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3 years ago

8

For exercise, Francesca walks laps around a track. She walked 1 lap around the track in 4 minutes. If each lap is 440 yards, how

fast did Francesca walk?
A.
125 yards per minute
B.
110 yards per minute
C.
400 yards per minute
D.
44 yards per minute

1 answer:

sleet_krkn [62]3 years ago

4 0

The answer is B, 110 yards per minute. This is because 440 divided by 4 minutes is 110 minutes

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What does y equal?

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Answer:

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Step-by-step explanation:

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3 years ago

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4 years ago

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S_A_V [24]

Answer:

81

Step-by-step explanation:

The formula for calculating the sum of geometric series varies depending on the value of its common ratio.

Given the common ratio to be 2/3 which is less than 1, the formula to be used is given as;

Sn = a(1-rⁿ)/1-r

n is the number of terms of the series

a is the first term

r is the common ratio.

Sn is the sum of the series

Given n = 3, r = 2/3 and Sn = 171,

a= ?

Substituting this values in the formula we have;

171 = a{1-(2/3)³}/1-2/3

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171 = 19a/27 × 3/1

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a = 4,617/57

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

The answer is D. Selections of objects in which the order of the objects matters.

Step-by-step explanation:

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$nPr= \frac{n!}{(n-r)!}$

Permutation can be classified in three different categories:

Permutation of (n) different objects (when repetition is not allowed)

Repetition, where repetition is allowed

Permutation when the objects are not distinct (Permutation of multi sets)

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3 years ago