Precalculus: A Unit Circle Approach
2nd Edition
ISBN: 9780321825391
Author: Ratti
Publisher: PEARSON
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Chapter A.3, Problem 70E
To determine
(a)
To write a rational expression in x whose values give the percentage (in decimal form) of acid in the reservoir when x gallons of water are added to it.
To determine
(b)
To find the percentage of acid in the reservoir if 100,000 gallons of water are added to it.
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4c
Consider the function f(x) = 10x + 4x5 - 4x³- 1.
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A tank contains 60 kg of salt and 2000 L of water. Pure water enters a tank at the rate 8 L/min. The
solution is mixed and drains from the tank at the rate 11 L/min.
Let y be the number of kg of salt in the tank after t minutes.
The differential equation for this situation would be:
dy
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y= 0.05y + 5
y(0) = 100
y(t) =
Chapter A.3 Solutions
Precalculus: A Unit Circle Approach
Ch. A.3 - In exercises 10, reduce each rational expression...Ch. A.3 - Prob. 2ECh. A.3 - Prob. 3ECh. A.3 - Prob. 4ECh. A.3 - Prob. 5ECh. A.3 - Prob. 6ECh. A.3 - Prob. 7ECh. A.3 - Prob. 8ECh. A.3 - In exercises1-10, reduce each rational expression...Ch. A.3 - Prob. 10E
Ch. A.3 - Prob. 11ECh. A.3 - Prob. 12ECh. A.3 - Prob. 13ECh. A.3 - Prob. 14ECh. A.3 - Prob. 15ECh. A.3 - In Exercises 11-20, multiply or divide as...Ch. A.3 - In Exercises 11-20, multiply or divide as...Ch. A.3 - In Exercises 11-20, multiply or divide as...Ch. A.3 - In Exercises 11-20, multiply or divide as...Ch. A.3 - In Exercises 11-20, multiply or divide as...Ch. A.3 - In Exercises 21-30, add and subtract as indicated....Ch. A.3 - In Exercises 21-30, add and subtract as indicated....Ch. A.3 - In Exercises 21-30, add and subtract as indicated....Ch. A.3 - Prob. 24ECh. A.3 - In Exercises 21-30, add and subtract as indicated....Ch. A.3 - In Exercises 21-30, add and subtract as indicated....Ch. A.3 - In Exercises 21-30, add and subtract as indicated....Ch. A.3 - In Exercises 21-30, add and subtract as indicated....Ch. A.3 - In Exercises 21-30, add and subtract as indicated....Ch. A.3 - In Exercises 21-30, add and subtract as indicated....Ch. A.3 - Prob. 31ECh. A.3 - Prob. 32ECh. A.3 - Prob. 33ECh. A.3 - Prob. 34ECh. A.3 - Prob. 35ECh. A.3 - Prob. 36ECh. A.3 - Prob. 37ECh. A.3 - Prob. 38ECh. A.3 - Prob. 39ECh. A.3 - Prob. 40ECh. A.3 - Prob. 41ECh. A.3 - Prob. 42ECh. A.3 - Prob. 43ECh. A.3 - Prob. 44ECh. A.3 - Prob. 45ECh. A.3 - Prob. 46ECh. A.3 - In Exercises 37-52, perform the indicated...Ch. A.3 - Prob. 48ECh. A.3 - Prob. 49ECh. A.3 - Prob. 50ECh. A.3 - Prob. 51ECh. A.3 - Prob. 52ECh. A.3 - Prob. 53ECh. A.3 - Prob. 54ECh. A.3 - In Exercises 53-66; perform the indicated...Ch. A.3 - In Exercises 53-66; perform the indicated...Ch. A.3 - Prob. 57ECh. A.3 -
In Exercises 53-66, perform the indicated...Ch. A.3 -
In Exercises 53-66, perform the indicated...Ch. A.3 -
In Exercises 53-66, perform the indicated...Ch. A.3 -
In Exercises 53-66, perform the indicated...Ch. A.3 -
In Exercises 53-66, perform the indicated...Ch. A.3 -
In Exercises 53-66, perform the indicated...Ch. A.3 -
In Exercises 53-66, perform the indicated...Ch. A.3 -
In Exercises 53-66, perform the indicated...Ch. A.3 - Prob. 66ECh. A.3 - Prob. 67ECh. A.3 - Toy box height. The height (in feet) of an open...Ch. A.3 - Diluting a mixture. A 100-gallon mixture of citrus...Ch. A.3 - Prob. 70ECh. A.3 - Prob. 71ECh. A.3 - Prob. 72E
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