Section 4.1 Homework
1) For A = cfw_a, u, p, l, m and B = cfw_21, 32, 5
a) How many elements are in AB? 5 x 3 = 15 elements
b) List the elements of AB.
This problem is similar to example 4 and problems 4.1.54.1.7.
1
Section 4.2 Homework
1) Let A = +, the
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3.1
6.
Suppose a and b are real numbers. Prove that if 0< a<b then
1 1
<
b a .
Given: a and b are real numbers
Assume: 0<a<b
Show:
1 1
<
b a
Proof: Using the assumption that 0< a<b , we know that a< b . We will now
perform
algebraic manipu
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2.1
6. (a) x yP( x , y)
This statement means that there exists at least one person who is a parent of everyone.
Since it is physically impossible for somebody to be a parent of everyone, this statement
is FALSE.
(b) x yP( x , y)
This state
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1.3
4. (a)
cfw_ x
2
| x N\0
(b)
x
cfw_ 2 | x N
(c)
cfw_x N| 10 x 19
1.4
6. (a) (A
B)\C = (A\C)
(B\C)
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(b) A
(B\C) = (A
B) \ (C\A)
11. (a)
(A
B)\C is a subset of A
(B\C).
1.5
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3. (a)
Let R stand for "It is rain
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1.1
2. (a)
Let J stand for "John is telling the truth".
Let B stand for "Bill is telling the truth".
(JB) (JB)
(b)
Let F stand for "I'll have fish".
Let C stand for "I'll have chicken".
Let M stand for "I'll have
Percent Reflection
1. Al has made two errors. First, he should use the same units of measurement for the two
shadows. His is measured in inches while the tree's shadow is measured in feet. Second, he set up
his proportion incorrectly. Al is trying to make
Probability Reflection
1. I would tell her that in independent events, the outcome of one event would not affect the
result of the other event. For example, whether or not one pulls a red marble out of a bag will not
affect the likeliness of getting a hea
Statistics Reflection
1. In the real world, I mostly see bar graphs. However, I often see many other different types of
graphs, too. Therefore, students should be taught how to accurately interpret all different types of
graphs. In my opinion, companies o
Module Six Homework
General:
Before beginning this homework, be sure to read the textbook readings and the
module notes.
For additional practice, each homework problem has some ungraded examples
and sample problems from the text that you can review, and
Appendix A Homework
1) The following function written in pseudocode accepts INCOME as a variable and
outputs the TAX corresponding to that income.
FUNCTION TAX (INCOME)
1. IF (INCOME > 60000) THEN
a. TAXDUE 15000
2. ELSE
a. IF (INCOME > 30000) THEN
1. TAX
Section 1.1 Homework
1) Suppose C = cfw_red, blue, gray, orange. For a) and b) below, fill in the value(s) that
makes the statement true (Note: More than one answer is possible). This problem is
similar to example 1 and problems 1.1.1 and 1.1.2.
a) _red_
Module Two Homework
General:
Before beginning this homework, be sure to read the textbook readings and the
module notes.
For additional practice, each homework problem has some ungraded examples
and sample problems from the text that you can review, and
Section 3.1 Homework
1) Suppose a company will select 3 people from a collection of 12 applicants to serve as
a regional manager, an assistant regional manager, and an assistant to the regional
manager. In how many ways can the selection be made? This pro
Dear Teachers,
Welcome to MatheMagic!
MatheMagic! is a real theatrical magic show with music, costumes, comedy, and illusions. In this fun format,
kids (unknowingly) practice classroom skills, i.e., math facts and problem-solving.
In the course of the sho