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Smith - Mathematics: Its Power and Utility 10/e (Homework)

James Finch

Math - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 6 / 18

Due : Sunday, January 27, 2030 00:00 EST

Last Saved : n/a Saving...  ()

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Question
Points
1 2 3 4 5 6 7 8 9
4/4 2/2 0/2 –/5 –/1 –/1 –/1 –/1 –/1
Total
6/18 (33.3%)

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    Create your course assignments by selecting questions from our bank of over 600 end-of-section exercises, as well as enhanced interactive examples with videos.

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    In this assignment we present several textbook question types found in Chapter 3 on Introduction to Algebra in Mathematics: Its Power and Utility 10/e by Karl J. Smith published by Brooks/Cole. This demo assignment allows many submissions and allows you to try another version of the same question for practice wherever the problem has randomized values.

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For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer.

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1. 4/4 points  |  Previous Answers SmithPow10 3.1.023. My Notes
Question Part
Points
Submissions Used
1 2 3 4
1/1 1/1 1/1 1/1
2/50 1/50 1/50 1/50
Total
4/4
 
Identify each polynomial as a monomial, binomial, or trinomial. Also, give the degree of the polynomial.
(a)    
x3 + 8
The polynomial is a Correct: Your answer is correct. of degree Correct: Your answer is correct. .

(b)    
x2 − 6
The polynomial is a Correct: Your answer is correct. of degree Correct: Your answer is correct. .
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2. 2/2 points  |  Previous Answers SmithPow10 3.2.019. My Notes
Question Part
Points
Submissions Used
1 2
1/1 1/1
1/50 1/50
Total
2/2
 
Combine similar terms.
(a)    
−5z + z

−4z
Correct: Your answer is correct.

(b)    
2x − 5x

−3x
Correct: Your answer is correct.

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3. 0/2 points  |  Previous Answers SmithPow10 3.3.050. My Notes
Question Part
Points
Submissions Used
1 2
0/1 0/1
4/50 4/50
Total
0/2
 
Simplify the algebraic expressions.
(a)    
(2x + 1)2

2x2+2
Incorrect: Your answer is incorrect.

(b)    
(7x − 2)2

9x2
Incorrect: Your answer is incorrect.

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4. –/5 points SmithPow10 3.4.049. My Notes
Question Part
Points
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1 2 3 4 5
–/1 –/1 –/1 –/1 –/1
0/50 0/50 0/50 0/50 0/50
Total
–/5
 
A molecule of C2H6 consists of two carbon atoms and six hydrogen atoms, as shown in the figure.
(a) How many of each atom do x molecules contain?
carbon atoms
hydrogen atoms

(b) Write the total number of atoms in x molecules as a sum.
atoms

(c) How many atoms does one molecule contain?
atoms

(d) How many atoms do y molecules contain?
atoms
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5. –/1 points SmithPow10 3.5.036a.CMI. My Notes
Question Part
Points
Submissions Used
1
–/1
0/50
Total
–/1
 
Solve the equation.
8(x + 1) = 7(x − 1)
x =

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6. –/1 points SmithPow10 3.5.049. My Notes
Question Part
Points
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1
–/1
0/50
Total
–/1
 
Currency exchange rates fluctuate daily, but we will use the table below as the foreign currency exchange rate.
Currency Exchange Rates
 
Country Currency Rate
Australia Dollar 0.99970
United Kingdom Pound 0.63181
Canada Dollar 0.98680
European Union Euro 0.74831
Japan Yen 82.7158
Mexico Peso 12.0917
Switzerland Franc 0.96236
To convert from a foreign currency into dollars, use the following equation:
NUMBER OF
U.S. DOLLARS
EXCHANGE
RATE
 = 
AMOUNT OF FOREIGN
CURRENCY
For example, if a ring costs 300 euros in Germany, the equivalent amount in U.S. dollars is found as follows:
NUMBER OF
U.S. DOLLARS
(0.74831)		 = 300
 
NUMBER OF
U.S. DOLLARS
 = 400.90

                    Divide both sides by 0.74831. (by calculator)
The ring costs $400.90 in U.S. dollars. Note that when working with money, we round to the nearest cent.

Find the value of the item expressed in U.S. dollars, assuming that the given prices are in local currency. (Round your answer to the nearest cent.)
A German Black Forest clock is selling for 508 euros.
$

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7. –/1 points SmithPow10 3.6.047. My Notes
Question Part
Points
Submissions Used
1
–/1
0/50
Total
–/1
 
Find the miles per gallon to the nearest tenth of a gallon.
mpg
Odometer    
Start 		Odometer    
Finish 		Gallons    
Used
78279 78659 11.3

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8. –/1 points SmithPow10 3.7.026b.CMI. My Notes
Question Part
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1
–/1
0/50
Total
–/1
 
Graph the solution for the inequality.
x ≥ −125
Use the tools to enter your answer.
Created with Raphaël 2.1.0-150-140-130-120-110-100-90-80-70-60-50
Created with Raphaël 2.1.0

NO SOLUTION

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9. –/1 points SmithPow10 11.3.041.CMI. My Notes
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1
–/1
0/50
Total
–/1
 
Graph the line.
x + 4y = 8
No Solution
Help
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