Section 2.4 (pages 115–119)
1.D; There cannot be a fractional number of cars. 3.A; Distance cannot
be negative. 5. 7 7. 3 9. 6 11. 13.Pennsylvania: 35 screens;
Ohio: 33 screens 15.Democrats: 58; Republicans: 40 17.Bon Jovi:
$210.7 million; Bruce Springsteen: $204.6 million 19.wins: 62;
losses: 20 21.orange: 97 mg; pineapple: 25 mg 23.168 DVDs
25.onions: 81.3 kg; grilled steak: 536.3 kg 27.1950 Denver nickel:
$16.00; 1945 Philadelphia nickel: $8.00 29.whole wheat: 25.6 oz;
rye: 6.4 oz 31.American: 18; United: 11; Southwest: 26 33.shortest
piece: 15 in.; middle piece: 20 in.; longest piece: 24 in. 35.36 million mi
37.Aand B: ; C: 39.68, 69 41.101, 102 43.10, 12
45.10, 11 47. 18 49.15, 17, 19 51. 53.20° 55.
- 24 61. 20
Section 2.5 (pages 125–129)
- (a)The perimeter of a plane geometric figure is the distance around
the figure. (b)The area of a plane geometric figure is the measure of
the surface covered or enclosed by the figure. 3.180°; the same
5.area 7.perimeter 9.area 11.area 13. 15.
- 39.length: 18 in.; width: 9 in. 41.length: 14 m;
width: 4 m 43.shortest: 5 in.; medium: 7 in.; longest: 8 in.
45.two equal sides: 7 m; third side: 10 m 47.about 154,000
49.perimeter: 5.4 m; area: 51.10 ft 53.194.48 ; 49.42 ft - 57.length: 36 in.; volume: 59. ,
61.55°, 35° 63.51°, 51° 65.105°, 105° 67. 69.
- or 91. ,
or 93. 95. 97.
Section 2.6 (pages 135–139)
- (a)C (b)D (c)B (d)A 3. 5. 7. 9. 11.
13.10 lb; $0.429 15.32 oz; $0.093 17.128 oz; $0.051 19.36 oz;
$0.049 21.263 oz; $0.076 23.true 25.false 27.true 29.
- 43.$30.00 45.$8.75 47.$67.50 49.$48.90 51.4 ft
53.2.7 in. 55.2.0 in. 57. 59.$428.82 61.50,000 fish
63.x= 4 65.x= 2 67.x= 1 ; y= 4
- 43.$30.00 45.$8.75 47.$67.50 49.$48.90 51.4 ft
2 58 cups(^576) E^452 F 526 5 - (^16556) E- (^315) F
5356
5
6
1
5
15
2
4
3
4
3
a= (^5500065286) E- (^121) F
P
2
- b
a=P-^2 b
2
r=M
C
r=M-C - 1
C
y=C-Ax ,
Bm=y-b
W= x
P- 2 L
b=P-a-c 2h=
3 V
pr^2
h=
2 a
b
r=
I
H= pt
V
d= LW
C
pb=
a
h
t=
d
r23,800.10 ft^2 11,664 in.^3 48°132°1.8 m^2 ft^2ft^2V=7234.56r= 10 a=50.24 r= 6 V= 150 V= 52b= 4 t=5.6 I= 1575 B= 14 r=2.6P= 26 a= 6450°18° 39°40° 100°- 3
E^1417 F^506576 526 5 all real numbers 6 5 - 26 5706536 0 0 5256 5 - 10.8 6 536E^73 F 576 516 556 5 23.7 6 566 69. (a) (b)54 ft 71.$237 73.$272
75.0.53 77.0.96 79.0.09
81.1.29 83.80% 85.2%
87.12.5% 89.220% 91.109.2- 700 95. 425 97.8%
99.120% 101.$119.25; $675.75
103.80% 105.$3000 107. 109.
Section 2.7 (pages 145–150)
1.45 L 3.$750 5.$17.50 7.A 9. (a)532,000 (b)798,000
(c)494,000 11.D 13.160 L 15. L 17.4 L 19.20 mL
21.4 L 23.$2100 at 5%; $900 at 4% 25.$2500 at 6%; $13,500
at 5% 27.10 nickels 29.44-cent stamps: 25; 17-cent stamps: 20
31.Arabian Mocha: 7 lb; Colombian Decaf: 3.5 lb 33.A 35.530 mi
37.3.483 hr 39.7.97 m per sec 41.8.47 m per sec 43.5 hr- hr 47. 49.eastbound: 300 mph; westbound: 450 mph
51.40 mph; 60 mph 53.Bob: 7 yr old; Kevin: 21 yr old
55.width: 3 ft; length: 9 ft 57.$650 59.false 61.true 63.true
Section 2.8 (pages 159–162)11.13.15.17.19.21.23.25.It must be reversed when one is multiplying or dividing by a negative
number.
27.29.31.33.35.37.39.
–3 01 - q, - 34–3 03 - 3, q 20 5201 20, q 201 - q, 0 4–3 01 - q, - 32–10 023 - 10, q 20 61 - q, 6 2–11 –2 01 - q, - 1120 53 5, q 2013 1, q 2–1 0-^12
C-^12 , qB
01 - q, 0 40 41 4, q 2–3 01 - q, - 3204x... 4 1 - q, 4 47 , 6 1 or 6 , 72 ; Ú, ... 1 or ..., Ú 2 1 0, q 2 x7- 41 34 7 12 hr(^13 13)
566 546
Shadow Shadow
Pole
Chair
x
12
18 4
A-4 Answers to Selected Exercises
http://www.ebook777.com
http://www.ebook777.com