Mathematics: Noah runs 15 feet per second. jake runs 101 feet in 8 seconds. debbie runs 1 mile in 45 seconds. stephanie runs 869 feet in 1 minute. who runs the fastest?

Noah runs 15 feet per second. jake runs 101 feet

Ответ:

jagger68

26.05.2020

Given that 1 mile is 5280 feet, we know that Stephanie is already not the fastest. 15 × 60 = 900, so Noah is also not the fastest. 60 / 8 = 7 1/2, 7 1/2 * 101 = 757 1/2, so Jake is the slowest. Running 1 mile in 45 seconds, Debbie is the fastest.

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Ответ:

sana20

24.07.2022

Mathematics

DE = 1.1, BC = 4.8,DF = 1.6

Step-by-step explanation:

We have ∠A=∠E and ∠C=∠F, so ∠B=∠D.

So triangles △ABC and △DEF are similar triangles.

We have

$\frac{BC}{DF} =\frac{AB}{DE} =\frac{AC}{EF} \\ \\\frac{BC}{DF} =\frac{AB}{DE} =\frac{6}{2} =3\\\\\frac{3.3}{DE} =3, DE=\frac{3.3}{3}=1.1\\ \\\frac{BC}{DF} =3,\frac{BC}{BC-3.2} =3,2BC=9.6, BC=4.8,DF=4.8-3.2=1.6$

DE = 1.1, BC = 4.8,DF = 1.6

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Noah runs 15 feet per second. jake runs 101 feet in 8 seconds. debbie runs 1 mile in 45 seconds. stephanie runs 869 feet in 1 minute. who runs the fastest?

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