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seraphim [82]
1 year ago
10

What is the answer to this equation?

Mathematics
1 answer:
My name is Ann [436]1 year ago
4 0

Answer:W ^10

Step-by-step explanation:

The solution is in the

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Suppose the time to complete a 200-meter backstroke swim for female competitive swimmers is normally distributed with a mean μ =
hammer [34]

Answer:

The swimmer must complete the 200-meter backstroke in no more than 130 seconds.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 141, \sigma = 7

Fastest 6%

At most in the 6th percentile, that is, at most a value of X when Z has a pvalue of 0.07. So we have to find X when Z = -1.555.

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

-1.555 = \frac{X - 141}{7}

X - 141 = -1.555*7

X = 130

The swimmer must complete the 200-meter backstroke in no more than 130 seconds.

3 0
3 years ago
Please answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!
tatiyna

Answer:

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Step-by-step explanation:

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5 0
3 years ago
If half of a pie is eaten what part remains
Alexandra [31]
It depends on the fraction. If it is 10nth of a pie then it would be 5/10 if it is two then 1/2
4 0
3 years ago
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What percent is 50 of 40?
gayaneshka [121]
50% of 40 is 20.
40/2 =50.
Just divide the number by 2 anytime it asks for 50%.
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Which of the following properties is always true for a parallelogram and why ?
posledela
A. Diagonals bisect each other is always true. Each diagonal<span> cuts the </span>other<span> into two equal parts. It is because of the parallel lines in the parallelogram. </span>
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2 years ago
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