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Aufmann et al-Beg Algebra with App (New Model) 7/e (Homework)

James Finch

Math - Developmental, Fall 2010

Instructor: Dr. Friendly

Current Score: 19/25

Due: Wednesday, August 18, 2010 23:10 EDT

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Question
Points
1 2 3 4 5 6 7 8 9 10 11
2 1 1 7 1 4 0/1 0/2 0/3 2 1
Total
19/25

Description

Here are some textbook questions from Beginning Algebra with Applications (New Model) 7/e by Richard N. Aufmann, Vernon C. Barker, Joanne S. Lockwood published by Brooks/Cole. Click here for a list of all of the questions coded in WebAssign.


Instructions

This demo assignment allows many submissions and allows you to try another version of the same question for practice.



1. 2/2 points All Submissions Notes Question: AufBAlgApR7 1.1.094.
Question part
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2/2
 
A meteorologist may report a wind-chill temperature. This is the equivalent temperature, including the effects of wind and temperature, that a person would feel in calm air conditions. The table below gives the wind-chill temperature for various wind speeds and temperatures. For instance, when the temperature is 5°F and the wind is blowing at 15 mph, the wind-chill temperature is -13°F.
(a) Which of the following weather conditions feels warmer?
    

Your answer is correct.

 
(b) Which of the following weather conditions feels warmer?
    

Your answer is correct.



2. 1/1 points All Submissions Notes Question: AufBAlgApR7 1.2.152.
Question part
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Submissions
1
1
1/50
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1/1
 
The table below shows the average temperatures at different cruising altitudes for airplanes. What is the difference between the average temperature at 20,000 ft and the average temperature at 40,000 ft?
Enter an exact number.
Your answer is correct. °F


3. 1/1 points All Submissions Notes Question: AufBAlgApR7 1.3.182.
Question part
Points
Submissions
1
1
11/50
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1/1
 
Classify the following number. List all that apply.
−
4
45

Your answer is correct.




4. 7/7 points All Submissions Notes Question: AufBAlgApR7 1.4.002.
Question part
Points
Submissions
1 2 3 4 5 6 7
1 1 1 1 1 1 1
1/50 1/50 1/50 1/50 1/50 1/50 1/50
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7/7
 
The exponential expression 23 is read "the
Answer is not case sensitive.
Your answer is correct. power of
Answer is not case sensitive.
Your answer is correct." or "2
Answer is not case sensitive.
Your answer is correct.." To evaluate 23, find the product (
Enter an exact number.
Your answer is correct.)(
Enter an exact number.
Your answer is correct.)(
Enter an exact number.
Your answer is correct.) =
Enter an exact number.
Your answer is correct..

5. 1/1 points All Submissions Notes Question: AufBAlgApR7 1.5.020.
Question part
Points
Submissions
1
1
1/50
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1/1
 
Find mangleAOB given x = 86° and y = 36°.
Enter an exact number.
Your answer is correct. °


6. 4/4 points All Submissions Notes Question: AufBAlgApR7 2.2.148.
Question part
Points
Submissions
1 2 3 4
1 1 1 1
1/50 1/50 1/50 1/50
Total
4/4
 
When simplifying 3(3a − 8) + 2(a − 3), the first step is to use the Distributive Property to remove parentheses:
3(3a − 8) + 2(a − 3) =
Enter an exact number.
Your answer is correct.a −
Enter an exact number.
Your answer is correct. +
Enter an exact number.
Your answer is correct.a −
Enter an exact number.
Your answer is correct.


7. –/1 points Notes Question: AufBAlgApR7 2.2.158.
Question part
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1
0/1
0/50
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0/1
 
Simplify.
18(y - 3) + 2(6 - 2y)


8. –/2 points Notes Question: AufBAlgApR7 2.3.064.
Question part
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1 2
0/1 0/1
0/50 0/50
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0/2
 
Translate into a variable expression. Then simplify the expression.
a number s added to the product of five and the number
(variable expression)
(simplified)

9. 0/3 points All Submissions Notes Question: AufBAlgApR7 2.3.096.SBS.
Question part
Points
Submissions
1 2 3
0/1 0/1 0/1
2/50 0/50 0/50
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0/3
 
Translate into a variable expression. Then simplify the expression.
a number y plus seven added to the difference between eleven and twice the number

STEP 1: Identify the words that indicate mathematical operations. (Select all that apply.)

Your answer is incorrect.
STEP 2: Use the operations to write the variable expression.


STEP 3: Simplify the expression.


10. 2/2 points All Submissions Notes Question: AufBAlgApR7 2.3.104.
Question part
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1/50 1/50
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2/2
 
An electrician's bill is $190 for materials and $30 an hour for labor. To express the total amount of the bill in terms of the number of hours of labor, let h be the number of hours of labor. Then the cost of the labor is <math><mrow><mn>30</mn><mi>h</mi></mrow></math> Your answer is correct. dollars, so the total amount for the materials and labor is <math><mrow><mn>190</mn><mo>+</mo><mn>30</mn><mi>h</mi></mrow></math> Your answer is correct. dollars.

11. 1/1 points All Submissions Notes Question: AufBAlgApR7 5.6.005.
Question part
Points
Submissions
1
1
1/50
Total
1/1
 
Graph the solution set.
y > 
1
2
x - 1

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