Contemporary Mathematics for Business & Consumers
8th Edition
ISBN: 9781305585447
Author: Robert Brechner, Geroge Bergeman
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 8.I, Problem 13RE
Solve the following word problems. Round dollars to the nearest cent and percents to the nearest tenth of a percent.
After a wholesaler adds a markup of $420 to a TV. it sold for $949. What is the cost of the TV?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
1) Compute the inverse of the following matrix.
0
1
1
A =
5
1
-1
2-3
-3
Question 3 (5pt): A chemical reaction. In an elementary chemical reaction,
single molecules of two reactants A and B form a molecule of the product C :
ABC. The law of mass action states that the rate of reaction is proportional
to the product of the concentrations of A and B:
d[C]
dt
= k[A][B]
(where k is a constant positive number). Thus, if the initial concentrations are
[A] =
= a moles/L and [B] = b moles/L we write x = [C], then we have
(E):
dx
dt
=
k(ax)(b-x)
1
(a) Write the differential equation (E) with separate variables, i.e. of the form
f(x)dx = g(t)dt.
(b) Assume first that a b. Show that
1
1
1
1
=
(a - x) (b - x)
-
a) a - x
b - x
b)
(c) Find an antiderivative for the function f(x) = (a-x) (b-x) using the previous
question.
(d) Solve the differentiel equation (E), i.e. find x as a function of t. Use the fact
that the initial concentration of C is 0.
(e) Now assume that a = b. Find x(t) assuming that a = b. How does this
expression for x(t) simplify if it is known that [C] =…
2) Consider the matrix
M
=
[1 2 3 4 5
0 2 3 4 5
00345
0 0 0 4 5
0 0 0 0 5
Determine whether the following statements are True or False.
A) M is invertible.
B) If R5 and Mx = x, then x = 0.
C) The last row of M² is [0 0 0 0 25].
D) M can be transformed into the 5 × 5 identity matrix by a sequence of elementary
row operations.
E) det (M) 120
=
Chapter 8 Solutions
Contemporary Mathematics for Business & Consumers
Ch. 8.I - For the following, use the basic retailing...Ch. 8.I - For the following, use the basic retailing...Ch. 8.I - Prob. 3TIECh. 8.I - Prob. 4TIECh. 8.I - Prob. 5TIECh. 8.I - Prob. 6TIECh. 8.I - Prob. 1RECh. 8.I - For the following items, calculate the missing...Ch. 8.I - Prob. 3RECh. 8.I - For the following items, calculate the missing...
Ch. 8.I - Prob. 5RECh. 8.I - Item Cost Amount of Markup Selling Price Percent...Ch. 8.I - Prob. 7RECh. 8.I - Amount of Percent...Ch. 8.I - Amount of Percent Markup Item Cost Markup Selling...Ch. 8.I - Amount of Percent Markup Item Cost Markup Selling...Ch. 8.I - Solve the following word problems. Round dollars...Ch. 8.I - Solve the following word problems. Round dollars...Ch. 8.I - Solve the following word problems. Round dollars...Ch. 8.I - Prob. 14RECh. 8.I - Solve the following word problems. Round dollars...Ch. 8.I - Prob. 16RECh. 8.I - Solve the following word problems. Round dollars...Ch. 8.I - Solve the following word problems. Round dollars...Ch. 8.I - Solve the following word problems. Round dollars...Ch. 8.I - Solve the following word problems. Round dollars...Ch. 8.I - Prob. 21RECh. 8.I - Solve the following word problems. Round dollars...Ch. 8.I - Solve the following word problems. Round dollars...Ch. 8.I - Prob. 24RECh. 8.I - Solve the following word problems. Round dollars...Ch. 8.II - Deals on Wheels buys bicycles from the distributor...Ch. 8.II - Prob. 8TIECh. 8.II - At Video Outlet, a PlayStation 4 game is marked up...Ch. 8.II - For the following items, calculate the missing...Ch. 8.II - Prob. 2RECh. 8.II - Prob. 3RECh. 8.II - Prob. 4RECh. 8.II - For the following items, calculate the missing...Ch. 8.II - For the following items, calculate the missing...Ch. 8.II - Prob. 7RECh. 8.II - For the following items, calculate the missing...Ch. 8.II - For the following items, calculate the missing...Ch. 8.II - For the following items, calculate the missing...Ch. 8.II - For the following items, calculate the missing...Ch. 8.II - For the following items, calculate the missing...Ch. 8.II - Solve the following word problems. Round dollars...Ch. 8.II - Prob. 14RECh. 8.II - Solve the following word problems. Round dollars...Ch. 8.II - Solve the following word problems. Round dollars...Ch. 8.II - Solve the following word problems. Round dollars...Ch. 8.II - Solve the following word problems. Round dollars...Ch. 8.II - Solve the following word problems. Round dollars...Ch. 8.II - Solve the following word problems. Round dollars...Ch. 8.II - Solve the following word problems. Round dollars...Ch. 8.II - Solve the following word problems. Round dollars...Ch. 8.II - 23. If Costco pays $37.50 for the vacuum cleaner...Ch. 8.III - A tennis racquet that originally sold for $75 was...Ch. 8.III - Craftsman’s Village originally sold paneling for...Ch. 8.III - Prob. 14TIECh. 8.III - In September, Tire Depot in Chicago purchased snow...Ch. 8.III - Prob. 16TIECh. 8.III - Prob. 1RECh. 8.III - Prob. 2RECh. 8.III - Prob. 3RECh. 8.III - For the following items, calculate the missing...Ch. 8.III - Prob. 5RECh. 8.III - Prob. 6RECh. 8.III - Prob. 7RECh. 8.III - Prob. 8RECh. 8.III - For the following items, calculate the missing...Ch. 8.III - Prob. 10RECh. 8.III - Prob. 11RECh. 8.III - Prob. 12RECh. 8.III - Prob. 13RECh. 8.III - Solve the following word problems. Round dollars...Ch. 8.III - Prob. 15RECh. 8.III - Solve the following word problems. Round dollars...Ch. 8.III - Prob. 17RECh. 8.III - Prob. 18RECh. 8.III - Solve the following word problems. Round dollars...Ch. 8.III - Solve the following word problems, rounding...Ch. 8.III - Solve the following word problems, rounding...Ch. 8.III - Solve the following word problems. Round dollars...Ch. 8.III - Solve the following word problems. Round dollars...Ch. 8 - The retailing equation states that the selling...Ch. 8 - 2. In business, expenses are separated into two...Ch. 8 - There are two ways of expressing markup as a...Ch. 8 - Write the formula for calculating the selling...Ch. 8 - Prob. 5CRCh. 8 - The percent markup based on selling price is equal...Ch. 8 - Prob. 7CRCh. 8 - Prob. 8CRCh. 8 - Prob. 9CRCh. 8 - Prob. 10CRCh. 8 - A price reduction from the original selling price...Ch. 8 - Prob. 12CRCh. 8 - Prob. 13CRCh. 8 - 14. Products that have a certain shelf life and...Ch. 8 - Solve the following word problems. Round dollars...Ch. 8 - Prob. 2ATCh. 8 - Prob. 3ATCh. 8 - Solve the following word problems. Round dollars...Ch. 8 - Solve the following word problems. Round dollars...Ch. 8 - Prob. 6ATCh. 8 - Solve the following word problems. Round dollars...Ch. 8 - Solve the following word problems. Round dollars...Ch. 8 - Solve the following word problems. Round dollars...Ch. 8 - Solve the following word problems. Round dollars...Ch. 8 - Prob. 11ATCh. 8 - Prob. 12ATCh. 8 - Solve the following word problems. Round dollars...Ch. 8 - Solve the following word problems. Round dollars...Ch. 8 - Solve the following word problems. Round dollars...
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
- 3) Find an equation of the plane containing (0,0,0) and perpendicular to the line of intersection of the planes x + y + z = 3 and x y + z = 5. -arrow_forward3) Find the volume of the solid that lies inside both the sphere x² + y² + z² cylinder x²+y² = 1. = 4 and thearrow_forward1) In the xy-plane, what type of conic section is given by the equation - √√√(x − 1)² + (y − 1)² + √√√(x + 1)² + (y + 1)² : - = 3?arrow_forward
- 1) Compute the following limit. lim x-0 2 cos(x) 2x² - x4arrow_forward3) Let V be the vector space of all functions f: RR. Prove that each W below is a subspace of V. A) W={f|f(1) = 0} B) W = {f|f(1) = ƒ(3)} C) W={ff(x) = − f(x)}arrow_forwardTranslate the angument into symbole from Then determine whether the argument is valid or Invalid. You may use a truth table of, it applicable compare the argument’s symbolic form to a standard valid or invalid form. pot out of bed. The morning I did not get out of bed This moring Mat woke up. (1) Cidt the icon to view tables of standard vald and braild forms of arguments. Let prepresent."The morning Must woke up "and let a represent “This morning I got out of bed.” Seled the cared choice below and II in the answer ber with the symbolic form of the argument (Type the terms of your expression in the same order as they appear in the original expression) A. The argument is valid In symbolic form the argument is $\square $ B. The angunent is braid In symbolic form the argument is $\square $arrow_forward
- Ms.sally has 12 studentsMr Franklin has twice as many students as Ms. Sally.how many students does Mr Franklin have?arrow_forwardexplainwhat is means for a shape to be symmetricarrow_forwardy = f(x) b C The graph of y = f(x) is shown in the figure above. On which of the following intervals are dy > 0 and dx d²y dx2 <0? I. aarrow_forward3 2 1 y O a The graph of the function f is shown in the figure above. Which of the following statements about f is true? о limb f(x) = 2 Olima f(x) = 2 о lima f (x) = lim x →b f(x) → f (x) = 1 limb. lima f(x) does not existarrow_forwardQuestion 1 (1pt). The graph below shows the velocity (in m/s) of an electric autonomous vehicle moving along a straight track. At t = 0 the vehicle is at the charging station. 1 8 10 12 0 2 4 6 (a) How far is the vehicle from the charging station when t = 2, 4, 6, 8, 10, 12? (b) At what times is the vehicle farthest from the charging station? (c) What is the total distance traveled by the vehicle?arrow_forwardQuestion 2 (1pt). Evaluate the following (definite and indefinite) integrals (a) / (e² + ½) dx (b) S (3u 2)(u+1)du (c) [ cos³ (9) sin(9)do .3 (d) L³ (₂ + 1 dzarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_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
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
Mathematics For Machine TechnologyAdvanced MathISBN:9781337798310Author:Peterson, John.Publisher: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
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Mathematics For Machine Technology
Advanced Math
ISBN:9781337798310
Author:Peterson, John.
Publisher:Cengage Learning,
Use of ALGEBRA in REAL LIFE; Author: Fast and Easy Maths !;https://www.youtube.com/watch?v=9_PbWFpvkDc;License: Standard YouTube License, CC-BY
Compound Interest Formula Explained, Investment, Monthly & Continuously, Word Problems, Algebra; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=P182Abv3fOk;License: Standard YouTube License, CC-BY
Applications of Algebra (Digit, Age, Work, Clock, Mixture and Rate Problems); Author: EngineerProf PH;https://www.youtube.com/watch?v=Y8aJ_wYCS2g;License: Standard YouTube License, CC-BY