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2 years ago

Evaluate b – 2 a – c for a = –7, b = 3, and c = –7.

Mathematics

2 answers:

Valentin [98]2 years ago

8 0

Answer: 24

Step-by-step explanation:

Given :

b - 2a - c

a = - 7

b = 3

c = - 7

Substituting the values into the expression , we have

3 - 2 ( - 7 ) - ( - 7 )

⇒ 3 + 14 + 7

= 24

Lubov Fominskaja [6]2 years ago

7 0

Answer:

24 is the sum

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2 years ago

In an area of the Midwest, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushel

Liula [17]

Answer:

Option A is correct.

y = 35.4 bushels per acre when rainfall = 7.1 inches

Step-by-step explanation:

An image of the steps to obtain the equation that relates x to y is attached to this answer.

n = number of variables = 9

μₓ = mean of variable x (rainfall in inches)

μᵧ = mean of variable y (yield in bushels per acre)

σₓ = standard deviation of variable x (rainfall in inches)

σᵧ = standard deviation of variable y (yield in bushels per acre)

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2 years ago

Help i need an answer please dont answer if you are not positive

spayn [35]

What is the area of the shaded region and the circle inside?

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2 years ago

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Answer:

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3 years ago

A 99% confidence interval for the mean μ of a population is computed from a random sample and found to be 6 ± 3. We may conclude

valentina_108 [34]

Answer:

A. there is a 99% probability that μ is between 3 and 9.

Step-by-step explanation:

From a random sample, we build a confidence interval, with a confidence level of x%.

The interpretation is that we are x% sure that the interval contains the true mean of the population.

In this problem:

99% confidence interval.

6 ± 3.

So between 6-3 = 3 and 6 + 3 = 9.

So we are 99% sure that the true population mean is between 3 and 9.

So the correct answer is:

A. there is a 99% probability that μ is between 3 and 9.

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3 years ago

Read 2 more answers