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3 years ago

3r+n^2-r+5-2n+2 simplify

Mathematics

1 answer:

andrey2020 [161]3 years ago

4 0

$3r+n^2-r+5-2n+2=n^2-2n+(3r-r)+(5+2)\\\\=\boxed{n^2-2n+2r+7}$

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aleksandrvk [35]

Answer:

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3 years ago

The baseball coach is 70 inches tall. How tall is the child?

tankabanditka [31]

The child is <u>59.4 inches tall</u>, assuming the length from the coach's shoulder to his head cap is approximately 10 inches.

<h3>What is Heigth?</h3>

Height refers to the vertical distance between the top and bottom of something.

Height measures the length of some objects or persons vertically to determine whether it is high or low, according to some ascertained criteria.

<h3>Data and Calculations:</h3>

Baseball coach's height = 70 inches

Coach's shoulder to head = 10.6 inches

Height of the child standing slightly below the coach's shoulder = 59.4 inches (70 - 10.6)

Thus, the child standing slightly below the coach's shoulder is 59.4 inches tall.

Learn more about height measurements at brainly.com/question/73194

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<h3>Question Completion:</h3>

Assume that the height of the coach from his shoulder to the head is 10.6 inches.

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1 year ago

Which of the following numbers are irrational

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letter d is one of the irrational numbers

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3 years ago

What's the answer will give brainliest

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Step-by-step explanation:

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2 years ago

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Suppose that the hourly wages of fast food workers are normally distributed with an unknown mean and standard deviation. The wag

Nutka1998 [239]

Answer: 1.303639

Step-by-step explanation:

The t-score for a level of confidence $(1-\alpha)$ is given by :_

$t_{(df,\alpha/2)}$ , where df is the degree of freedom and $\alpha$ is the significance level.

Given : Level of significance : $1-\alpha:0.80$

Then , significance level : $\alpha: 1-0.80=0.20$

Sample size : $n=40$

Then , the degree of freedom for t-distribution: $df=n-1=40-1=39$

Using the normal t-distribution table, we have

$t_{(df,\alpha/2)}=t_{39,0.10}=1.303639$

Thus, the t-score should be used to find the 80% confidence interval for the population mean =1.303639

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3 years ago