Mathematical Ideas (13th Edition) - Standalone book
13th Edition
ISBN: 9780321977076
Author: Charles D. Miller, Vern E. Heeren, John Hornsby, Christopher Heeren
Publisher: PEARSON
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Textbook Question
Chapter 5.1, Problem 32E
Here is a divisibility test for 7.
(a)Double the last digit of the given number, and subtract this value from the given number with the last digit omitted.
(b)Repeat the process of part (a) as many times as necessary until it is clear whether the number obtained is divisible by 7.
(c)If the final number obtained is divisible by 7, then the given number also is divisible by 7. If the final number is not divisible by 7, then neither is the given number.
Use this divisibility test to determine whether each number is divisible by 7.
548.184
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In Gallup's Annual Consumption Habits Poll, telephone interviews were conducted for a
random sample of 1014 adults aged 18 and over. One of the questions was, "How many
cups of coffee, if any, do you drink on an average day?" The following table shows the
results obtained (Gallup website, August 6, 2012).
Number of Cups
per Day
0
1
2
3
4 or more
Number of
Responses
365
264
193
91
101
Define a random variable x = number of cups of coffee consumed on an average day. Let
x=4 represent four or more cups.
a. Develop a probability distribution for x.
b. Compute the expected value of x.
c. Compute the variance of x.
d. Suppose we are only interested in adults who drink at least one cup of coffee on an
average day. For this group, let y = the number of cups of coffee consumed on an
average day. Compute the expected value of y and compare it to the expected value of x.
Ten major college football bowl games were played in January 2010, with the University
of Alabama beating the University of Texas 37 to 21 to become the national champion
of college football. The results of the 10 bowl games follow (USA Today, January 8, 2010).
Bowl Game
Score
Outback
Gator
Auburn 38 Northwestern 35
Florida State 33 West Virginia 21
Capital One
Penn State 19 LSU 17
Rose
Ohio State 26 Oregon 17
Florida 51 Cincinnati 24
Sugar
Cotton
Alamo
Fiesta
Mississippi State 21 Oklahoma State 7
Texas Tech 41 Michigan State 31
Boise State 17 TCU 10
Orange
Iowa 24 Georgia Tech 14
Championship
Alabama 37 Texas 21
Predicted
Point Margin
Actual
Point Margin
5
3
1
12
3
-2
14
3
9
-4
-3
4
229740706
14
10
10
16
The predicted winning point margin was based on Las Vegas betting odds approximately
one week before the bowl games were played. For example, Auburn was predicted to beat
Northwestern in the Outback Bowl by five points. The actual winning point margin for Au-
burn was three points. A…
Chapter 5 Solutions
Mathematical Ideas (13th Edition) - Standalone book
Ch. 5.1 - Decide whether each statement is true or false
1....Ch. 5.1 - Decide whether each statement is true or false. If...Ch. 5.1 - Decide whether each statement is true or false....Ch. 5.1 - Prob. 4ECh. 5.1 - Prob. 5ECh. 5.1 - Prob. 6ECh. 5.1 - Decide whether each statement is true or false.
7....Ch. 5.1 - Prob. 8ECh. 5.1 - Prob. 9ECh. 5.1 - Find all natural number factors of each...
Ch. 5.1 - Find all natural number factors of each number. 28Ch. 5.1 - Find all natural number factors of each number. 72Ch. 5.1 - Use divisibility tests to decide whether the given...Ch. 5.1 - Use divisibility tests to decide whether the given...Ch. 5.1 - Use divisibility tests to decide whether the given...Ch. 5.1 - Prob. 16ECh. 5.1 - (a) In constructing the Sieve of Eratosthenes for...Ch. 5.1 - (a) Continue the Sieve of Eratosthenes in Table 1...Ch. 5.1 - In your list for Exercise 18(a). consider the six...Ch. 5.1 - Prob. 20ECh. 5.1 - Prob. 21ECh. 5.1 - Prob. 22ECh. 5.1 - Prob. 23ECh. 5.1 - Prob. 24ECh. 5.1 - Prob. 25ECh. 5.1 - Prob. 26ECh. 5.1 - Prob. 27ECh. 5.1 - Find the prime factorization of each composite...Ch. 5.1 - Prob. 29ECh. 5.1 - Prob. 30ECh. 5.1 - Here is a divisibility test for 7.
(a) Double the...Ch. 5.1 - Here is a divisibility test for 7. (a)Double the...Ch. 5.1 - Prob. 33ECh. 5.1 - Prob. 34ECh. 5.1 - Here is a divisibility test for 11. (a) Starting...Ch. 5.1 - Prob. 36ECh. 5.1 - Here is a divisibility test for 11.
(a) Starting...Ch. 5.1 - Prob. 38ECh. 5.1 - 39. Consider the divisibility test for the...Ch. 5.1 - 40. Give two factorizations of the number 75 that...Ch. 5.1 - Prob. 41ECh. 5.1 - Determine all possible digit replacements for x so...Ch. 5.1 - Determine all possible digit replacements for x so...Ch. 5.1 - Determine all possible digit replacements for x so...Ch. 5.1 - Prob. 45ECh. 5.1 - Prob. 46ECh. 5.1 - Prob. 47ECh. 5.1 - Prob. 48ECh. 5.1 - Prob. 49ECh. 5.1 - Prob. 50ECh. 5.1 - Leap years occur when the year number is divisible...Ch. 5.1 - Prob. 52ECh. 5.1 - Prob. 53ECh. 5.1 - Leap years occur when the year number is divisible...Ch. 5.1 - Prob. 55ECh. 5.1 - Prob. 56ECh. 5.1 - Prob. 57ECh. 5.1 - 58. Choose any 6-digit number consisting of three...Ch. 5.1 - One of the authors has three sons who were born....Ch. 5.1 -
Ore of the authors has three sons who were born,...Ch. 5.1 - Prob. 61ECh. 5.1 - Prob. 62ECh. 5.2 - In Exercises 1-6 decide whether each statement is...Ch. 5.2 - In Exercises 1-6 decide whether each statement is...Ch. 5.2 - In Exercises 1-6 decide whether each statement is...Ch. 5.2 - Prob. 4ECh. 5.2 - In Exercises 1-6 decide whether each statement is...Ch. 5.2 - Prob. 6ECh. 5.2 - Prob. 7ECh. 5.2 - Prob. 8ECh. 5.2 - Prob. 9ECh. 5.2 - Prob. 10ECh. 5.2 - Prob. 11ECh. 5.2 - Prob. 12ECh. 5.2 - Prob. 13ECh. 5.2 - Prob. 14ECh. 5.2 - 15. (a) Evaluate the Fermat number for .
(b) In...Ch. 5.2 - 16. (a) Verify the value given in the text for the...Ch. 5.2 - Prob. 17ECh. 5.2 - Prob. 18ECh. 5.2 - 19. Why do you suppose it normally takes up to a...Ch. 5.2 - Prob. 20ECh. 5.2 - Prob. 21ECh. 5.2 - 22. Explain n your own words the proof by Euclid...Ch. 5.2 - 23. For the composite number , find
Ch. 5.2 - Prob. 24ECh. 5.2 - Prob. 25ECh. 5.2 - Prob. 26ECh. 5.2 - Prob. 27ECh. 5.2 - Prob. 28ECh. 5.2 - Explain why large prime numbers are important in...Ch. 5.2 - 30. Describe the difference between Mersenne...Ch. 5.3 - In Exercises 1-10 decide whether each statement is...Ch. 5.3 - Prob. 2ECh. 5.3 - In Exercises 1-10 decide whether each statement is...Ch. 5.3 - In Exercises 1-10 decide whether each statement is...Ch. 5.3 - Prob. 5ECh. 5.3 - In Exercises 1-10 decide whether each statement is...Ch. 5.3 - In Exercises 1-10 decide whether each statement is...Ch. 5.3 - Prob. 8ECh. 5.3 - Prob. 9ECh. 5.3 - Prob. 10ECh. 5.3 - Prob. 11ECh. 5.3 - Prob. 12ECh. 5.3 - Prob. 13ECh. 5.3 - Prob. 14ECh. 5.3 - It has been proved that the reciprocals of all the...Ch. 5.3 - Prob. 16ECh. 5.3 - Prob. 17ECh. 5.3 - Prob. 18ECh. 5.3 - Prob. 19ECh. 5.3 - Prob. 20ECh. 5.3 - 21. There are four abundant numbers between 1 and...Ch. 5.3 - Prob. 22ECh. 5.3 - Prob. 23ECh. 5.3 - Prob. 24ECh. 5.3 - 25. The proper divisors of 1184 are 1.2. 4. 8, 16,...Ch. 5.3 - Prob. 26ECh. 5.3 - Prob. 27ECh. 5.3 - Prob. 28ECh. 5.3 - Prob. 29ECh. 5.3 - Prob. 30ECh. 5.3 - Prob. 31ECh. 5.3 - Prob. 32ECh. 5.3 - Prob. 33ECh. 5.3 - Prob. 34ECh. 5.3 - Prob. 35ECh. 5.3 - Prob. 36ECh. 5.3 - Prob. 37ECh. 5.3 - Prob. 38ECh. 5.3 - The first four perfect numbers were identified in...Ch. 5.3 - Prob. 40ECh. 5.3 - Prob. 41ECh. 5.3 - Prob. 42ECh. 5.3 - Prob. 43ECh. 5.3 - Prob. 44ECh. 5.3 - Prob. 45ECh. 5.3 - Prob. 46ECh. 5.3 - 47. Explain why the primorial formula does not...Ch. 5.3 - Prob. 48ECh. 5.3 - 49. Choose the correct completion: The primorial...Ch. 5.3 - Prob. 50ECh. 5.3 - Prob. 51ECh. 5.3 - Prob. 52ECh. 5.3 - Prob. 53ECh. 5.3 - Prob. 54ECh. 5.3 - Prob. 55ECh. 5.3 - Prob. 56ECh. 5.3 - Prob. 57ECh. 5.3 - Prob. 58ECh. 5.3 - Prob. 59ECh. 5.3 - Prob. 60ECh. 5.3 - Prob. 61ECh. 5.3 - Prob. 62ECh. 5.3 - Prob. 63ECh. 5.3 - Prob. 64ECh. 5.3 - Prob. 65ECh. 5.3 - Prob. 66ECh. 5.3 - Prob. 67ECh. 5.3 - Prob. 68ECh. 5.4 - Decide whether each statement is true or false. No...Ch. 5.4 - Decide whether each statement is true or false.
2....Ch. 5.4 - Decide whether each statement is true or false. If...Ch. 5.4 - Decide whether each statement is true or false.
4....Ch. 5.4 - Decide whether each statement is true or false....Ch. 5.4 - Decide whether each statement is true or false....Ch. 5.4 - Decide whether each statement is true or false....Ch. 5.4 - Decide whether each statement is true or false....Ch. 5.4 - Decide whether each statement is true or false.
9....Ch. 5.4 - Decide whether each statement is true or false....Ch. 5.4 - Use the prime factors method to find the greatest...Ch. 5.4 - Use the prime factors method to find the greatest...Ch. 5.4 - Use the prime factors method to find the greatest...Ch. 5.4 - Use the prime factors method to find the greatest...Ch. 5.4 - Use the prime factors method to find the greatest...Ch. 5.4 - Use the prime factors method to find the greatest...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the Euclidean algorithm to find the greatest...Ch. 5.4 - Use the Euclidean algorithm to find the greatest...Ch. 5.4 - Use the Euclidean algorithm to find the greatest...Ch. 5.4 - Use the Euclidean algorithm to find the greatest...Ch. 5.4 - Use the Euclidean algorithm to find the greatest...Ch. 5.4 - Use the Euclidean algorithm to find the greatest...Ch. 5.4 - Use the prime factors method to find the least...Ch. 5.4 - Use the prime factors method to find the least...Ch. 5.4 - Use the prime factors method to find the least...Ch. 5.4 - Use the prime factors method to find the least...Ch. 5.4 - Use the prime factors method to find the least...Ch. 5.4 - Use the prime factors method to find the least...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the method of dividing by prime factors to...Ch. 5.4 - Use the formula given in the text on page 203and...Ch. 5.4 - Use the formula given in the text on page 203 and...Ch. 5.4 - Use the formula given in the text on page 203 and...Ch. 5.4 - Use the formula given in the text on page 203 and...Ch. 5.4 - Use the formula given in the text on page 203 and...Ch. 5.4 - Use the formula given in the text on page 203 and...Ch. 5.4 - Explain in your own words how to find the greatest...Ch. 5.4 - 48, Explain in your own words how to find the...Ch. 5.4 - If p. q, and r and different primes, and a. b, and...Ch. 5.4 - Find (a) the greatest common factor and (b) the...Ch. 5.4 - Prob. 51ECh. 5.4 - Prob. 52ECh. 5.4 - Prob. 53ECh. 5.4 - It is possible to extend the Euclidean algorithm...Ch. 5.4 - Prob. 55ECh. 5.4 - Suppose that the least common multiple of p and q...Ch. 5.4 - Prob. 57ECh. 5.4 - Prob. 58ECh. 5.4 - Prob. 59ECh. 5.4 - Refer to Examples 9 and 10 to solve each problem....Ch. 5.4 - Refer to Examples 9 and 10 to solve each...Ch. 5.4 - Refer to Examples 9 and 10 to solve each...Ch. 5.4 - Prob. 63ECh. 5.4 - Refer to Examples 9 and 10 to solve each problem....Ch. 5.5 - Answer each question concerning the Fibonacci...Ch. 5.5 - Prob. 2ECh. 5.5 - Prob. 3ECh. 5.5 - Prob. 4ECh. 5.5 - Prob. 5ECh. 5.5 - Prob. 6ECh. 5.5 - Prob. 7ECh. 5.5 - Prob. 8ECh. 5.5 - Prob. 9ECh. 5.5 - Prob. 10ECh. 5.5 - Prob. 11ECh. 5.5 - Prob. 12ECh. 5.5 - Prob. 13ECh. 5.5 - Prob. 14ECh. 5.5 - Prob. 15ECh. 5.5 - It has been shown that if m divides n, then Fm is...Ch. 5.5 - Prob. 17ECh. 5.5 - Prob. 18ECh. 5.5 - Prob. 19ECh. 5.5 - Prob. 20ECh. 5.5 - Prob. 21ECh. 5.5 - Prob. 22ECh. 5.5 - Prob. 23ECh. 5.5 - Prob. 24ECh. 5.5 - Prob. 25ECh. 5.5 - Prob. 26ECh. 5.5 - Prob. 27ECh. 5.5 - Recall (lie Pythagorean theorem from geometry: If...Ch. 5.5 - Recall (lie Pythagorean theorem from geometry: If...Ch. 5.5 - Prob. 30ECh. 5.5 - Prob. 31ECh. 5.5 - Prob. 32ECh. 5.5 - Prob. 33ECh. 5.5 - Prob. 34ECh. 5.5 - Prob. 35ECh. 5.5 - Prob. 36ECh. 5 - In Exercises 1-6, decide whether each statement is...Ch. 5 - In Exercises 1-6, decide whether each statement is...Ch. 5 - Prob. 3TCh. 5 - In Exercises 1-6, decide whether each statement is...Ch. 5 - Prob. 5TCh. 5 - Prob. 6TCh. 5 - Use divisibility tests to determine whether the...Ch. 5 - Prob. 8TCh. 5 - Prob. 9TCh. 5 - Prob. 10TCh. 5 - Prob. 11TCh. 5 - Prob. 12TCh. 5 - Give a pair of twin primes between 60 and 80.Ch. 5 - Prob. 14TCh. 5 - Prob. 15TCh. 5 - Prob. 16TCh. 5 - Prob. 17TCh. 5 - Prob. 18TCh. 5 - Prob. 19TCh. 5 - Prob. 20TCh. 5 - 21. Choose any term after the first in the...Ch. 5 - 22. Which one of the following is the exact value...
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