Practical Business Math Procedures
12th Edition
ISBN: 9781259540554
Author: Jeffrey Slater, Sharon Wittry
Publisher: McGraw-Hill Education
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Chapter 20, Problem 3PT
To determine
The amount that insurance company has to pay.
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A communications tower is located at the top
of a steep hill, as shown. The angle of
inclination of the hill is 77°. A guy wire is to be
attached to the top of the tower and to the
ground, 102 ft downhill from the base of the
tower. The angle formed by the guy wire is 9°.
Find the length of the cable required for the
guy wire.
9°
102 ft
77°
NOTE: The picture is NOT drawn to scale.
length of guy-wire =
ft
Enter your answer as a number; your answer
should be accurate to 2 decimal places.
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Under certain conditions, the number of diseased cells N(t) at time t increases at a rate N'(t) = Aekt, where A is the rate of increase at time 0 (in cells per day) and k is a constant.
(a) Suppose A = 60, and at 3 days, the cells are growing at a rate of 180 per day. Find a formula for the number of cells after t days, given that 200 cells are present at t = 0.
(b) Use your answer from part (a) to find the number of cells present after 8 days.
(a) Find a formula for the number of cells, N(t), after t days.
N(t) =
(Round any numbers in exponents to five decimal places. Round all other numbers to the nearest tenth.)
Chapter 20 Solutions
Practical Business Math Procedures
Ch. 20.1 - Bill Boot, age 39, purchased a $60,000, 5-year...Ch. 20.1 - Prob. 2PQCh. 20.1 - Prob. 1EPQCh. 20.1 - Prob. 2EPQCh. 20.1 - Use the table in the Business Math Handbook to...Ch. 20.1 - Prob. 2AHCh. 20.1 - Prob. 3AHCh. 20.1 - Prob. 4AHCh. 20.1 - Prob. 5AHCh. 20.1 - Prob. 6AH
Ch. 20.1 - If Gary Thomas decides to cash in his $45,000...Ch. 20.1 - Prob. 8AHCh. 20.1 - Prob. 9AHCh. 20.1 - Prob. 10AHCh. 20.1 - Prob. 11AHCh. 20.2 - Prob. 1PQCh. 20.2 - Prob. 2PQCh. 20.2 - Prob. 3PQCh. 20.2 - Prob. 1EPQCh. 20.2 - Prob. 2EPQCh. 20.2 - Prob. 3EPQCh. 20.2 - Prob. 1AHCh. 20.2 - Prob. 2AHCh. 20.2 - Prob. 3AHCh. 20.2 - Prob. 4AHCh. 20.2 - Prob. 5AHCh. 20.2 - Prob. 6AHCh. 20.2 - Prob. 7AHCh. 20.2 - Prob. 8AHCh. 20.2 - Prob. 9AHCh. 20.2 - Prob. 10AHCh. 20.2 - Prob. 11AHCh. 20.3 - Calculate the annual auto premium for Mel Jones...Ch. 20.3 - Prob. 2PQCh. 20.3 - Prob. 1EPQCh. 20.3 - Prob. 2EPQCh. 20.3 - Prob. 1AHCh. 20.3 - Prob. 2AHCh. 20.3 - Prob. 3AHCh. 20.3 - Prob. 4AHCh. 20.3 - Prob. 5AHCh. 20.3 - Prob. 6AHCh. 20.3 - Prob. 7AHCh. 20.3 - Prob. 8AHCh. 20.3 - Prob. 9AHCh. 20.3 - Prob. 10AHCh. 20.3 - Prob. 11AHCh. 20.3 - Prob. 12AHCh. 20.3 - Prob. 13AHCh. 20.3 - Prob. 14AHCh. 20.3 - Prob. 15AHCh. 20.3 - Prob. 16AHCh. 20 - Prob. 1ECPCh. 20 - Prob. 2ECPCh. 20 - Prob. 3ECPCh. 20 - Prob. 4ECPCh. 20 - Prob. 5ECPCh. 20 - Prob. 6ECPCh. 20 - Prob. 7ECPCh. 20 - Calculate the total cost of a fire insurance...Ch. 20 - Prob. 9ECPCh. 20 - Prob. 10ECPCh. 20 - Prob. 11ECPCh. 20 - Prob. 12ECPCh. 20 - Calculate the annual auto insurance premium for...Ch. 20 - Prob. 14ECPCh. 20 - Prob. 15ECPCh. 20 - Prob. 16ECPCh. 20 - Prob. 17ECPCh. 20 - Prob. 18ECPCh. 20 - Prob. 19ECPCh. 20 - Prob. 20ECPCh. 20 - Prob. 21ECPCh. 20 - Prob. 22ECPCh. 20 - Prob. 23ECPCh. 20 - Prob. 24ECPCh. 20 - Prob. 25ECPCh. 20 - Prob. 26ECPCh. 20 - Marika Katz bought a new Blazer and insured it...Ch. 20 - Prob. 28ECPCh. 20 - Prob. 29ECPCh. 20 - Prob. 30ECPCh. 20 - Prob. 1PTCh. 20 - Prob. 2PTCh. 20 - Prob. 3PTCh. 20 - Prob. 4PTCh. 20 - Prob. 5PTCh. 20 - Prob. 6PT
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- The marginal revenue (in thousands of dollars) from the sale of x handheld gaming devices is given by the following function. R'(x) = 4x (x² +26,000) 2 3 (a) Find the total revenue function if the revenue from 125 devices is $17,939. (b) How many devices must be sold for a revenue of at least $50,000? (a) The total revenue function is R(x) = (Round to the nearest integer as needed.) given that the revenue from 125 devices is $17,939.arrow_forwardUse substitution to find the indefinite integral. S 2u √u-4 -du Describe the most appropriate substitution case and the values of u and du. Select the correct choice below and fill in the answer boxes within your choice. A. Substitute u for the quantity in the numerator. Let v = , so that dv = ( ) du. B. Substitute u for the quantity under the root. Let v = u-4, so that dv = (1) du. C. Substitute u for the quantity in the denominator. Let v = Use the substitution to evaluate the integral. so that dv= ' ( du. 2u -du= √√u-4arrow_forwardConsider the state space model X₁ = §Xt−1 + Wt, Yt = AX+Vt, where Xt Є R4 and Y E R². Suppose we know the covariance matrices for Wt and Vt. How many unknown parameters are there in the model?arrow_forward
- Use substitution to find the indefinite integral. Зи u-8 du Describe the most appropriate substitution case and the values of u and du. Select the correct choice below and fill in the answer boxes within your choice. A. Substitute u for the quantity in the numerator. Let v = , so that dv = ( ( ) du. B. Substitute u for the quantity under the root. Let v = u-8, so that dv = (1) du. C. Substitute u for the quantity in the denominator. Let v = so that dv= ( ) du. Use the substitution to evaluate the integral. S Зи -du= u-8arrow_forwardAloha Airlines Flight 007 is flying due east but finds it necessary to detour around a group of thundershowers. The plane 1st turns at a bearing of N 73° E, flies for a while, then 2nd turns to intercept the original path and travels for 50 km at a bearing of S 41° E, back to the original path. As stated the plane traveled 50 km in the 2nd leg of the journey getting back to the path. How far did the plane travel in the 1st leg of the journey?arrow_forwardQuestion 6 Aloha Airlines Flight 007 is flying due east but finds it necessary to detour around a group of thundershowers. The plane 1st turns at a bearing of N 73° E, flies for a while, then 2nd turns to intercept the original path and travels for 50 km at a bearing of S 41° E, back to the original path. As stated the plane traveled 50 km in the 2nd leg of the journey getting back to the path. How far did the plane travel in the 1st leg of the journey? Question Help: Video Submit Question Jump to Answer P3 E E T Q Search L W F1 % R R FS F € t X C V 08 7 47 * B FB Y I E 7 コ コ I Barrow_forward
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