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3 years ago

Robin says that polynomials are closed under division. Brad adamantly disagrees. Who is correct? Justify your answer.

1 answer:

6 0

Brad is correct.

Polynomials do not include negative exponents; this means there can be no variables in the denominator. If two polynomials do not divide evenly, the remainder is written as a fraction with the divisor (which can include a variable) in the denominator. This is not a polynomial.

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You purchase a car using a 20,000 loan with a 5% interest rate suppose you pay the loan off after 4 years how much interest do y

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In 4 years you pay interest of 4000 and if you finish pay the loan in two years you pay only 2000

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3 years ago

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Lenora is using the recipe shown to make salad dressing for a salad.She wants to make 20 batches of the recipe.How much vegetabl

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She is using 1/3 of vegatable oil and 1/4 of vinegar.

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3 years ago

Abe is going to plant 54 oak trees and 27 pine trees.

lord [1]

Answer: There are 27 trees he can plant in one row. There is one pine tree and 2 oak trees in each row

Step-by-step explanation:

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3 years ago

A simple random sample of 60 items resulted in a sample mean of 65. The population standard deviation is 14. a. Compute the 95%

bazaltina [42]

Answer:

The 95% confidence interval for the population mean is between 61.5 and 68.5.

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:

$\alpha = \frac{1-0.95}{2} = 0.025$

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

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find 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.

$M = 1.96*\frac{14}{\sqrt{60}} = 3.5$

The lower end of the interval is the sample mean subtracted by M. So it is 65 - 3.5 = 61.5

The upper end of the interval is the sample mean added to M. So it is 65 + 3.5 = 68.5

The 95% confidence interval for the population mean is between 61.5 and 68.5.

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2 years ago

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Jason bought 12 new CDs to add to his

BabaBlast [244]

Answer:

He had origanlly had 68 altogether

Step-by-step explanation:

Because if u count the scrateched ones which was 6 is now 62 then add the other six because there was 12 and his brother scrateched half which is basically 12 / 2 = 6 so if u add the six is 68

What Im basically saying is 56 + 12 = 68

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2 years ago