -4) = -6 + 4 = −2|B|=(3x-2)-(1x-4)=-6+4=-2 Then the adjoint of B: adj (B) = [² 3 adj(B)=[-24-13] Now, B-1 1 = |B| · adj (B) = 1 [²¯¯³¹³] = [2₂ B 0.5 |B-1=|B|1-adj(B)=-21[-24-13]=[1-20.5-1.5] 2. (a) Matrix Method: Solve (2x + 3y = 6 (2x-3y=14 {2x+3y=62x-3y=14 Matrix form: 22 33-22 = [223-3][xy]=[614] Find inverse of coefficient matrix: Determinant: | M | (2x-3) - (3 x 2) = -6 -6 = -12|M|=(2x-3)-(3×2)=-6-6=-12 Adjoint: adj(M) = [3]adj(M)-[-3-2-32] So…arrow_forwardLet the region R be the area enclosed by the function f(x)= = 3x² and g(x) = 4x. If the region R is the base of a solid such that each cross section perpendicular to the x-axis is an isosceles right triangle with a leg in the region R, find the volume of the solid. You may use a calculator and round to the nearest thousandth. y 11 10 9 00 8 7 9 5 4 3 2 1 -1 -1 x 1 2arrow_forwardUsing the accompanying Accounting Professionals data to answer the following questions. a. Find and interpret a 90% confidence interval for the mean years of service. b. Find and interpret a 90% confidence interval for the proportion of employees who have a graduate degree. view the Accounting Professionals data. Employee Years of Service Graduate Degree?1 26 Y2 8 N3 10 N4 6 N5 23 N6 5 N7 8 Y8 5 N9 26 N10 14 Y11 10 N12 8 Y13 7 Y14 27 N15 16 Y16 17 N17 21 N18 9 Y19 9 N20 9 N Question content area bottom Part 1 a. A 90% confidence interval for the mean years of service is (Use ascending order. Round to two decimal places as needed.)arrow_forward
- Let the region R be the area enclosed by the function f(x) = ex — 1, the horizontal line y = -4 and the vertical lines x = 0 and x = 3. Find the volume of the solid generated when the region R is revolved about the line y = -4. You may use a calculator and round to the nearest thousandth. 20 15 10 5 y I I I | I + -1.5 -1 -0.5 0.5 1 1.5 2 2.5 3 -5 I -10 -15 I + I I T I I + -20 I + -25 I I I -30 I 3.5 4 xarrow_forwardThe joint probability function for the random variables X and Y is y 0 1 2 P(X, Y) = x0 [3/28 9/28 3/281 = 13/14 3/14 2 1/28 0 0 0 Find Mx, My, E(XY), OXY.arrow_forwardIf, based on a sample size of 900,a political candidate finds that 509people would vote for him in a two-person race, what is the 95%confidence interval for his expected proportion of the vote? Would he be confident of winning based on this poll? Question content area bottom Part 1 A 9595% confidence interval for his expected proportion of the vote is (Use ascending order. Round to four decimal places as needed.)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Algebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal Littell
Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage Learning
Elementary AlgebraAlgebraISBN:9780998625713Author:Lynn Marecek, MaryAnne Anthony-SmithPublisher:OpenStax - Rice University
College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning
Algebra: Structure And Method, Book 1
Algebra
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:McDougal Littell
Trigonometry (MindTap Course List)
Trigonometry
ISBN:9781337278461
Author:Ron Larson
Publisher:Cengage Learning
Elementary Algebra
Algebra
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:OpenStax - Rice University
College Algebra (MindTap Course List)
Algebra
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:Cengage Learning
UG/ linear equation in linear algebra; Author: The Gate Academy;https://www.youtube.com/watch?v=aN5ezoOXX5A;License: Standard YouTube License, CC-BY
System of Linear Equations-I; Author: IIT Roorkee July 2018;https://www.youtube.com/watch?v=HOXWRNuH3BE;License: Standard YouTube License, CC-BY