Contemporary Mathematics for Business and Consumers
7th Edition
ISBN: 9781285189758
Author: Robert Brechner, George Bergeman
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 6.III, Problem 20TIE
Solve the following business situation for the original amount before a percent change.
The water level in a large holding tank decreased to 12 feet. If it is down 40% from last week, what was last week’s level?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
1.2.19. Let and s be natural numbers. Let G be the simple graph with vertex set
Vo... V„−1 such that v; ↔ v; if and only if |ji| Є (r,s). Prove that S has exactly k
components, where k is the greatest common divisor of {n, r,s}.
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]
16. Solve the given differential equation:
y" + 4y sin (t)u(t 2π),
-
y(0) = 1, y'(0) = 0
Given,
1
(x² + 1)(x²+4)
1/3
-1/3
=
+
x²+1 x² +4
Send your answer in
pen and paper don't r
eputed ur self down
Don't send the same
previous answer that
was Al generated
Don't use any Al tool
show ur answer in pe
n and paper then take
Chapter 6 Solutions
Contemporary Mathematics for Business and Consumers
Ch. 6.I - Convert the following percents to decimals. a. 27%...Ch. 6.I - Convert the following decimals or whole numbers to...Ch. 6.I - Prob. 3TIECh. 6.I - Prob. 4TIECh. 6.I - Convert the following percents to decimals.
1.
Ch. 6.I - Prob. 2RECh. 6.I - Prob. 3RECh. 6.I - Prob. 4RECh. 6.I - Prob. 5RECh. 6.I - Prob. 6RE
Ch. 6.I - Prob. 7RECh. 6.I - Prob. 8RECh. 6.I - Prob. 9RECh. 6.I - Convert the following percents to decimals.
10....Ch. 6.I - Prob. 11RECh. 6.I - Prob. 12RECh. 6.I - Prob. 13RECh. 6.I - Prob. 14RECh. 6.I - Prob. 15RECh. 6.I - Prob. 16RECh. 6.I - Prob. 17RECh. 6.I - Convert the following decimals or whole numbers to...Ch. 6.I - Prob. 19RECh. 6.I - Prob. 20RECh. 6.I - Prob. 21RECh. 6.I - Prob. 22RECh. 6.I - Prob. 23RECh. 6.I - Prob. 24RECh. 6.I - Prob. 25RECh. 6.I - Prob. 26RECh. 6.I - Prob. 27RECh. 6.I - Prob. 28RECh. 6.I - Prob. 29RECh. 6.I - Prob. 30RECh. 6.I - Prob. 31RECh. 6.I - Prob. 32RECh. 6.I - Prob. 33RECh. 6.I - Prob. 34RECh. 6.I - Prob. 35RECh. 6.I - Prob. 36RECh. 6.I - Prob. 37RECh. 6.I - Prob. 38RECh. 6.I - Prob. 39RECh. 6.I - Prob. 40RECh. 6.I - Prob. 41RECh. 6.I - Prob. 42RECh. 6.I - Prob. 43RECh. 6.I - Prob. 44RECh. 6.I - Prob. 45RECh. 6.I - 46. You have been asked to make a presentation...Ch. 6.II - Solve the following for the portion. What is the...Ch. 6.II - Prob. 6TIECh. 6.II - Solve the following for the portion.
a. Premier...Ch. 6.II - Prob. 8TIECh. 6.II - Prob. 9TIECh. 6.II - Prob. 10TIECh. 6.II - Prob. 11TIECh. 6.II - Prob. 12TIECh. 6.II - Solve the following for the base. Round to...Ch. 6.II - Prob. 1RECh. 6.II - Prob. 2RECh. 6.II - Prob. 3RECh. 6.II - Prob. 4RECh. 6.II - Solve the following for the portion. Round to...Ch. 6.II - Prob. 6RECh. 6.II - Prob. 7RECh. 6.II - Solve the following for the portion. Round to...Ch. 6.II - Prob. 9RECh. 6.II - Prob. 10RECh. 6.II - Prob. 11RECh. 6.II - Prob. 12RECh. 6.II - Prob. 13RECh. 6.II - 14. What is the rate if the base is 288 and the...Ch. 6.II - Solve the following for the rate. Round to the...Ch. 6.II - Solve the following for the rate. Round to the...Ch. 6.II - Prob. 17RECh. 6.II - Solve the following for the rate. Round to the...Ch. 6.II - Prob. 19RECh. 6.II - Solve the following for the rate. Round to the...Ch. 6.II - Prob. 21RECh. 6.II - Prob. 22RECh. 6.II - Prob. 23RECh. 6.II - Solve the following for the base. Round to...Ch. 6.II - Prob. 25RECh. 6.II - Solve the following for the base. Round to...Ch. 6.II - Prob. 27RECh. 6.II - Prob. 28RECh. 6.II - Prob. 29RECh. 6.II - Solve the following for the base. Round to...Ch. 6.II - Solve the following word problems for the portion,...Ch. 6.II - Solve the following word problems for the portion,...Ch. 6.II - Prob. 33RECh. 6.II - Solve the following word problems for the portion,...Ch. 6.II - Solve the following word problems for the portion,...Ch. 6.II - Prob. 36RECh. 6.II - Prob. 37RECh. 6.II - Solve the following word problems for the portion,...Ch. 6.II - Solve the following word problems for the portion,...Ch. 6.II - Solve the following word problems for the portion,...Ch. 6.II - Solve the following word problems for the portion,...Ch. 6.II - Solve the following word problems for the portion,...Ch. 6.II - Prob. 43RECh. 6.II - Solve the following word problems for the portion,...Ch. 6.II - Use the pie chart "Century Mutual Fund -...Ch. 6.II - Use the pie chart "Century Mutual Fund -...Ch. 6.II - Prob. 47RECh. 6.II - Use the pie chart "Century Mutual Fund -...Ch. 6.II - 49. You are the catering manager for the Imperial...Ch. 6.III - Solve the following problem for the rate of...Ch. 6.III - Solve the following problem for the rate of...Ch. 6.III - Solve the following problem for the rate of...Ch. 6.III - Prob. 17TIECh. 6.III - Prob. 18TIECh. 6.III - Solve the following business situation for the new...Ch. 6.III - Solve the following business situation for the...Ch. 6.III - Solve the following business situation for the...Ch. 6.III - Prior to an election, a political research firm...Ch. 6.III - Solve the following increase or decrease problems...Ch. 6.III - Prob. 2RECh. 6.III - Solve the following increase or decrease problems...Ch. 6.III - Solve the following increase or decrease problems...Ch. 6.III - Prob. 5RECh. 6.III - Prob. 6RECh. 6.III - Prob. 7RECh. 6.III - Solve the following increase or decrease problems...Ch. 6.III - Prob. 9RECh. 6.III - Prob. 10RECh. 6.III - Over a two-month period, the number of weekly...Ch. 6.III - Sunshine Honda sold 112 cars this month. If that...Ch. 6.III - 13. At a Sports King store, 850 tennis racquets...Ch. 6.III - At a Safeway Supermarket, the price of yellow...Ch. 6.III - 15. According to the American Association of...Ch. 6.III - 16. Housing prices in Foster County have increased...Ch. 6.III - At Campers Paradise, sales have increased 15%,...Ch. 6.III - 18. According to the U.S. Census Bureau, in 1950,...Ch. 6.III - 19. After a vigorous promotion campaign. Crunchy...Ch. 6.III - 20. The chart “Chip Rivalry" illustrates the...Ch. 6.III - 21. Economic reports indicate that during a recent...Ch. 6 - 1. A percent is a way of expressing a part of).a...Ch. 6 - Prob. 2CRCh. 6 - 3. Percent means “parts per ______.” The percent...Ch. 6 - Prob. 4CRCh. 6 - Prob. 5CRCh. 6 - Prob. 6CRCh. 6 - Prob. 7CRCh. 6 - Prob. 8CRCh. 6 - Prob. 9CRCh. 6 - In the percentage formula, the___ is the variable...Ch. 6 - Prob. 11CRCh. 6 - Prob. 12CRCh. 6 - Prob. 13CRCh. 6 - Prob. 14CRCh. 6 - Prob. 1ATCh. 6 - Prob. 2ATCh. 6 - Prob. 3ATCh. 6 - Prob. 4ATCh. 6 - Prob. 5ATCh. 6 - Prob. 6ATCh. 6 - Prob. 7ATCh. 6 - Prob. 8ATCh. 6 - Prob. 9ATCh. 6 - Prob. 10ATCh. 6 - Prob. 11ATCh. 6 - Prob. 12ATCh. 6 - Prob. 13ATCh. 6 - Prob. 14ATCh. 6 - Prob. 15ATCh. 6 - Prob. 16ATCh. 6 - Prob. 17ATCh. 6 - Prob. 18ATCh. 6 - Prob. 19ATCh. 6 - Prob. 20ATCh. 6 - Prob. 21ATCh. 6 - Prob. 22ATCh. 6 - Prob. 23ATCh. 6 - Prob. 24ATCh. 6 - Solve the following for the portion, rate, or...Ch. 6 - Prob. 26ATCh. 6 - Prob. 27ATCh. 6 - Prob. 28ATCh. 6 - Solve the following for the portion, rate, or...Ch. 6 - Solve the following for the portion, rate, or...Ch. 6 - Prob. 31ATCh. 6 - Prob. 32ATCh. 6 - Solve the following word problems for the unknown....Ch. 6 - Solve the following word problems for the unknown....Ch. 6 - Solve the following word problems for the unknown....Ch. 6 - Solve the following word problems for the unknown....Ch. 6 - Solve the following word problems for the unknown....Ch. 6 - Solve the following word problems for the unknown....Ch. 6 - Solve the following word problems for the unknown....Ch. 6 - Solve the following word problems for the unknown....Ch. 6 - Solve the following word problems for the unknown....Ch. 6 - Prob. 42ATCh. 6 - Solve the following word problems for the unknown....Ch. 6 - Solve the following word problems for the unknown....Ch. 6 - 45. An insurance adjuster for UPS found that 12%...Ch. 6 - 46. Morley Fast, a contractor, built a warehouse...Ch. 6 - Use the chart The Rise of E-Books in Education for...Ch. 6 - Use the chart “The Rise of E-Books in Education”...Ch. 6 - Use the chart “The Rise of E-Books in Education”...
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
- R denotes the field of real numbers, Q denotes the field of rationals, and Fp denotes the field of p elements given by integers modulo p. You may refer to general results from lectures. Question 1 For each non-negative integer m, let R[x]m denote the vector space consisting of the polynomials in x with coefficients in R and of degree ≤ m. x²+2, V3 = 5. Prove that (V1, V2, V3) is a linearly independent (a) Let vi = x, V2 = list in R[x] 3. (b) Let V1, V2, V3 be as defined in (a). Find a vector v € R[×]3 such that (V1, V2, V3, V4) is a basis of R[x] 3. [8] [6] (c) Prove that the map ƒ from R[x] 2 to R[x]3 given by f(p(x)) = xp(x) — xp(0) is a linear map. [6] (d) Write down the matrix for the map ƒ defined in (c) with respect to the basis (2,2x + 1, x²) of R[x] 2 and the basis (1, x, x², x³) of R[x] 3. [5]arrow_forwardQuestion 4 (a) The following matrices represent linear maps on R² with respect to an orthonormal basis: = [1/√5 2/√5 [2/√5 -1/√5] " [1/√5 2/√5] A = B = [2/√5 1/√5] 1 C = D = = = [ 1/3/5 2/35] 1/√5 2/√5 -2/√5 1/√5' For each of the matrices A, B, C, D, state whether it represents a self-adjoint linear map, an orthogonal linear map, both, or neither. (b) For the quadratic form q(x, y, z) = y² + 2xy +2yz over R, write down a linear change of variables to u, v, w such that q in these terms is in canonical form for Sylvester's Law of Inertia. [6] [4]arrow_forwardpart b pleasearrow_forward
- Question 5 (a) Let a, b, c, d, e, ƒ Є K where K is a field. Suppose that the determinant of the matrix a cl |df equals 3 and the determinant of determinant of the matrix a+3b cl d+3e f ГЪ e [ c ] equals 2. Compute the [5] (b) Calculate the adjugate Adj (A) of the 2 × 2 matrix [1 2 A = over R. (c) Working over the field F3 with 3 elements, use row and column operations to put the matrix [6] 0123] A = 3210 into canonical form for equivalence and write down the canonical form. What is the rank of A as a matrix over F3? 4arrow_forwardQuestion 2 In this question, V = Q4 and - U = {(x, y, z, w) EV | x+y2w+ z = 0}, W = {(x, y, z, w) € V | x − 2y + w − z = 0}, Z = {(x, y, z, w) € V | xyzw = 0}. (a) Determine which of U, W, Z are subspaces of V. Justify your answers. (b) Show that UW is a subspace of V and determine its dimension. (c) Is VU+W? Is V = UW? Justify your answers. [10] [7] '00'arrow_forwardGood explanation it sure experts solve itarrow_forward
- Best explains it not need guidelines okkarrow_forwardTask number: A1.1, A1.7 Topic: Celestial Navigation, Compass - Magnetic and Gyro Activ Determine compass error (magnetic and gyro) using azimuth choosing a suitable celestial body (Sun/ Stars/ Planets/ Moon). Apply variation to find the deviation of the magnetic compass. Minimum number of times that activity should be recorded: 6 (2 each phase) Sample calculation (Azimuth- Planets): On 06th May 2006 at 22h20m 10s UTC, a vessel in position 48°00'N 050°00'E observed Mars bearing 327° by compass. Find the compass error. If variation was 4.0° East, calculate the deviation. GHA Mars (06d 22h): Increment (20m 10s): 089° 55.7' 005° 02.5' v (0.9): (+) 00.3' GHA Mars: 094° 58.5' Longitude (E): (+) 050° 00.0' (plus- since longitude is easterly) LHA Mars: 144° 58.5' Declination (06d 22h): d (0.2): N 024° 18.6' (-) 00.1' Declination Mars: N 024° 18.5' P=144° 58.5' (If LHA<180°, P=LHA) A Tan Latitude/ Tan P A Tan 48° 00' Tan 144° 58.5' A = 1.584646985 N (A is named opposite to latitude, except when…arrow_forwardTask number: A1.1, A1.7 Topic: Celestial Navigation, Compass - Magnetic and Gyro Activ Determine compass error (magnetic and gyro) using azimuth choosing a suitable celestial body (Sun/ Stars/ Planets/ Moon). Apply variation to find the deviation of the magnetic compass. Minimum number of times that activity should be recorded: 6 (2 each phase) Sample calculation (Azimuth- Planets): On 06th May 2006 at 22h20m 10s UTC, a vessel in position 48°00'N 050°00'E observed Mars bearing 327° by compass. Find the compass error. If variation was 4.0° East, calculate the deviation. GHA Mars (06d 22h): Increment (20m 10s): 089° 55.7' 005° 02.5' v (0.9): (+) 00.3' GHA Mars: 094° 58.5' Longitude (E): (+) 050° 00.0' (plus- since longitude is easterly) LHA Mars: 144° 58.5' Declination (06d 22h): d (0.2): N 024° 18.6' (-) 00.1' Declination Mars: N 024° 18.5' P=144° 58.5' (If LHA<180°, P=LHA) A Tan Latitude/ Tan P A Tan 48° 00' Tan 144° 58.5' A = 1.584646985 N (A is named opposite to latitude, except when…arrow_forward
- Activ Determine compass error using amplitude (Sun). Minimum number of times that activity should be performed: 3 (1 each phase) Sample calculation (Amplitude- Sun): On 07th May 2006 at Sunset, a vessel in position 10°00'N 010°00'W observed the Sun bearing 288° by compass. Find the compass error. LMT Sunset: LIT: (+) 00d 07d 18h 00h 13m 40m UTC Sunset: 07d 18h 53m (added- since longitude is westerly) Declination (07d 18h): N 016° 55.5' d (0.7): (+) 00.6' Declination Sun: N 016° 56.1' Sin Amplitude = Sin Declination/Cos Latitude = Sin 016°56.1'/ Cos 10°00' = 0.295780189 Amplitude=W17.2N (The prefix of amplitude is named easterly if body is rising, and westerly if body is setting. The suffix is named same as declination) True Bearing=287.2° Compass Bearing= 288.0° Compass Error = 0.8° Westarrow_forwardOnly sure experts solve it correct complete solutions okkarrow_forward4c Consider the function f(x) = 10x + 4x5 - 4x³- 1. Enter the general antiderivative of f(x)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Elementary Geometry For College Students, 7eGeometryISBN:9781337614085Author:Alexander, Daniel C.; Koeberlein, Geralyn M.Publisher:Cengage,Mathematics For Machine TechnologyAdvanced MathISBN:9781337798310Author:Peterson, John.Publisher:Cengage Learning,
- Elementary AlgebraAlgebraISBN:9780998625713Author:Lynn Marecek, MaryAnne Anthony-SmithPublisher:OpenStax - Rice UniversityAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal LittellHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL
Elementary Geometry For College Students, 7e
Geometry
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Cengage,
Mathematics For Machine Technology
Advanced Math
ISBN:9781337798310
Author:Peterson, John.
Publisher:Cengage Learning,
Elementary Algebra
Algebra
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:OpenStax - Rice University
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
Holt Mcdougal Larson Pre-algebra: Student Edition...
Algebra
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
01 - What Is A Differential Equation in Calculus? Learn to Solve Ordinary Differential Equations.; Author: Math and Science;https://www.youtube.com/watch?v=K80YEHQpx9g;License: Standard YouTube License, CC-BY
Higher Order Differential Equation with constant coefficient (GATE) (Part 1) l GATE 2018; Author: GATE Lectures by Dishank;https://www.youtube.com/watch?v=ODxP7BbqAjA;License: Standard YouTube License, CC-BY
Solution of Differential Equations and Initial Value Problems; Author: Jefril Amboy;https://www.youtube.com/watch?v=Q68sk7XS-dc;License: Standard YouTube License, CC-BY