23-10-2017
Mathematics

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I need help and the answer to #9

I need help and the answer to 9 class=

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musiclover10045 musiclover10045

23-10-2017

perimeter of rectangle = 20+20 +15+15 = 70 yards = 70*3 = 210 feet

210/5 = 42 seconds

Courtney walks it in 42 seconds

the diagonal = 15^s + 20^2 = 225+400=625

sqrt(625) = 25 yards

Natalie walks 20 +15 +25 = 60 yards

60*3 = 180 feet

180 /5 =36 seconds

42 - 36 = 6 seconds faster

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