A dog trainer is building a dog run that measures 9 × 16 feet.If she wants to fence the perimeter of the run, how many feet of chain link fence will she need?
Answer(s): D
Calculate perimeter by adding the lengths of all four sides of a quadrilateral: 9 + 9 + 16 + 16 = 50 feet.
A rectangle is 11/2 times as long as it is wide. The perimeter of the rectangle is 100 inches.What's the length of the rectangle?
Answer(s): B
The formula for the perimeter of a rectangle is P = 2L + 2W. In this case, P = 100 and L = 1.5W.100 = 2(1.5W) + 2W100 = 3W + 2W100 = 5WW = 100/5W = 20.The width of the rectangle is 20 inches. Because the length is 11/2 the width, 1.5 × 20 = 30.
Miguel passed seven of his history class quizzes and failed three.The fraction of quizzes he passed is correctly expressed as __________.
Answer(s): C
The total number of quizzes is 10. If he passed seven of them, the fraction would be expressed as 7/10.
A 3-yard-long ribbon was used to trim four dresses. Each dress used the same amount of ribbon.How much ribbon was used for each dress?
Convert the measurement to inches: 1 yard = 36 inches; 36 inches × 3 = 108 inches.Divide the total number of inches by the number of dresses being trimmed to determine the length of each piece of ribbon: 108 inches ÷ 4 = 27 inches. Convert the quotient (27 inches) to a fraction of a yard: 27/36 = 27 ÷ 36 = 75% = 3/4 of a yard.
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