230% of 99 hours is what?

Mathematics

2 answers:

Vesnalui [34]3 years ago

8 0

Answer:

227.7 hours

Step-by-step explanation:

of means multiply and is means equals

230% * 99 = what

Change the percent to decimal form

2.30 * 99 = what

227.7= what

grin007 [14]3 years ago

7 0

$\\ \sf\longmapsto 230\%\:of\:99$

$\\ \sf\longmapsto \dfrac{230}{100}\times 99$

$\\ \sf\longmapsto \dfrac{230(99)}{100}$

$\\ \sf\longmapsto \dfrac{22777}{100}$

$\\ \sf\longmapsto 227.7hours$

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Dear Math Helper,

valentina_108 [34]

Answer:

n = 98, that is, she scored at the 98th percentile.

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

She scored 38, so $X = 38$