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3 years ago

7

It took Lou 2 1/2 gallons of paint to paint one fence how many gallons of paint will it take glue to paint six fences that are t

he same size

2 answers:

DENIUS [597]3 years ago

3 0

2 1/2 times 6 the answer is 15 gallons

EleoNora [17]3 years ago

3 0

2.5*6=15 so the answer is 15

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Find the point estimate for the true difference between the given population means. Round your answer to three decimal places.

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Answer:

Point Estimate for different between population means = - 0.99

Step-by-step explanation:

We are given data of two samples and we have to find the best point estimate of the true difference between two population means. Remember that in absence of data about population the best estimator is the sample data. So, we will find the means of both sample data and find the difference of that means. This difference between the means of sample data will be the best point estimate for the true difference between the population means.

Formula to calculate the mean is:

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Mean of Sample 1:

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2 years ago

Read 2 more answers

Prove that an = 4^n + 2(-1)^nis the solution to

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Answer:

See proof below

Step-by-step explanation:

We have to verify that if we substitute $a_n=4^n+2(-1)^n$ in the equation $a_n=3a_{n-1}+4a_{n-2}$ the equality is true.

Let's substitute first in the right hand side:

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Now we use the distributive laws. Also, note that $(-1)^{n-1}=\frac{1}{-1}(-1)^n=(-1)(-1)^{n}$ (this also works when the power is n-2).

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$=4(4^{n-1})-6(-1)^{n}+8(-1)^{n}=4^n+2(-1)^n=a_n$

then the sequence solves the recurrence relation.

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