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2 years ago

(3?2)+(4?1)to the power of 2=10

Mathematics

1 answer:

Advocard [28]2 years ago

3 0

Sol_

( 3 - 2 ) + ( 4 - 1 ) ^ 2

= 1 + 3^2

= 1 + 9

= 10

Answer is " - " .

hope it helped !

Thanks!

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FrozenT [24]

Answer:

a) 23.0769% increase

b) 9.375% decrease

Step-by-step explanation:

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2 years ago

Suppose that the walking step lengths of adult males are normally distributed with a mean of 2.5 feet and a standard deviation o

Hitman42 [59]

Answer:

0.0668 = 6.68% probability that an individual man’s step length is less than 1.9 feet.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Normally distributed with a mean of 2.5 feet and a standard deviation of 0.4 feet.

This means that $\mu = 2.5, \sigma = 0.4$

Find the probability that an individual man’s step length is less than 1.9 feet.

This is the p-value of Z when X = 1.9. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{1.9 - 2.5}{0.4}$

$Z = -1.5$

$Z = -1.5$ has a p-value of 0.0668

0.0668 = 6.68% probability that an individual man’s step length is less than 1.9 feet.

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2 years ago

Ben claims that 12 is a factor of 24. how can you check whether he is correct

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3 years ago

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2 years ago

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