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2 years ago

Given that a^b = x, evaluate the following: a^2b

Mathematics

1 answer:

kodGreya [7K]2 years ago

7 0

$\bf a^{2b}\implies a^{2\cdot b}\implies (a^2)^b\implies (a^b)^2\qquad \boxed{a^b=x}\qquad (x)^2\implies x^2$

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A sample of 20 account balances of a credit company showed an average balance of $1,170 and a standard deviation of $125. You wa

Lady_Fox [76]

Answer:

The P-value for this test is P=0.2415.

Step-by-step explanation:

We have to perform an hypothesis testing on the mean of alla account balances.

The claim is that the mean of all account balances is significantly greater than $1,150.

Then, the null and alternative hypothesis are:

$H_0: \mu=1150\\\\H_a: \mu>1150$

The sample size is n=20, with a sample mean is 110 and standard deviation is 125.

We can calculate the t-statistic as:

$t=\dfrac{\bar x-\mu}{s/\sqrt{n}}=\dfrac{1170-1150}{125/\sqrt{20}}=\dfrac{20}{27.95}=0.7156$

The degrees of freedom fot this test are:

$df=n-1=20-1=19$

For this one-tailed test and 19 degrees of freedom, the P-value is:

$P-value=P(t>0.7156)=0.2415$

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3 years ago

What is a division problem that has the answer 6?? 8th grade

nika2105 [10]

18/3=6
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3 0

2 years ago

Mr. Soto plans to open a savings account. Four banks offer the annual interest rates shown. Which list shows these interest rate

Delvig [45]

Ok, so IDK if I'm about to do this problem right, but here we go;

so first, lets change these all to decimals (I more of a decimal gal)

3 1/2 = 3.5
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3 3/5 = 3.6
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So now, just order them from greatest to least.

3.66666, 3.6, 3.5, 3.375.

Now, change them back to fractions.
3 2/3, 3 3/5, 3 1/2, 3 3/8

So, if I'm correct, the answer is 3 2/3%, 3 3/5%, 3 1/2%, 3 3/8%
Hopefully I solved your problem!

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3 years ago

Which of the following distinctions does Russia enjoy?

kap26 [50]

Answer:

A distinctions does Russia enjoy is explained below in details.

Step-by-step explanation:

About 11 percent of Russia is tundra, marshy plain, a treeless The tundra is Russia's northernmost zone.
Russia is the world's largest nation by landmass, It comprises nine separate time zones and shares land boundaries with 14 neighboring nations.
Russia a federative, democratic, law-based country with a republican model of government. State authority is distributed among the legislative, executive, and judicial divisions.

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2 years ago

Helooooo?!!!!! 30 whole points

pentagon [3]

Answer:

I believe C, or the answer you have chosen, is correct.

Step-by-step explanation:

In this question, we add like, AKA similar, terms.

There is nothing to match x^2, so we leave it alone and put it at the head of equation since it has the highest power:

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There is nothing to match -x, so we also leave it alone and put it next to x^2, keeping its sign:

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We can add 1 and 5 to get 6, so we put 6 next to the -x to get our final equation:

x^2 - x + 6.

See how easy that was? :) Hope this helps you and you get a good grade on your test!!

Please rate my answer and give me Brainliest!!!!

Have an awesome rest of your day! :)

7 0

2 years ago

Given that a­^­b = x, evaluate the following: a^2b

Given that a^b = x, evaluate the following: a^2b