Pre-Calculus Homework Solutions 65

# Pre-Calculus Homework Solutions 65 - ( 5 10)2 [7 ( 6)]2 (...

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AC 5 ¬ Ï ( 2 5 2 w 10) 2 1 w [7 2 ( w 2 6)] 2 w 5 ¬ Ï ( 2 15) w 2 1 ( 2 w 1) 2 w 5 ¬ Ï 226 w AB 1 BC 1 AC 5 ¬ Ï 148 w 1 Ï 10 w 1 Ï 226 w < ¬ 30.36 67. d 5 ¬ Ï ( x 2 2 w x 1 ) 2 1 w ( y 2 2 y w 1 ) 2 w AB 5 ¬ Ï [2 2 ( w 2 3)] 2 w 1 ( 2 9 w 2 2) 2 w 5 ¬ Ï 5 2 1 ( w 2 11) 2 w 5 Ï 146 w BC 5 ¬ Ï (0 2 2 w ) 2 1 [ 2 w 10 2 ( w 2 9)] 2 w 5 ¬ Ï ( 2 2) 2 w 1 ( 2 1 w ) 2 w 5 Ï 5 w AC 5 ¬ Ï [0 2 ( w 2 3)] 2 w 1 ( 2 1 w 0 2 2) w 2 w 5 ¬ Ï 3 2 1 ( w 2 12) 2 w 5 Ï 153 w AB 1 BC 1 AC 5 ¬ Ï 146 w 1 Ï 5 w 1 Ï 153 w < ¬ 26.69 68. / 2 and / 5, / 3 and / 8 69. / 1 and / 5, / 2 and / 6, / 4 and / 8, / 3 and / 7 70. / 1 and / 7, / 4 and / 6 71. / 2 and / 8, / 3 and / 5 Page 150 Practice Quiz 2 1. slope of AB @ #\$ 5 ¬ } 1 6 2 2 ( 2 3 1) } 5 ¬ } 2 3 } slope of CD @ #\$ 5 ¬ } 4 2 2 2 ( ( 2 2 2 2 ) ) } 5 ¬ } 6 4 } or } 3 2 } The slopes are not the same, so AB @ #\$ and CD @ #\$ are not parallel. The product of the slopes is 1 } 2 3 } 21 } 3 2 } 2 or 1, so AB @ #\$ and CD @ #\$ are not perpendicular. Therefore,
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## This note was uploaded on 12/19/2011 for the course MAC 1140 taught by Professor Dr.zhan during the Fall '10 term at UNF.

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