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3 years ago

What is 10 to the 2nd power

Mathematics

2 answers:

tino4ka555 [31]3 years ago

5 0

The answer is 100 .:/

statuscvo [17]3 years ago

3 0

10 to the 2nd power is 100

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Jill and Erika made 5 gallons of lemonade for their lemonade stand.

julia-pushkina [17]

Part 1: 4 quarts in a gallon
4 * 5 = 20 quarts

Part 2: 20 * 2 = 40
They will make $40.00

8 0

3 years ago

ema scores 72 marks out of 80 in her inglesh exam convert into 90 percent what is the answer step by step

FrozenT [24]

(72/80)x90=81
Divide seventy-two by eight and multiply it Ninety.

5 0

2 years ago

Read 2 more answers

Sin230° = _____ -sin50° sin50° sin130°

likoan [24]

Sin230=sin(180+50)=sin180cos50+cos180sin50=-sin50 answer 1

8 0

3 years ago

A random sample of 84 students at a university showed an average age of 22 years and a sample standard deviation of 3 years. Fin

Debora [2.8K]

Answer:

The margin of error for the 94% confidence interval is 0.6154.

Step-by-step explanation:

The (1 - α)% confidence interval for population mean is:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}$

The margin of error of this interval is:

$MOE=z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}$

The critical value of z for 94% confidence level is, z = 1.88.

Compute the margin of error for the 94% confidence interval as follows:

$MOE=z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}$

$=1.88\times\frac{3}{\sqrt{84}}\\\\=0.6154$

Thus, the margin of error for the 94% confidence interval is 0.6154.

7 0

2 years ago

One pipe can fill a pool in 9 hours. Another pipe can fill the pool in 6 hours. How long would it take them to fill the pool if

kow [346]

Answer:

3.6 hours or 3 hours and 36 minutes.

Step-by-step explanation:

If the first pipe can fill the pool in 9 hours that means that in 1 hour it fills $\frac{1}{9}$ of the pool, we use the same logic for the second pipe and conclude that in 1 hour it feels up $\frac{1}{6}$ of the pool. If both were to fill the pool together that means that in 1 hour they would fill...

$\frac{1}{9} +\frac{1}{6} = \frac{5}{18}$ of the pool in 1 hour.

Now to find how many hours it will take divide the pool by the speed with which it is getting filled.

$1 / \frac{5}{18} = 3.6$ hours

3.6 hours in other words is 3 hours and 36 minutes.

3 0

2 years ago