How to solve 2 step equations. PLZ HELP!!!

Mathematics

2 answers:

4vir4ik [10]3 years ago

4 0

A two step equation for what.<span />

mr_godi [17]3 years ago

4 0

You start off with the coefficient (or number that stands alone) by doing the inverse operation, if it's being added you subtract it on both sides. Then, you do the inverse operation of the number with a variable such as multiplication or division. When doing that step you should be left with the variable and the equal sign with the final answer.

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27. The average hourly wage of workers at a fast food restaurant is $7.25/hr

morpeh [17]

Answer:

0.0668 = 6.68% probability that the worker earns more than $8.00

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.

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This means that $\mu = 7.25, \sigma = 0.5$