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3 years ago

I need to find measure of angle "u" m

Mathematics

1 answer:

Phoenix [80]3 years ago

7 0

Can you take a better Pic? I can’t see the values.

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Beth poured the same amount of juice into 10 glasses. She used 2 quarts of juice. How much juice is in each glass?

tia_tia [17]

Answer:

6.4 ounces

Step-by-step explanation:

If you divide 2 quarts by 10 you get 0.2 quarts per glass. That converts to 6.4 ounces.

5 0

3 years ago

Read 2 more answers

The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day.

valina [46]

Answer:

A sample of 179 is needed.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.85}{2} = 0.075$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.075 = 0.925$ , so Z = 1.44.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

A previous study found that for an average family the variance is 1.69 gallon?

This means that $\sigma = \sqrt{1.69} = 1.3$

If they are using a 85% level of confidence, how large of a sample is required to estimate the mean usage of water?

A sample of n is needed, and n is found for M = 0.14. So

$M = z\frac{\sigma}{\sqrt{n}}$

$0.14 = 1.44\frac{1.3}{\sqrt{n}}$

$0.14\sqrt{n} = 1.44*1.3$

$\sqrt{n} = \frac{1.44*1.3}{0.14}$

$(\sqrt{n})^2 = (\frac{1.44*1.3}{0.14})^2$

$n = 178.8$

Rounding up

A sample of 179 is needed.

7 0

3 years ago

A triangle has an area of 80 yards and a height of 10 yards how long is the base of the triangle

Wewaii [24]

16 yards is your answer for this!
its 2 with area/hight.
if you need the steps of this just ask ill show you how to do it step by step

5 0

2 years ago

Irrational number formula

alexgriva [62]

Answer:

hope it helps.

stay safe healthy and happy.

3 0

2 years ago

A number that, when multiplied with another number, yields a result of 1 is called its multiplicative ____.

Aliun [14]

Answer:

multiplicative inverse

Step-by-step explanation:

A number that is multiplied by it's multiplicative inverse equals one.

A multiplicative inverse is also called a reciprocal.

Example:

1/7 is 7's multiplicative inverse.

$\frac{7}{1} *\frac{1}{7} =\frac{7}{7} =1$

5 0

2 years ago

Read 2 more answers