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4 years ago

Rewrite each question aan algebraic expression.what is the sum of a and 8

Mathematics

1 answer:

Iteru [2.4K]4 years ago

3 0

The algebraic expression is a+8

Step-by-step explanation:

We need to rewrite each question as algebraic expression.

The question is:

what is the sum of a and 8

The algebraic expression is:

Sum is denoted by + sign

So, a+8

The algebraic expression is a+8

Keywords: Algebraic expression

Learn more about algebraic expression at:

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A group of 59 randomly selected students have a mean score of 29.5 with a standard

algol [13]

Answer:

$29.5-1.671\frac{5.2}{\sqrt{59}}=28.37$

$29.5+1.671\frac{5.2}{\sqrt{59}}=30.63$

And we can conclude that the true mean for the scores are given by this interval (28.37; 30.63) at 90% of confidence

Step-by-step explanation:

Information given

$\bar X = 29.5$ represent the sample mean

$\mu$ population mean

s= 5.2 represent the sample standard deviation

n=59 represent the sample size

Confidence interval

The confidence interval for the true mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=59-1=58$

The Confidence interval is 0.90 or 90%, the significance is $\alpha=0.1$ and $\alpha/2 =0.05$ , and the critical value is $t_{\alpha/2}=1.671$

Now we have everything in order to replace into formula (1):

$29.5-1.671\frac{5.2}{\sqrt{59}}=28.37$

$29.5+1.671\frac{5.2}{\sqrt{59}}=30.63$

And we can conclude that the true mean for the scores are given by this interval (28.37; 30.63) at 90% of confidence

8 0

3 years ago

What is answer for 10+(3+4-6+8) by using order of operation

Zina [86]

Answer:

The value of given expression is 19.

Step-by-step explanation:

The given expression is

$10+(3+4-6+8)$

According to the rule of BODMAS the order of operations is Bracket, Of, Division, Multiplication, Addition and Subtraction.

First we have to simplify the value of bracket.

$10+(3+4-6+8)=10+(15-6)$

$10+(3+4-6+8)=10+9$

$10+(3+4-6+8)=19$

Therefore the value of given expression is 19.

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3 years ago

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sergejj [24]

It can help you by checking your answer

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3 years ago

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iVinArrow [24]

Answer:

f (x) = 4,500 + 250x; 24 months

Step-by-step explanation:

Because 10,500 - 4,500 = 6,000

6,000 / 250 = 24

Hope this helped

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3 years ago

Segments CD, GH, and JK intersect point A.

sladkih [1.3K]

Answer: HK

Step-by-step explanation:

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3 years ago

Rewrite each question aan algebraic expression.what is the sum of a and 8​

Rewrite each question aan algebraic expression.what is the sum of a and 8