ANSWER THOROUGHLY AKA WELL I NEED GOOD EXPLANATION

Mathematics

2 answers:

kkurt [141]3 years ago

6 0

Answer:

Lelia should be chosen.

Step-by-step explanation:

Leila: 3 laps is going to be 3/5 x 3, which is 9/5. So she can run 1 4/5 in 7 minutes.

Maria: 1 lap is going to be 3/5. So she can run 3/5 in 3 minutes.

If you multiply 3/5 by 2, you're going to get 6/5 in 6 minutes, and then divide it by 6, which is going to give you 1/5 of a lap in 1 minute, multiply that by 7, and get 7/35. This is for Maria. If you divide 9/5 by 7, you're going to get 9/35. This is for Lelia.

Maria: 7/35 of a lap in 1 minute.

Lelia: 9/35 of a lap in 1 minute.

Lelia should be chosen.

zimovet [89]3 years ago

5 0

I would choose lelia because she might have taken longer but maria ran 1 lap lelia ran 3 so lelia can run 2 1/4 (or (1/3) times faster

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Mars2501 [29]

Answer:

See explanation

Step-by-step explanation:

1. Given the expression

$\dfrac{\sqrt[7]{x^5} }{\sqrt[4]{x^2} }$

Note that

$\sqrt[7]{x^5}=x^{\frac{5}{7}} \\ \\\sqrt[4]{x^2}=x^{\frac{2}{4}}=x^{\frac{1}{2}}$

When dividing $\sqrt[7]{x^5}$ by $\sqrt[4]{x^2},$ we have to subtract powers (we cannot subtract 4 from 7, because then we get another expression), so