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DENIUS [597]
3 years ago
8

Area of a triangle who sides are 7 8 and 9Is it 28, 24, 26.8, or 312.9 Sq ft

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
6 0
Its acute scalene triangle with the area of 26.8 Hope I helped! -Lizzy
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The weekly salaries of sociologists in the United States are normally distributed and have a known population standard deviation
netineya [11]

THIS IS THE COMPLETE QUESTION BELOW;

The weekly salaries of sociologists in the United States are normally distributed and have a known population standard deviation of 425 dollars and an unknown population mean. A random sample of 22 sociologists is taken and gives a sample mean of 1520 dollars.

Find the margin of error for the confidence interval for the population mean with a 98% confidence level.

z0.10 z0.05 z0.025 z0.01 z0.005

1.282 1.645 1.960 2.326 2.576

You may use a calculator or the common z values above. Round the final answer to two decimal places.

Answer

Margin error =210.8

Given:

standard deviation of 425

sample mean x=1520 dollars.

random sample n= 22

From the question We need to to calculate the margin of error for the confidence interval for the population mean .

CHECK THE ATTACHMENT FOR DETAILED EXPLANATION

4 0
3 years ago
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julsineya [31]

Answer: 41 vans will be needed.

Step-by-step explanation:

There are a total of 492 campers. We know that each van can hold a total of 12 passengers.

So, simply divide 492 by 12 to get the total amount of vans needed.

492/12 = 41 vans.

8 0
3 years ago
What percent is equal to the decimal 0.13?<br><br> A. 0.013%<br> B. 1.3%<br> C. 13%<br> D. 130%
mario62 [17]
0.13 <== the decimal is in the tenth place.

We could also say it is equal to

13/100

Or, 

"C" 13%

I hope this helps!
~kaikers
3 0
3 years ago
Read 2 more answers
Rewrite the equation 2y+3x=4 in slope-intercept form. then find the slope and y-intercept
Zinaida [17]

Answer:

y=  -3/2-2

Step-by-step explanation:

7 0
3 years ago
A cube can be unfolded into the net shown below. Find the total
melisa1 [442]

Answer:

23.9 mm

Step-by-step explanation:

A cube can be unfolded into the net shown below. Find the total

surface area of the cube.

23.9 mm

7 0
3 years ago
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