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3 years ago

Solve the following absolute value equation | x+5 | = 11

Mathematics

2 answers:

Pie3 years ago

6 0

Answer:

x = 6

Step-by-step explanation:

Simplify: x + 5 = 11
Subtract 5 from each side, so it now looks like this: x = 6

I hope this helps!

Mazyrski [523]3 years ago

5 0

Answer:

X is 6 or -6

Step-by-step explanation:

In absolute value it makes everything positive

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What is 75% of 162? Show your work and/or explain your reasoning.

zhannawk [14.2K]

Answer:

121.5

Step-by-step explanation:

75% = 75/100

Step 2 - Mutiply percenatge fraction by the entire (100%) quantity

75/100× 162 = 121.5

Final result

75 percent of 162 is 121.5

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2 years ago

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xxMikexx [17]

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3 years ago

A human resources representative claims that the proportion of employees earning more than $50,000 is less than 40%. To test thi

bearhunter [10]

Answer:

The statistic for this case would be:

$z=\frac{\hat p -p_o}{\sqrt{\frac{\hat p(1-\hat p)}{n}}}$

And replacing we got:

$z= \frac{0.436-0.4}{\sqrt{\frac{0.436*(1-0.436)}{700}}}= 1.92$

Step-by-step explanation:

For this case we have the following info:

$n =700$ represent the sample size

$X= 305$ represent the number of employees that earn more than 50000

$\hat p=\frac{305}{700}= 0.436$

We want to test the following hypothesis:

Nul hyp. $p \leq 0.4$

Alternative hyp : $p>0.4$

The statistic for this case would be:

$z=\frac{\hat p -p_o}{\sqrt{\frac{\hat p(1-\hat p)}{n}}}$

And replacing we got:

$z= \frac{0.436-0.4}{\sqrt{\frac{0.436*(1-0.436)}{700}}}= 1.92$

And the p value would be given by:

$p_v = P(z>1.922)= 0.0274$

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3 years ago

You have seventy-nine $10 chips. The chips have a value of $ ??

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1 chip is $10
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