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3 years ago

6. Brandom can swim 15 laps around the pool in 40 minute. Peter can swim 10 laps in 25 minutes.

Mathematics

1 answer:

wel3 years ago

3 0

Answer:

A. Brandon can swim 0.375 laps every minute and Peter can swim 0.4 laps a minute.

B. Brandon 0.375 laps a minute Peter 0.4 laps a minute

C. Peter will swim 20 laps first I know because the rate at which he swims is faster than Brandon's

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Alenkinab [10]

Answer:

Standard deviation of given data = 3.16227

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 5

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Mean of the sample x⁻ = 8

Standard deviation of the sample

$S.D = \sqrt{\frac{Sum(x-x^{-} )^{2} }{n-1}}$

Step(ii):-

Given data

x : 4 6 8 10 12

x-x⁻ : 4 - 8 6-8 8-8 10-8 12-8

(x-x⁻) : -4 -2 0 2 4

(x-x⁻)² : 16 4 0 4 16

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