Pre-Calculus Homework Solutions 8

Pre-Calculus Homework Solutions 8 - 56. Sample answer: You...

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56. Sample answer: You can copy the segment onto a coordinate plane and then use either the Pythagorean Theorem or the Distance Formula to find its length. Answers should include the following. • To use the Pythagorean Theorem, draw a vertical segment from one endpoint and a horizontal segment from the other endpoint to form a triangle. Use the measures of these segments as a and b in the formula a 2 1 b 2 5 c 2 . Then solve for c .To use the Distance Formula, assign the coordinates of the endpoints of the segment as ( x 1 , y 1 ) and ( x 2 , y 2 ). Then use them in d 5 Ï ( x 2 2 x w 1 ) 2 1 ( w y 2 2 y w 1 ) 2 w to find the length of the segment. Ï 61 w < 7.8 units 57. B; d 5 ¬ Ï ( x 2 2 x w 1 ) 2 1 ( w y 2 2 y w 1 ) 2 w d 5 ¬ Ï ( 2 2 2 w 6) 2 1 w ( 2 4 2 w 11) 2 w d 5 ¬ Ï ( 2 8) 2 w 1 ( 2 1 w 5) 2 w d 5 ¬ Ï 64 1 2 w 25 w d 5 ¬ Ï 289 w d 5 ¬ 17 58. A Page 27 Maintain Your Skills 59. WY 5 WX 1 XY WY 5 1 } 3 4 } 1 2 } 1 2 } WY 5 4 } 1 4 } W W W Y is 4 } 1 4 } in. long.
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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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