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Pepsi [2]
3 years ago
5

HELP AGAIN!!! Plzzzzz thank you!!!

Mathematics
1 answer:
never [62]3 years ago
6 0
Absolute value of -1/3 is 1/3
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Find the perimeter of the polygon.<br> 4 ft<br> 7 ft
bazaltina [42]

Answer:

Step-by-step explanation:

perimeter = 2(4ft+7ft) = 2*11ft = 22ft

5 0
3 years ago
College freshmen took a psychology exam. If the mean is 80, the SD is 10, and the scores have normal distribution, what percent
gayaneshka [121]

Answer:

  (a)  2%

Step-by-step explanation:

A score of 60 is 2 standard deviations below the mean (80 -2·10 = 60). The empirical rule tells you that 95% of the distribution is within 2 standard deviations of the mean. The remaining 5% is split evenly between those that are more than 2 SD above the mean and those that are more than 2 SD below the mean.

That tells you the percentage who failed is about 2.5%. The best answer choice is 2%.

_____

<em>Additional comment</em>

The empirical rule is a little bit sloppy, but it gets you in the ballpark. The actual percentage is closer to 2.275%.

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2 years ago
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Law Incorporation [45]

Answer:

50x50=1000000

Step-by-step explanation:

4 0
2 years ago
Trig if line segment AB =20 and line segment AC=8, find
Nina [5.8K]

Answer:

23.6 or A

Step-by-step explanation:

We have sin already. 8/20

We use inverse sin of 0.4 (8/20)

The answer of inverse sin is 23.57817848

or 23.6

8 0
3 years ago
If x is 5 what is the value of 4x?
Bond [772]

Answer:

The answer is 20

Step-by-step explanation:

This is because 4(5)= 20

Hope this helps :)

7 0
3 years ago
Read 2 more answers
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