3 years ago

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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3 years ago

∆JKL~∆MNO and J/K MN =2/3 find the length of NO if KL=12.

Gre4nikov [31]

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Step-by-step explanation:

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∆JKL~∆MNO and

$\dfrac{JK}{MN}=\dfrac{2}{3}$

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the length of NO = ?

Solution:

Δ JKL ~ Δ LMN ….{Given)

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$\dfrac{JK}{MN} =\dfrac{KL}{NO}=\dfrac{JL}{MO} \textrm{corresponding sides of similar triangles are in proportion}\\$

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