Pre-Calculus Homework Solutions 128

# Pre-Calculus Homework Solutions 128 - 48. m Q m R 180 16 68...

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43. KL 5 ¬ Ï ( 2 1 2 w 3) 2 1 w (5 2 2 w ) 2 w 5 ¬ Ï 16 1 9 w or 5 LM 5 ¬ Ï [ 2 3 2 w ( 2 1)] w 2 w 1 ( 2 w 7 w 2 5) w 2 w w 5 ¬ Ï 4 1 14 w 4 w 5 ¬ Ï 148 w < ¬ 12.2 KM 5 ¬ Ï ( 2 3 2 w 3) 2 1 w ( 2 7 2 w 2) 2 w 5 ¬ Ï 36 1 8 w 1 w 5 ¬ Ï 117 w < ¬ 10.8 The side lengths in order from least to greatest are KL , KM , LM , so the angles in order from the least to the greatest measure are / M , / L , / K . 44. Sample answer: Draw a triangle that satisfies the given information. Then draw the medians and measure them to find their lengths. In n ABC , AB . AC . BC .Measure A w M w , B w N w , and C w O w .In this triangle CO , BN , AM . 45. 8 x 1 4 1 11 x 2 37 1 5 x 1 21 5 ¬ 180 24 x 2 12 5 ¬ 180 24 x 5 ¬ 192 x 5 ¬ 8 8 x 1 4 5 ¬ 8(8) 1 4 or 68 11 x 2 37 5 ¬ 11(8) 2 37 or 51 5 x 1 21 5 ¬ 5(8) 1 21 or 61 68 . 61 . 51, so the lengths of the legs of the trip in order from greatest to least are Phoenix to Atlanta, Des Moines to Phoenix, Atlanta to Des Moines. 46.
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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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