WebAssign

Saturday, November 21, 2009 05:06 EST

Logged in as demo@demo

Logout

Larson and Hostetler - Elementary Algebra 5/e (Homework)

James Finch

Math - Developmental, Fall 2010

Instructor: Dr. Friendly

Current Score: 2/16

Due: Wednesday, October 13, 2010 23:00 EDT

About this Assignment

Ask Your TeacherpopUp 

Extension RequestspopUp 

Question
Points
1 2 3 4 5 6 7 8 9 10 11
0/1 0/1 0/1 0/2 0/2 2 0/1 0/1 0/2 0/2 0/1
Total
2/16

Description

Here are some textbook questions from Elementary Algebra 5/e by Ron Larson and Robert P. Hostetler 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. 0/1 points All Submissions Notes Question: LarElemAlg5 2.1.030.
Question part
Points
Submissions
1
0/1
2/50
Total
0/1
 
Identify the coefficient of the term. See Example 3.
− 
7x
8
 
Enter an exact number as an integer, fraction, or decimal.
Your answer is incorrect.

Need Help? Read It


2. –/1 points Notes Question: LarElemAlg5 2.1.047.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 
Expand the expression as a product of factors. See Example 4.
(x + y)3

Need Help? Read It Practice It


3. 0/1 points All Submissions Notes Question: LarElemAlg5 2.1.059.MI.
Question part
Points
Submissions
1 2 3 4 5
0/1 0 0 0 0
1/50 0/50 0/50 0/50 0/50
Total
0/1
 
Rewrite the product in exponential form.
–7 · (x – y) · (x – y) · (x – y) · (x – y) · (–7)
<math><mrow><mo>-</mo><msup><mn>7</mn><mn>2</mn></msup><msup><mfenced close=")" open="("><mi>x</mi><mo>-</mo><mi>y</mi></mfenced><mn>4</mn></msup></mrow></math> Your answer is incorrect.


Need Help? Read It Master It


4. –/2 points Notes Question: LarElemAlg5 2.1.087.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
An advertisement for a new pair of basketball shoes claims that the shoes will help you jump two inches higher than without shoes.
(a) Let x represent the height (in inches) jumped without shoes. Write an expression that represents the height of a jump while wearing the new shoes.


(b) You can jump 24 inches without shoes. How high can you jump while wearing the new shoes?
Enter an exact number.
 in

Need Help? Read It Practice It


5. –/2 points Notes Question: LarElemAlg5 2.1.092.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
Write an expression for the area of the figure. Then evaluate the expression for the given value of the variable. See Example 9.
x = 7
area
area if x = 7     
Enter an exact number.
 square units


Need Help? Read It Watch It


6. 2/2 points All Submissions Notes Question: LarElemAlg5 2.2.034.
Question part
Points
Submissions
1 2
1 1
1/50 1/50
Total
2/2
 
Complete the statement. Then state the property of algebra that you used. See Example 1.
–5 + (2 + 5y) = ( <math><mrow><mo>-</mo><mn>5</mn><mo>+</mo><mn>2</mn></mrow></math> Your answer is correct.) + 5y

    

Your answer is correct.


Need Help? Read It Watch It Practice It


7. –/1 points Notes Question: LarElemAlg5 2.2.120.MI.
Question part
Points
Submissions
1 2 3 4 5 6 7 8
0/1 0 0 0 0 0 0 0
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
0/1
 
Simplify the expression. See Examples 7 and 8.
(2r2s3)(2rs)



Need Help? Read It Watch It Practice It Master It


8. –/1 points Notes Question: LarElemAlg5 2.3.004.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 
Match the verbal phrase with the correct algebraic expression. See Examples 2 and 3.
Seventeen less than the product of 3 and x
    


Need Help? Read It Practice It


9. –/2 points Notes Question: LarElemAlg5 2.4.012.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
Determine whether the value of x is a solution of the equation. See Examples 1 and 2.
x2 = 63 – 2x
(a)     x = 7
    



(b)     x = -9
    


Need Help? Read It Practice It


10. –/2 points Notes Question: LarElemAlg5 2.4.059.MI.
Question part
Points
Submissions
1 2 3 4 5 6 7
0/1 0/1 0 0 0 0 0
0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
0/2
 
Simplify the expression. State the units of the simplified value.
 
3 feet
second
 · 
20 seconds
minute
 · (50 minutes)
Enter an exact number.

Need Help? Read It Master It


11. –/1 points Notes Question: LarElemAlg5 2.4.075.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 
Write an algebraic equation. Do not solve the equation. See Examples 4, 5, and 6.
You hear thunder 4 seconds after seeing lightning. The speed of sound is 1100 feet per second. How far away is the lightning? (Let d represent the unknown quantity.)

Need Help? Read It Practice It

Home My Assignments Ask Your TeacherpopUp Extension RequestpopUp