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devlian [24]
4 years ago
14

One hundred percent of the scores in a normal distribution fall within plus or minus two standard deviations of the mean.

Mathematics
1 answer:
FromTheMoon [43]4 years ago
3 0
This is wrong:

68% fall within plus or minus ONE standard deviation

95% fall within plus or minus TWO standard deviation

99.7% fall within plus or minus THREE standard deviation
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Find the surface area of the figure shown,<br> correct to 2 decimal places.
agasfer [191]

Answer:

230.73m^2

Step-by-step explanation:

A=2a^2+4ah=2*4^2+4*4*4=96m^2 (square prism)

A=2\pi rh+2\pi r^2=2*\pi *4*9+2*\pi *4^2 = 326.73m^(cylinder)

326.73-96=230.73m^2 (\frac{3}{4} cylinder)

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3 years ago
Can someone help me with this problem please? I'll mark you as brainliest!
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Simplify: 0.810×0.00048 all over 0.000400×0.027
elixir [45]

Answer:

36

Step-by-step explanation:

Okay! This question is a very simple one, but without a calculator, your answer could easily vary from others! So, let´s do this one together!

The equation:

0.810x0.00048/0.000400x0.027

Let´s do the top :

0.810 x 0.00048 = 0.0003888

I will leave these numbers the same until the last part, lets not round them.

Bottom:

0.0004 x 0.027 = 0.0000108

And again I am not going to round this number.

Now we can divide!

0.0003888/0.0000108 = 36

I hope this helped!

4 0
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Jimmy recently bought a car. It originally cost $28,000.00 and he received a
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none of the given answers make sense, the answer would be 4,200

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3 years ago
A population is currently
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Answer:

Step-by-step explanation:

The current world population is 7.9 billion as of July 2021 according to the most recent United Nations estimates elaborated by Worldometer. The term "World Population" refers to the human population (the total number of humans currently living) of the world.

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