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frosja888 [35]
3 years ago
7

Solve for x. -3(x+n)=x

Mathematics
1 answer:
marusya05 [52]3 years ago
3 0

Answer:

x = 3/4 n

Step-by-step explanation:

-3(x+n)=x

Distribute

-3x-3n = x

Add 3x to each side

-3x-3n+3x= x+3x

3n = 4x

Divide by 4

3/4n = 3x/3

3/4 n = x

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A simple random sample of 60 is drawn from a normally distributed population, and the mean is found to be 28, with a standard de
QveST [7]

The value of 27 is within 95% confidence interval because it is greater than 26.7 and less than 29.3.

<h3>What is a confidence interval?</h3>

In statistics, a confidence interval is a range to estimate for unknown terms.

The most common level is the 95% confidence interval.

It can be calculated by

CI = Mean ± margin of error.

α = 1 - 0.95 = 0.05

α/2 = 0.025

z(0.025) = 1.96

We need to find the \frac{\sigma}{\sqrt{n} }

\frac{5}{\sqrt{60} } = 0.645

So,

z \times \frac{\sigma}{\sqrt{n} } = 1.96 × 0.645

CI =1.26

C.I= 28±1.2652

Upper limit = 28+1.2652

                  =29.2625

Lower limit =28-1.2652

                   =26.7348

Hence, The value of 27 is within 95% confidence interval because it is greater than 26.7 and less than 29.3.

Learn more about confidence intervals;

brainly.com/question/12899226

5 0
2 years ago
Could someone please help me with this, I’ve been stressed over it all day, I just have 2 left.
Allisa [31]

Answer:

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Function 1
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Answer:

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4 0
3 years ago
At a school
Snowcat [4.5K]

Answer:

1600

Step-by-step explanation:

b : g : total

9 : 7 : 16

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3 years ago
Shown below are the steps a student took to solve the simple interest formula A = P(1 + rt) for r.
asambeis [7]

To solve A = P(1 + rt) for r, first isolate (1 +rt) by dividing both sides of this equation by P:

A/P =  1 + rt.

Next, isolate rt by subtracting 1 from both sides:

A/P - 1 = rt

Finally, divide both sides by t:

A/P - 1

----------- = r

    t

This could be written in other formats, such as:

A - P

-------- = r

Pt


7 0
3 years ago
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