CHAPTER 1 Review Exercises 43
1.3 Evaluate each expression.
35. 36. 37. 38.
Find each square root. If it is not a real number, say so.
Simplify each expression.
Evaluate each expression for ,,and.
49.The following expression for body mass index(BMI)
can help determine ideal body weight.
A BMI of 19 to 25 corresponds to a healthy weight.
(Source: The Washington Post.)
(a)Baseball player Grady Sizemore is 6 ft, 2 in., tall
and weighs 200 lb. (Source: http://www.mlb.com) Find his
BMI (to the nearest whole number).
(b)Calculate your BMI.1.4 Simplify each expression.
50. 51.
52. 53.
54. 55.
56. 57.
58. 59.
60.
Complete each statement so that the indicated property is illustrated. Simplify each answer if
possible.
- 314 m- 22 + 213 m- 12 - 413 m+ 12
- 3 y+ 6 - 5 + 4 y 2 a+ 3 - a- 1 - a- 2
912 m+ 3 n 2 - 1 - p+ 6 q 2 - 12 p- 3 q 2- 21 k+ 32 61 r+ 32
- m+ 4 m 5 p-p
2 q+ 18 q 13 z- 17 z704 * 1 weight in pounds 2 , 1 height in inches 224 m^3 - 3 n
7 k^2 - 104 k- 7 m - 3 n+m+ 5 kk=- 4 m= 2 n= 16- 51322 + 9 A 4 B- 5
6 - 51 - 22
-
2
3
- 14 a 351 - 22 + 8 - 434
3
7
b+ 6 , 3- 0.81 - 49
B
64
121
400
a 1 - 523 - 533
7
b3
10461.
(distributive property)62.
(identity property)2 x+ 3 x= - 5 # 1 =
63.
(associative property)64.
(commutative property)214 x 2 = -^3 +^13 =65.
(inverse property)66.
(distributive property)- 3 + 3 = 61 x+z 2 =
67.
(identity property)0 + 7 = 68.
(inverse property)4 #
1
4
=
Multiply or divide as indicated.
34.Concept Check Which one of the following is undefined: or?
7 - 7
5
5
7 - 7
- 2.3754
- 0.74
75
- 5
-
3
7
a-14
9
21 - 521 - 321 - 32 b