Download M115Ch3and4_PracticeEx2_Solutions

Solutions:
c.
1
8
d.
16
81
c.
a 9b15
8
d.
x10
4 y2
1. a. 64
b. 16
2. a. 1
b.
3. a. 12 x 5 y 5
b.  8x 3 y 4
c. 7 x 5  9
d. 3x 2  x 
f. 3x  12
g.  y  14
j. 25 x 2  9 y 2
h.
e.  3 x 2  6 x  20
i. 9 x 2  30 x  25
4. a.
1
x10
b. 7 x 3  2 x 2  8 x  2 
x  13
5. a. 1.357 (109 )
b. 6.2 (106 )
6. Area = 2 x 2  2 x  12
Perimeter = 6x  2
7. a. 2xx  2x  2
c. 4 x  3x  5
b.
8. a.
 9
b. 0, 
 4
3, 4
 1
d.  , 0,
 2
d.
1

2
e.
 12,  4
x  3x  8
 m  2 (t  x)
c.
6, 2
 5 
f.  , 0
 4 
9. The number is 0 or 6.
10. The whole numbers are 9 and 11.
11. length is 14 inches
12. The lengths of the legs are: 9 centimeters and 12 centimeters
13. In 5 seconds
14. The base is 12 millimeters.
18
x4
4
x3
x 2  2 x  24