Chapter 1 Answers - · PDF fileMartin-Gay Prealgebra Edition 5 381 Chapter 1 1.2 1. words 2....

Martin-Gay Prealgebra Edition 5 381

Chapter 1 1.2 1. words 2. standard form 3. expanded form 4. period 5. place value 6. whole 7. ten 8. thousand 9. ten thousand 10. four hundred three 11. twenty-three

thousand, eight hundred thirty-one

12. sixteen million, three hundred ninety thousand, five hundred sixty-nine

13. thirteen thousand, one hundred twenty-six

14. one thousand, eight hundred eighty-three

15. 9816 16. 3,255,012 17. 10,000 + 3000 +

200 + 9 18. 3000 + 900 + 20 + 1 19. 10,000,000 +

2,000,000 + 300,000 + 9000 + 100 + 40 + 1

20. women 21. 135 22. 176 23. 9999 24. 9876 25. no, two hundred six

Answers 1.3 1. addend, sum 2. perimeter 3. minuend, subtrahend,

difference 4. commutative 5. associative 6. 27 7. 6203 8. 798 9. 29 10. 1109 11. 12,899 12. 42 inches 13. 34 yards 14. 2186 15. 96 16. 56,703,038 17. $389 18. car payment 19. $515 20. $173 21. 89, 184 minuend, 95

subtrahend, 89 difference

22. 5

1.4 1. exact, estimate 2. Rounding 3. 400 4. 1000 5. 70 6. 130,000 7. 4390; 4400; 4000 8. 123,490; 123,500;

123,000 9. 28,950; 29,000;

29,000 10. 148,820; 148,800;

149,000 11. $250,000 12. 180 13. 190 14. 1200 15. 0 16. 1860 miles 17. $1180 18. answers will vary 19a. 2650 b. 2749 20. 340 feet

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Prentice Hall


Chapter 1 1.5 1. product, factor 2. commutative 3. associative 4. area 5. distributive 6. 17 7. 23 8. 0 9. 0 10. 3 ⋅ 5 + 3 ⋅ 8 11. 12 ⋅ 9 + 12 ⋅ 4 12. 81 13. 3856 14. 3612 15. 1,157,958 16. 21 square inches 17. 875 square feet 18. 1394 19. 1242 20. 240 calories 21. $3024 22. 11,640 square feet 23. 6400 24. 2 + 2 + 2 + 2 + 2

Answers 1.6 1. undefined 2. quotient, dividend,

divisor 3. 6 4. 9 5. 9 6. 0 7. 42 8. 1 9. 0 10. undefined 11. 28 12. 234 13. 75 14. 14 15. 18 R 2 16. 321 17. 62 R 8 18. 115 R 5 19. 583 R 8 20. 8 21. $185,000 22. yes, 3 yards left

over 23. 24 24. 8 feet 25. answers will vary

(cont’d) 1.7 1. base, exponent 2. 63 3. 412 4. 33 532 ⋅⋅ 5. 8 6. 243 7. 12 8. 54 9. 36 10. 192 11. 14 12. 16 13. 11 14. 6 15. 12 16. 28 17. 104 18. 61 19. 3 20. 2 21. 10 22. undefined 23. 100 square feet 24. 256 square feet 25. 70 inches



Chapter 1 1.8 1. variable 2. equation, expression 3. variable 4. solution 5. 14 6. 47 7. 38 8. 1 9. 5 10. 121 11. 41 12. 126 13. 81 14. yes 15. 4 + x 16. 8 − x 17. x − 7 18. 6x 19. x − 5 20. no, x − 7 and 7 − x

are not the same

Answers Test A 1. eight hundred

seventy-six thousand, one hundred twenty-four

2. 72,008 3. 226 4. 105 5. 9300 6. 133 R 26 7. 432 8. 15 9. 0 10. undefined 11. 1 12. 22 13. 80 14. 35 15. 1 16. 59 17. 160,000 18. 11,800 19. 4 20. 59 21. 84 22. 17 23. $18 24. $35 25. $196 26. $907 27. area = 64 square

feet, perimeter = 32 feet

28. area = 96 square feet, permenter = 40 feet

29. 12 30. 2 31. 10 + x 32. 6x 33. yes

(cont’d) Test B 1. b 2. a 3. d 4. b 5. d 6. a 7. d 8. b 9. a 10. c 11. c 12. a 13. b 14. d 15. c 16. b 17. a 18. b 19. b 20. c 21. a 22. b 23. a 24. c 25. d 26. b 27. c 28. a 29. d 30. c 21. b 32. a 33. b


Martin-Gay Prealgebra edition 5 384

Chapter 2 2.1 1. integers 2. opposites 3. signed numbers 4. absolute value 5. −8 6. 2 7. 8. > 9. > 10. < 11. 4 12. 1 13. 0 14. −8 15. 6 16. 0 17. 18 18. −3 19. −6 20. < 21. > 22. Day 1 23. −4, −(2), 1, −(−3),

|−4| 24. False 25. answers will vary

Answers 2.2 1. 0 2. 1 3. −3 4. 1 5. 4 6. 14 7. −3 8. −17 9. −2 10. −88 11. −4 12. 3 13. 0 14. −5 15. 3 16. 22 feet 17. −3500 18. $9500 19. answers will vary 20. answers will vary

2.3 1. −3 2. 0 3. 4 4. −11 5. 6 6. 10 7. −3 8. −1 9. −3 10. 52 11. −9 12. −2 13. −2 14. −12 15. 3 16. −19 17. −2 18. 16 19. 5 20. −7 21. 8 points 22. 120° 23. answers will vary 24. answers will vary



Chapter 2 2.4 1. negative 2. positive 3. negative 4. positive 5. 0 6. undefined 7. 18 8. −40 9. 0 10. 60 11. 60 12. 0 13. −16 14. 16 15. 4 16. −16 17. −6 18. undefined 19. −8 20. −1 21. 48 22. 2 23. −12 yards 24. negative 25. positive 26. −1 27. −1

Answers 2.5 1. multiplication 2. division 3. addition 4. subtraction 5. 1 6. −5 7. 4 8. 18 9. 12 10. 64 11. −1 12. 8 13. −56 14. −2 15. −36 16. 75 17. −2 18. −15 19. 8 20. yes

(cont’d) 2.6 1. expression, equation 2. addition 3. multiplication 4. equivalent 5. expression, equation 6. solution 7. no 8. yes 9. −14 10. 14 11. −5 12. −4 13. 7 14. 4 15. 8 16. −27 17. −8 18. 0 19. 200 20. −8 21. answers will vary



Chapter 2 Test A 1. −1 2. −7 3. −10 4. 4 5. −6 6. −1 7. −60 8. −5 9. 29 10. 11 11. 6 12. −1 13. −8 14. −7 15. −12 16. 256 17. 2 18. −10 19. −2 20. −5 21. −12 22. 0 23. 1 24. $445 25. −67 feet 26. 43,973 feet 17. 2 28. −5 29. 32 30. −2 31. −2

Answers Test B 1. b 2. c 3. a 4. b 5. d 6. c 7. a 8. b 9. a 10. a 11. d 12. b 13. d 14. a 15. d 16. b 17. c 18. b 19. c 20. a 21. d 22. a 23. c 24. d 25. b 26. a 27. c 28. a 29. d 30. c 31. b 32. a 33. d

(cont’d)



Chapter 3 3.1 1. combine like terms 2. coefficients variable 3. coefficient 4. unlike, like 5. 10x 6. 6a 7. −y + 3 8. 12x 9. −6x 10. 56b 11. 3x + 12 12. −20x + 15 13. 2x − 2 14. 8x − 18 15. 8x − 13 16. 27x − 9 17. −12b + 8 18. 2xy − 35 19. 19x + 26 feet 20. 50x square inches 21. 700 square feet 22. 110 feet 23. 86x square feet

Answers 3.2 1. simplify 2. −3 3. 10 4. −12 5. 5 6. −2 7. −3 8. 3 9. 4 10. −8 11. −20 12. −4 13. 0 14. −9 15. x + 9 16. x − 17 17. −3x

18. x8−

19. 8x + 25 20. No, 3

3.3 1. 10 2. 2 3. 0 4. 15 5. −3 6. −1 7. 3 8. 25 9. −8 10. −3 11. −8 12. −13 13. −10 14. 8 15. 0 16. −9 17. −8 −12 = −20 18. 12(−3) = −36 19. 4(8 − 5) = 12 20. 11 − 8 = 3 21. 2



Chapter 3 3.4 1. x − 4 = 8

2. 47−=

x

3. 8 − x = −25 4. 4x = 220 5. 2x − 8 = 24 6. 4(x − 3) = 36 7. 3 8. −4 9. 24 10. 9 11. 7 12. 10 13. 1a 14. 26 students 15. Ruth 60 mph, Frank 65 mph 16. $13 for CD’s, $20 for DVD’s 17. 174 cars 18. 60 coats, 12 sweaters 19. $18

Answers Test A 1. −4x + 16 2. −8x + 12 3. 2x − 6 4. 8x + 8 5. 20x − 15 6. −1 7. 9 8. −1 9. 7 10. −2 11. −9 12. 12 13. 7 14. −3 15. −6 + x 16. 7 − 4x 17. 3x + 9 = −7 18. 4x + 6 = 25 19. 8 20. 16 males, 21

females

(cont’d) Test B 1. b 2. d 3. a 4. c 5. a 6. b 7. a 8. d 9. a 10. c 11. b 12. c 13. a 14. d 15. b 16. a 17. c 18. d 19. b 20. b


389

Chapter 4 4.1 1. fraction, numerator,

denominator 2. proper, improper 3. mixed number 4. numerator: 18 denominator: 29

5. 75

6. 87

7. 8.

9. 519271

10. 2912

11.

12. 13. 1 14. 1 15. 0 16. undefined

17. 726

18. 1156

19. 3

38

20. 723

21. 1035

22. 104

11

23. 1

24. 5

3,53

−−

25.

Answers 4.2 1. 323 ⋅ 2. 22 32 ⋅ 3. 2 ⋅ 5 ⋅ 7 4. 732 3 ⋅⋅

5. 92

6. 31

7. 72

−

8. x2

1

9. xy97

10. yes 11. no 12. no 13. no 14. yes

15. 31

16. 258

17. 4328

18. 169

19. 43

20. yes

4.3 1. multiplication 2. reciprocals

3. 356

4. 24x−

5. 103

−

6. 0

7. x2

1

8. 91

9. 81

−

10. 4

11. 5

4x

12. 25

32x

13. 95

14. 274

15. 161

16. 2

4

abc

17. 31

18. 321 ,

154

19. 40 20. 25 21. 300 calories 22. $5250

23. 1 ,3625 , yes

24. $32

0 1

0 1


390

Chapter 4 4.4 1. unlike, like 2. least common

denominator 3. equivalent

4. 53

5. 611

6. x4

5

7. 151

8. x2

9. 51

10. 61

−

11. 3

14 +x

12. 54

13. 1

14. 43 inch

15. 76 inch

16. 32 mile

17. 15 18. 12 19. 30

20. 2016

21. 2816

22. 248x

23. 81

24. 545

Answers 4.5

1. 2017

2. 43

3. 21

19y

4. 312

5. 6

18 −b

6. 81

7. 2013

−

8. 6528

9. 2117

−

10. 8

116 −x

11. 51

−

12. > 13. < 14.

125

15. 1211

−

16. 83

−

17. 611−

18. 1032 cm

19. 21 in

20. 3517 , no

(cont’d) 4.6

1. 3

21

2.

41

2

3. 311

4. 211

5. 7

6x

6. 2522

7. 2

8. x3

2

9. 32

10. 21

11. 22556

−

12. 365

13. 361

14. 412

15. 91

16. 1211

17. 3625

18. 245

19. 95

20. 31


391

Chapter 4 4.7 1. mixed number 2. whole number,

fraction 3. improper 4.

5.

107

6. 767

7. 26

8. 9920

9. 1611

10. 21177

11. 21214

12. 2153

13. 432

14. 52

15. 8324

16. 766−

17. 439

18. 871−

19. 35276−

20. >

Answers 4.8

1. 2019

2. 152

3. 3519

4. 65

5. 21

−

6. 326−

7. 21

8. 5

9. 2110

10. 7

11. 32

12. 5 13. 9

14. 185

15. 6

43 −x

16. 10

58 y+−

17. 359 x+

18. 107x

19. 213 inch

(cont’d) Test A

1. 54

2. 3

19

3. 913

4. 54

5. 8

5x

6. yes 7. 325 ⋅

8. 21

9. 95

−

10. 28

19x

11. x

x5

152 −

12. 145

13. 31

−

14. 41

15. 3526

−

16. 72

17. 0

18. 512

19. 322

20. 21101

21. 301

−

−3 −2 0 1 2 −1


392

Chapter 4 22.

367

−

23. 32

24. 3

25. 721−

26. 15141

27. 41

−

28. 0

29. 311

30. 212 feet

31. 612 feet

32. 41 square foot

33. 8 pieces

Answers Test B 1. b 2. c 3. d 4. a 5. c 6. b 7. c 8. d 9. a 10. b 11. c 12. a 13. d 14. a 15. d 16. c 17. b 18. a 19. c 20. b 21. d 22. c 23. a 24. a 25. b 26. b 27. a 28. b 29. c 30. a 31. d 32. a 33. c

(cont’d)



Chapter 5 5.1 1. six and forty-eight

hundredths 2. twenty-four and three

hundred seventy-five thousandths

3. negative seventeen hundredths

4. two thousand and one thousandth

5. one hundred six and four tenths

6. 3.4 7. 5.08 8. 72.317 9. −1.06 10. 2.45

11. 109

12. 54

13. 254

14. 2072

15. 25013

16. < 17. > 18. > 19. 0.37 20. 3.6 21. −2.05 22. 5.1 23. $38 24. answers will vary 25. 0.001, 0.047, 0.072,

0.135, 0.136

Answers 5.2 1. 4.83 2. 6.65 3. 1.81 4. 526.13 5. −8.93 6. −3.09 7. 9.3 8. 97.7 9. 62.81 10. 6.99969 11. −2.33 12. 8.7 13. 5.1 14. 5.3 15. no 16. no 17. 9.8x − 5.8 18. −10.26x − 7.75 19. 6.52 inches 20. 0.48 21. 1.37 inches

5.3 1. sum 2. right 3. left 4. circumference 5. 0.15 6. 0.432 7. 0.244 8. 12.96 9. 0.177 10. 310 11. 0.6 12. 3.94 13. 0.00467 14. 92,960,000 15. −3.68 16. no 17. 24π inches, 75.36

inches 18. 1590.6 calories 19. 4.8 grams 20. 4.3018 inches



Chapter 5 5.4 1. left 2. division, dividend,

divisor, right 3. 2.39 4. 0.065 5. 3.2 6. 3.45 7. 50,000 8. 5.9 9. 70 10. 8.4 11. 2.6 12. 3.6 13. 0.03621 14. 4.159 15. −0.0135 16. 0.36 17. 2 18. 12 gallons 19. 12.7 20. 7850 yards

Answers 5.5 1. 0.48 2. 0.45 3. 641.0 4. 36.0 5. 3.6 6. 0.28 7. 4.43 8. < 9. > 10. >

11. 0.411, 0.43, 2511

12. 1.36 13. −12 14. 0.84 15. 7.25 square inches 16. 0.96 square yards 17. −8.01 18. −7.4 19. −10.2 20. 0.32 21. 0.15

(cont’d) 5.6 1. −8.1 2. 3.4 3. 3.5 4. −115 5. −8.8 6. 4.15 7. −1.27 8. 19.6 9. 2.4 10. 11 11. 0.2 12. 35 13. 7.78 14. −5.5 15. −1.35 16. 0.04 17. −46.5 18. 144 19. −1.51 20. answers will vary



Chapter 5 5.7 1. mode 2. average 3. median 4. mean 5. 24 6. 4.9 7. 515.125 8. 125.8 9. 2.85 10. 1.57 11. 27 12. 5 13. 500.5 14. 127 15. 27 16. 5.2 17. no mode 18. no mode 19. 118, 121 20. 20, 20, 23,27

Answers Test A 1. thirty-six and one

hundred ninety five thousandths

2. 1.065 3. 8.215 4. −4.36 5. −13.733 6. 8.673 7. −23.1 8. 47.3 9. 0.92 10. < 11. >

12. 2519

13. 2565−

14. −0.52 15. 0.69 16. −3.21 17. −13 18. 2.9x + 7.78 19. 2.4 20. 1.08 21. 40.8, 47, no mode 22. 35, 42, 48 23. 2.93 24. 9.3 square inches 25. 43.96 yards

(cont’d) Test B 1. b 2. c 3. c 4. a 5. b 6. c 7. d 8. c 9. d 10. b 11. b 12. c 13. d 14. a 15. d 16. c 17. d 18. d 19. a 20. b 21. c 22. b 23. a 24. b 25. c



Chapter 6 6.1 1. unit 2. division 3. ratio

4. 149

5. 31

6. 52330

7. 4

11

8. 65

9. 116

10. computers 7

printer 1

11. diners 4 table1

12. 12 calories/serving 13. 4 books/student 14. 2 pages/minute 15. 2.4 pages/minute 16. Pete 17. $0.20 per banana 18. $3.60 for 20 ounces 19. $2.40 for 12 pens 20. Miles Miles/gallon 184 30.2 312 30.6

Answers 6.2 1. proportion 2. ratio 3. cross product

4. 12535

257=

5. 15

217

7213=

6. 7

1436=

7. false 8. true 9. false 10. false 11. false 12. 3 13. −20 14. 2 15. −0.9

16. 49

17. 4.7 18. answers will vary 19. answers will vary 20. 0

6.3 1. 10 attempts 2. 64 goals 3. 40 accepted 4. 240 applied 5. 160 miles 6. 4.5 inches 7. 585.6 miles 8. 40 gallons 9. 16,800 square feet 10. 7 bags 11. 28 hits 12. 35 times 13. 1 cup 14. 135 brownies 15. 18 cups of flour 16. 20 weeks 17. 260 pens 18. 63 cheetos 19. 870 mg 20. 6 cups



Chapter 6 6.4 1. square root 2. radical 3. perfect squares 4. a. leg b. leg c. hypotenuse 5. 222 zyx =+ 6. 7 7. 5

8. 41

9. 76

10. 21

11. 3.873 12. 9.644 13. 4.899 14. 8.602 15. 11.136 16. 10 inches 17. 13 18. 9.7 19. 9 and 10

Answers 6.5 1. similar 2. congruent 3. yes 4. no 5. yes 6. yes

7. 34

8. 23

9. 23

10. 34

11. 11.25 12. 10 13. 8 14. 4.5 15. 8.3 inches 16. 48 feet 17. 64 feet 18. x = 6, y = 7.5 19. answers will vary 20. answers will vary

(cont’d) Test A

1. 1712

2. 65 miles/hour

3. 52

4. 2

5. 97

6. 45 miles/gallon 7. 5 miles/hour 8. 15 applicants/job 9. 16 ounces for $2.06 10. 12 ounces for $1.21 11. true 12. false 13. 6

14. 214

15. 4 16. 3 17. 5 inches 18. 5 hours 19. 750 ml 20. 9 21. 12.767

22. 107

23. 7.81 24. 9 inches 25. 33 feet



Chapter 6 Test B 1. b 2. a 3. c 4. b 5. d 6. b 7. c 8. d 9. a 10. a 11. b 12. a 13. d 14. c 15. d 16. a 17. b 18. a 19. c 20. d 21. b 22. b 23. c 24. a 25. c

Answers

(cont’d)



Chapter 7 7.1 1. per hundred 2. % 3. 13% 4. 27% 5. 0.21 6. 0.08 7. 0.034 8. 4

9. 503

10. 5021

11. 2007

12. 91

13. 50% 14. 61% 15. 0.6% 16. 400% 17. 60% 18. 85% 19. 375%

20. 3216 %

21. 42.86%

22. 0.12, 253

23. 4% 24. > 25. <

Answers 7.2 1. is 2. of 3. 0.15x = 80 4. 1.7 = 0.34x 5. 120x = 4 6. 36 = 390x 7. x = 0.1 ⋅ 180 8. x = 0.56 ⋅ 120 9. 180x = 200 10. 300 11. 12 12. 1.5 13. 140 14. 75% 15. 76% 16. 720 17. 24 18. 64% 19. 50% 20. 40% of what

number is 16?

7.3 1. percent, base, amount 2. amount 3. base 4. percent

5. 10072

80=

x

6. 10018

25=

x

7. 10015912

=x.

8. 10039112

=x

9. 100490

70 x=

10. 20 11. 210 12. 50% 13. 200% 14. 105 15. 150 16. 181.3 17. 75 18. 4% 19. 28 20. 120% of 75 is what

number?



Chapter 7 7.4 1. 640 bulbs 2. 45 defectives 3. 18% 4. 192 pages 5. 400 televisions 6. $160,000 7. $600 8. 15, 25% 9. 4, 20% 10. 14, 40% 11. 3, 30% 12. 16, 40% 13. 27, 18% 14. 20% 15. 20% 16. 15% 17. 10% 18. 33% 19. 15% 20. 100%

Answers 7.5 1. $55.25 2. $4.80 3. $150, $160.50 4. $30, $630 5. $450, $477 6. $379.80 7. $19,000 8. $52.92 9. $45,000 10. $72,000 11. $12,000 12. $180,000 13. $7.36, $84.64 14. $7.20, $40.80 15. $45, $105 16. $130, $520 17. $300 18. $150, $600 19. $54.06 20. 30% followed by

5%

(cont’d) 7.6 1. simple 2. compound 3. compound 4. simple 5. $216, $1016 6. $448, $1148 7. $312, $1512 8. $33, $583 9. $70, $2870 10. $7200 11. $180, $1380 12. $180, $3180 13. $16,325.87 14. $16,376.79 15. $4666.36 16. $35,525.86 17. $1779.04 18. $635.62 19. $12,600.66 20. $2000, 12% for 5

years



Chapter 7 Test A 1. 0.32 2. 1.5 3. 0.0005 4. 60% 5. 320% 6. 1.2%

7. 259

8. 521

9. 2500

1

10. 28% 11. 85% 12. 162.5% 13. 25%

14. 252

15. 168 16. 2000 17. 25% 18. 9 ml 19. $250,000 20. $617.70 21. 12% 22. $270 23. $720 24. 8% 25. $675 26. $2380.31 27. $1534.95

Answers Test B 1. b 2. c 3. d 4. c 5. a 6. b 7. a 8. c 9. d 10. b 11. a 12. c 13. a 14. b 15. d 16. a 17. c 18. b 19. a 20. d 21. c 22. a 23. b 24. c 25. d 26. a 27. b

(cont’d)



Chapter 8 8.1 1. pictograph 2. line 3. bars 4. histogram, class

interval, class frequency

5. Texas 6. California 7. $600,000,000 8. bicycling and

basketball 9. 475 calories 10. 25 calories 11.

5 Largest Cities in Texas

0

500

1000

1500

2000

2500

3000

3500

Houston Dallas SanAntonio

El Paso

Pop

ulat

ion

in th

ousa

nds

12. 20 students 13. 15 students 14. 15 students 15. Class Frequency 4 8 4 2 2 16.

Years of Service

0123456789

0 - 4 5 - 9 10 - 14 15 - 19 20 - 24

Years

Num

ber o

f Em

ploy

ees

17. $100,000 18. 4th quarter 19. $200,000,000 20. $600,000,000

Answers 8.2 1. 360° 2. 100% 3. shoes

4. 31

5. 32

6. 31

7. 43

8. algebra books 9. 40% 10. calculus and

statistics books 11. 300 books 12. 120 books 13. 30% 14. 30% 15. action 16. romance

17. 32

18. Quarterly Sales

1st Quarter15%

2nd Quarter15%

3rd Quarter30%

4th Quarter40%

19.

20.

Acres in Gaines County

Peanuts78%

Cotton20%

Wheat2%

8.3 1. x, y 2. origin 3. quadrants 4. (0, 0) 5. plane 6.

(3, 4)

(1, 2)(-2, 3)

(-2, -1)

(0, 4)

7.

(1, 4)

(2, 0)

(2, -1)

(0, 2)

(-3, 4)

8. A (1, 4), B (0, 3), C (2, 1), D (−4, 0), E (−2, −3) 9. F (−2, 3), G (0, −3), H 1, 2), I (2, 0), J (2, −3 10. yes 11. no 12. yes 13. no 14.

(1, 2)

(3, 0)

(0, 3)

Expenses

Housing17%

Transportation

16%

Food28%

Entertainmentt17%

Clothes20%

Other2%



Chapter 8 8.3 (cont’d) 15.

(-3, 1)

(3, -1)

(0, 0)

16. (1, −4), (−2, 8), (0, 0) 17. (3, 2), (2, 0), (4, 4) 18. (−2, 2), (4, −4), (0, 0) 19. (4, 1), (5, 2), (0, −3) 20. a) II, b) I c) III, d) IV

Answers 8.4 1. horizontal 2. vertical 3.

4.

5.

6.

7.

(cont’d) 8.4 (cont’d) 8.

9.

10.

11.

12.



Chapter 8 8.4 (cont’d) 13.

14.

15.

16.

17.

Answers 8.4 (cont’d) 18.

19.

20.

(cont’d) 8.5 1. probability 2. probability 3. 1 4. 0 5. o 1o 1 f 1f 2 o 2o f 2f 6. a 1a 1 b 1b 2 a 2a b 2b 7. H HHH H T HHT H T H HTH T HTT H THH T H T THT T H TTH T TTT

8. 61

9. 31

10. 21

11. 0 12.

134

13. 133

14. 136

15. 139

16. 53

17. 101

18. 41

19. 81

20. 83



Chapter 8 Test A 1. January 2. 200 puppies 3. 50 puppies 4. 2 weeks 5. 8000 6. 4th week 7.

8. 10,000 9. 2005 to 2006 10. 8000

11. 43

12. 32

13. 160 14. 120 15. 12 16. 8 17. Class Frequencies 3 2 6 5 5 1 18.

Life Expectancies

0

1

2

3

4

5

6

7

73 - 74 75 - 76 77 - 78 79 - 80 81 - 82 83 - 84

Years

Num

ber o

f Cou

ntrie

s

19. (3, 1) 20. (0, −2) 21. (−1, 2) 22. (−2, −3)

Answers Test A (cont’d) 23.

24.

25.

26.

27.

(cont’d) Test A (cont’d) 28.

29.

30.

31. H HH H T HT T H TH T TT

32. 31

33. 41

Life Expectancy

72

74

76

78

80

82

Japan Canada UnitedKingdom

UnitedStates

Mexico Country

Years



Chapter 8 Test B 1. a 2. c 3. a 4. c 5. a 6. c 7. c 8. c 9. a 10. d 11. b 12. c 13. a 14. c 15. a 16. a 17. c 18. c 19. b 20. c 21. d 22. c 23. a 24. c 25. b 26. d 27. c 28. a 29. d 30. b 31. c 32. b 33. a

Answers



Chapter 9 9.1 1. adjacent 2. angle, vertex 3. ray 4. line 5. obtuse 6. acute 7. line, TS 8. ray, MN 9. angle, n PQR 10. line segment, IJ 11. nBAC, nCAB 12. right 13. straight 14. acute 15. obtuse 16. 67° 17. 123° 18. 133° 19. 119° 20. nj = 55°, nk = 35°, nl = 125°, nm = 35°

Answers 9.2 1. circumference 2. perimeter 3. diameter 4. pi 5. 44 yd 6. 152 cm 7. 22 yd 8. 32 in. 9. 31 yd 10. 36 ft 11. 60 yd 12. 80 in. 13. 26 in. 14. 32 mi 15. 60 cm 16. 12.258 ≈π in. 17. 52.5618 ≈π in. 18. 42.93 ≈π ft 19. 98.217 ≈π in. 20. 97.1 ft

9.3 1. square 2. cubic 3. square 4. surface area 5. volume 6. 48 sq m 7. 28 sq in. 8. 90 sq in.

9. 20171 sq ft

10. 84 sq in. 11. 114 sq ft 12. 90 sq cm 13. 480 sq ft 14. 144 cu in., 180 sq in. 15. 729 cu cm, 486 sq cm

16. 7537 cu yd,

7375 sq yd

17. 21238 cu in.,

2117523 sq in.

18. 73251 cu in.

19. 75 cu ft 20. 552 sq ft



Chapter 9 9.4 1. 6 ft 2. 24 ft 3. 5 in. 4. 78 in. 5. 6 yd 2 ft 6. 5 ft 5 in. 7. 17 ft 8. 2 mi 300 ft 9. 8 ft 2 in. 10. 8 yd 1 ft 11. 6 ft 10 in. 12. 62 yd 2 ft 13. 4800 cm 14. 1.2 m 15. 56.4 m 16. 8000 m 17. 8mm 18. 960 cm 19. 2.1 km 20. 12 sq ft

Answers 9.5 1. mass 2. weight 3. 16 4. 2000 5. 48 oz 6. 7 tons

7. 412 tons

8. 3000 pounds 9. 56 oz 10. 13 lb 11. 2 lb 12 oz 12. 13 lb 8 oz 13. 1 ton 800 lb 14. 0.65 kg 15. 50,000 g 16. 3350 g 17. 7210 mg 18. 8.1 g 19. 1.28 g or 1280 mg 20. 9 kg

(cont’d) 9.6 1. capacity 2. liter 3. 2 c

4. 213 pt

5. 3 gal 6. 9 qt 7. 12 gal 2 qt 8. 11 gal 1 qt 9. 6 c 3 oz 10. 2 gal 2 qt 1 pt 11. 10 gal 2 qt 12. 5000 ml 13. 9 ml 14. 1.5 kl 15. 140 L 16. 980 L 17. 48.9 L 18. 4050 L or 4.05 ml 19. 3000 ml 20. 12.8 L



Chapter 9 9.7 1. 27.05 fl oz 2. 16.96 qt 3. 228.6 cm 4. 153.23 km 5. 20 oz 6. 440 lb 7. 66.96 mi 8. 20.34 ft 9. 3.25 gal 10. 6.76 fl oz 11. 27 kg 12. 567 g 13. 41°F 14. 80.6°F 15. 190.4°F 16. 122°F 17. 4.4°C 18. 100°C 19. 13.3°C 20. 37.2°C

Answers Test A 1. 72° 2. 159° 3. 30° 4. 48° 5. 125° 6. 12 in. 7. 12 ft 8. C = 75.36 in. A = 452.16 sq in. 9. P = 4.96 ft A = 1.47 sq ft 10. P = 100 ft A = 568 sq ft

11. 7375 cu in.

12. 192 cu in. 13. 48 in. 14. 210 cu ft 15. 64 ft, $224 16. 5 ft 8 in 17. 6 qt 18. 5 lb 19. 6400 lb

20. 433 gal

21. 0.03 g 22. 1400 g 23. 21 mm 24. 0.8 g 25. 930 ml 26. 8 qt 27. 2 lb 10 oz 28. 11 ft 29. 1 gal 1 qt 30. 2.098 km or 2098 m 31. 0.4 cm or 4 mm 32. 23.9°C 33. 65.5°F

(cont’d) Test B 1. b 2. c 3. d 4. a 5. a 6. c 7. d 8. b 9. d 10. b 11. c 12. d 13. a 14. d 15. c 16. b 17. a 18. b 19. c 20. d 21. a 22. b 23. d 24. c 25. c 26. a 27. d 28. b 29. a 30. b 31. c 32. d 33. a



Chapter 10 10.1 1. trinomial 2. binomial 3. monomial 4. terms 5. 92 −− x 6. 16a − 9 7. 127 2 −+ xx 8. 237 2 +− yy

9. 1122 −− xx 10. −3x +5 11. 973 2 ++− xx 12. 2a + 3 13. 1232 −−− xx 14. 37 2 −y 15. 1852 2 +−− aa 16. −11 17. 23 18. −40 19. 4 20. (8x + 3) inches

Answers 10.2 1. 11x 2. 86x 3. 324x 4. 516y 5. 976 yx 6. 1064 yx 7. 18x 8. 36y 9. 40a 10. 20z 11. 34x 12. 1681a 13. 2412 yx 14. 1015ba 15. 3018 yx 16. 16625 bx 17. 8729y 18. 91913648 zyx 19. 1614144 yx 20. 436 ba

10.3 1. xx 1014 3 − 2. abbaab 8168 23 −+− 3. baa 34 126 +− 229 ba− 4. 62 −− yy 5. 688 2 −− xx 6. 40316 2 +− xx 7. 125 2 −x 8. 254016 2 +− xx 9. 94249 2 +− bb 10. 25204 2 ++ xx 11. 2826 2 −− xx 12. 10712 2 −− xx 13. 104121 2 +− xx 14. 254 2 −x 15. 1023 +−− xxx 16. xxx 29196 23 +− − 21 17. 995 23 −+− yyy 18. 273 −x 19. 234 122 xxx −− −x − 21 20. ( )11132 2 +− xx inches



Chapter 10 10.4 1. 6 2. 5 3. 2 4. 6 5. 9 6. 10 7. 5y 8. b 9. yx 2 10. 32x 11. 34x 12. 33x 13. ( )24 −xx 14. ( )79 −yy 15. ( )34 −aa 16. ( )433 2 −x 17. ( )422 2 −− xxx 18. ( )23 314 xx − 19. ( )423 2 +−− aaa or ( )423 2 −+− aaa 20. x + 2

Answers Test A 1. 87 −x 2. xx 24 2 + 3. 2x + 2 4. 933 2 −−− xx 5. 16 6. 13x 7. 35a 8. 627x 9. 56x− 10. 55b 11. 26814144 cba 12. xx 2715 2 − 13. xxx 45355 23 −+− 14. 202 −− xx 15. 10219 2 +− xx 16. 259 2 −x 17. 817216 2 +− xx 18. 2737 23 ++− aaa 19. ( )26 2 −−= xxA in. ( )416 −= xP in. 20. 18 21. 24y 22. ( )35 −yy 23. ( )127 −aa 24. ( )4233 2 −− xx 25. ( )71112 25 +− xxx

(cont’d) Test B 1. b 2. c 3. a 4. c 5. d 6. a 7. b 8. c 9. d 10. b 11. c 12. d 13. a 14. b 15. d 16. c 17. d 18. a 19. b 20. c 21. b 22. a 23. d 24. c 25. a


Chapter 1 Answers - · PDF fileMartin-Gay Prealgebra Edition 5 381 Chapter 1 1.2 1. words 2....

Documents

Transcript of Chapter 1 Answers - · PDF fileMartin-Gay Prealgebra Edition 5 381 Chapter 1 1.2 1. words 2....