Pre-Calculus Homework Solutions 158

Pre-Calculus Homework Solutions 158 - 1 h 51. 24incet fe x...

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51. } 2 1 4 in fe c e h t } 5 ¬ x 5 ¬ 24 1 } 3 4 } 2 x 5 ¬ 18 } 2 1 4 in fe c e h t } 5 ¬ y 5 ¬ 24 1 } 5 8 } 2 y 5 ¬ 15 The living room has dimensions 18 feet by 15 feet. 52. } 2 1 4 in fe c e h t } 5 x 5 24(1.25) x 5 30 } 2 1 4 in fe c e h t } 5 y 5 24 1 } 3 8 } 2 y 5 9 The deck has dimensions 30 feet by 9 feet. 53. The sides are in a ratio of 4 : 1, so if the length of WXYZ is x then the length of ABCD is 4 x , and if the width of WXYZ is y then the width of ABCD is 4 y . Then the areas are in a ratio of } (4 x x )( y 4 y ) } 5 } 16 xy xy } or 16 : 1. 54. } 4 1 } 5 } 4 1 ( ( 3 3 ) ) } 5 } 1 3 2 } or } 4 1 } . The ratio is still 4 : 1. 55. The ratio of the areas is still 16 : 1 since the ratio of the sides is still 4 : 1. 56. No; the corresponding sides are not in proportion. The ratio of the widths is 1 to 1 but the ratio of the heights is 2 to 1. 57. The widths are the same but the height of the 36% rectangle is twice the height of the 18% rectangle, so the ratio of the areas is
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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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