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Otrada [13]
3 years ago
9

I need help and the answer to #9

Mathematics
1 answer:
alex41 [277]3 years ago
8 0

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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Step-by-step explanation:

For A: A is clearly false because you can multiply any fraction and it doesnt matter what the denominator is.

For B: The first part is correct, which is that to multiply two fractions, they dont have to have like/common denominators, the explanation part is also correct. When we multiply we multiply the numerator to the numerator and the denominator to the denominator.

For C: C is false because the first part says yes and we know that you can multiply any 2 fractions regardless of denominators.

For D: For D the first part is correct however, the explanation section is false you dont multiply the numerator to the denominator.

For E: You don't have to find the equivalent fraction to multiply because you can do that afterward.

I hope this helps, have a blessed day! :D

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