course Mth 158
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2nd half of Asst. 1
53. 4 + 8 12
_______ = _______ = 6
5 - 3 2
56. 5 3
___ x ___ = 5 will go into 5 one time, 5 will go into 10 two times = 1 1 1
9 10 3 will go into 3 one time, 3 will go into 9 three times ___x___ = ___
3 2 6
59. 3 2 3 5 2 4 15 8 15+8 23
___+___ = LCM = 20 ___x___ + ___ x ___ = ____+___ = _____ = _____
4 5 4 5 5 4 20 20 20 20
62. 8 15
___+____ = LCM - 18 8 2 15 9 16 135 151
9 2 ___x ___ + ____x___ = ____ + ____ = ____
9 2 2 9 18 18 18
65. 1 7 6 - 21 -15 -2 & 1/2 (6 goes into 30, 5 times, 6 goes into 18, 3 times)
___ - ____ = ____________ = _________ =
30 18 5 3 2
68. 6 3 30 - 6 24
___ - ____= _________________ = ____ = 8 (7 goes into 35, 5 times and 7 goes into 14, 2 times)
35 14 5 2 3
71. Distributive property
6(x+4) = 6 times x + 6 x 4 = 6x + 24
74. 4x(x+3) = 4x times x + 4 times 3 = (4x3)x = 12x
77. (x-4)(x-2) = x^2 + x - 2x-2 = x^2 - x - 2
80. (x-4)(x-2) = x^2 - 4x - 8
83. In the Distributive Property you add the numbers together and combine the x's
86. The reason these two are not equal is because to work these problems out, the second one would have to have a LCM
before working it out --- the first one you just add the numbers together for the answer.
89. Division is not commutative because a number like 5/9 would not be the same as or equal to 9/5.
92. Because 5^2 + 5 = 30 and 25 + 5 = 30
95. The repeating decimal 0.9999....... equals to 1.
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Please notify your instructor of the error, using the Submit Work form, and be sure to include the date 02-21-2006.
Good. Let me know if you have questions.