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Tom [10]
3 years ago
8

Simplify square root of 8y/share root of y

Mathematics
1 answer:
lozanna [386]3 years ago
8 0

Answer:

2\sqrt{2}

Step-by-step explanation:

We are required to simplify the following expression;

\frac{\sqrt{8y} }{\sqrt{y} }

Using the properties of radicals;

\frac{\sqrt{a} }{\sqrt{b}}=\sqrt{\frac{a}{b} }

The expression can be re-written as;

\sqrt{\frac{8y}{y}}=\sqrt{8}

Now;

\sqrt{8}=\sqrt{4*2}=\sqrt{4}*\sqrt{2}\\ \\2\sqrt{2}

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Three potential employees took an aptitude test. Each person took a different version of the test. The scores are reported below
Anastaziya [24]

Answer:

Nico

Step-by-step explanation:

In order to compare who had the best performance on the aptitude test, we can use Z score. Z score indicates how many standard deviation a result  is over the mean. For this case the higher the result is, the best is the performance on the aptitude test.

Z score is expressed with the following formula:

Z=(X-μ)/σ

Where:

X is the test score

µ is the mean

σ is the standard deviation

Replacing in the formula we obtained

For Nico:

X = 88.3

µ = 66.2

σ = 13

Z=(88.3-66.2)/13=1.7

For Justin:

X = 226.2

µ = 216

σ = 17

Z=(226.2-216)/17=0.6

For Tera:

X = 7.97

µ = 7.2

σ = 0.7

Z=(7.97-7.2)/0.7=1.1

Nico had the higher Z score which means he had the better performance on the test and he should be offered the job.

3 0
3 years ago
&lt;3 is a complement of &lt;2, and m&lt;3=80°.<br> Find m&lt;2.
Sedaia [141]

Answer:

m<2 = 100 degrees

Step-by-step explanation:

complement angles are equal to 180.

so, 180 - 80 = 100

4 0
3 years ago
I really need help and fast
tamaranim1 [39]
I believe the correct answer is C
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