Need help with z-scores

Mathematics

2 answers:

zysi [14]3 years ago

6 0

hope this helps b.0.8937

ira [324]3 years ago

5 0

You need to look up the areas corresponding to the z-scores on a Standard Normal Distribution table. Using a table which gives areas to the LEFT of the z-score we work out the above shaded region area as follows

area = area to left for z score 0.85 - area to left for z score -1.2

= 0.8023 - 0.1151 = 0.6827

Its Option D.

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The smartest person can only help with the method please help <br> 3 1/4 divided by 2

nevsk [136]

Answer:

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Step-by-step explanation:

first make 3 1/4 into an improper fraction

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6 0

3 years ago

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Pepsi [2]

Answer:

Step-by-step explanation:

Two lines are perpendicular if the first line has a slope of $m$ and the second line has a slope of $\frac{1}{-m}$ .

With this information, we first need to figure out what the slope of the line is that we're given, and then we can determine what the slope of the line we're trying to find is:

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We now know that $m = \frac{5}{2}$ for the first line, which means that the slope of the second line is $m = \frac{-2}{5}$ . With this, we have the following equation for our new line: