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3 years ago

Can you guys teach me how to do this??

Mathematics

1 answer:

Vadim26 [7]3 years ago

4 0

The usual margin of error we strive for is a 95% probability that our estimate is within the margin. Assuming a normal distribution (and that we have a big enough sample not to worry about t tests) that corresponds to between minus and plus two standard deviations of the mean (remember the 68-95-99.7 rule). So our margin of error is plus or minus two standard deviations.

Answer: ±2%

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100 POINTS FOR BRAINLIEST! according to the image, whats the answer? Answer wisely for the full 100

stepan [7]

Answer:

Step-by-step explanation:

1. To find the area of a semicircle the formula is

$A=\frac{\pi r^2}{2} \\=\frac{\pi 1^2}{2} \\=6.283m^2$

The square

$A=a^2=2^2=4m^2\\6.283+4=10.283m^2$

2. Triangle

$A=\frac{ab}{2} \\=\frac{6*2.5}{2} \\=7.5m^2\\7.5*2=15m^2$

Rectangle

$A=wl=8*13=104m^2$

$104-15=89m^2$

Semicircle

$A=\frac{\pi r^2}{2} \\=\frac{\pi 3^2}{2} \\\\=14.137m^2$

Square

$A=a^2=6^2=36$

$36-14.137=21.863m^2$

3 0

3 years ago

Read 2 more answers

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Akimi4 [234]

Idk you kno I am trying to get points right

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3 years ago

How much bigger is 3/8 than 1/3 answer as a fraction

alekssr [168]

You would first need to find a common denominator for 3/8 and 1/3 the common denominator would be 24 because 8 times three is 24 and 3 times 8 is 24. After you find your common denominator your fraction becomes 9/24 + 8/24. This gives you 17/24.

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3 years ago

Would you use an open circle or a closed circle to graph the inequality x> 3?

12345 [234]

Answer:

Open circle

Step-by-step explanation:

If the inequality has < or > it is an open circle.

If the inequality has =< or >= it is closed

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3 years ago

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A store offers discounts on lunch-size chip bags when buying larger quantities. The graph below represents the total cos

Ivenika [448]

The difference in the price per bag for 150 bags versus 50 bags is $0.05 per bag

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

From the diagram:

Price for 150 bag = $38

Cost per bag = $40 / 150 = $0.25

Also:

Price for 50 bag = $15

Cost per bag = $15 / 50 = $0.30

Difference in price = $0.30 - $0.25 = $0.05

The difference in the price per bag for 150 bags versus 50 bags is $0.05 per bag

Find out more on equation at: brainly.com/question/2972832

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2 years ago