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3 years ago

Which graph shows the solution set of x^2+9x+20/x^2-x-20>0

Mathematics

2 answers:

Alja [10]3 years ago

3 0

Answer:

The answer on Edg. is B, (it has a closed circle at -5 with an arrow pointing to the left, and it has an open circle at 5 going to the right) . Hope this helps good luck!

damaskus [11]3 years ago

3 0

Answer:

B or the second choice on Edgenuity.

Step-by-step explanation:

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3 years ago

A simple random sample of 144 observations was taken from a large population. The sample mean and the standard deviation were de

Vera_Pavlovna [14]

Answer:

The standard error of mean = 10

Step-by-step explanation:

Given a simple sample of 144 observations was taken from a large population.

The size of large sample 'n' = 144

Given sample mean and the standard deviation were determined to be 1234 and 120 respectively.

Given standard deviation of sample (S) = 120

The standard error of mean is determined by

$SE (X^{-} ) = \frac{S.D}{\sqrt{n} }$

$SE (X^{-} ) = \frac{120}{\sqrt{144} } = 10$

<u>Final answer</u>:-

The standard error of mean = 10

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3 years ago

Which of the following is an arithmetic sequence with common difference –5?

Vlad [161]

The arithmetic sequence that has a common difference of -5 from the options given is: A. 8, 3, -2, -7...

<h3>What is the Common Difference of an Arithmetic Sequence?</h3>

The common difference of an arithmetic sequence is determined as: a term - previous term.

For the sequence, 8, 3, -2, -7,.. the common difference is:

-7 - 2 = -2 - 3 = 3 - 8 = -5.

Therefore, the arithmetic sequence with a common difference of -5 is: A. 8, 3, -2, -7...

Learn more about common difference on:

brainly.com/question/503167

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2 years ago