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Sophie [7]
2 years ago
10

How do you write 21/30 as a percent? Please show how to do it :D

Mathematics
2 answers:
Helen [10]2 years ago
6 0
It would be 0.7 lol :)
AveGali [126]2 years ago
3 0

Answer:

70 %

Step-by-step explanation:

= 21/30 = 0.7

= 0.7 * 100

= 70%

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Answer:

His jump was of 272.45 inches

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 = 263, \sigma = 14

75th percentile

X when Z has a pvalue of 0.75. So X when Z = 0.675

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

0.675 = \frac{X - 263}{14}

X - 263 = 14*0.675

X = 272.45

His jump was of 272.45 inches

7 0
3 years ago
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Answer:

$1920

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Hello,

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