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scoray [572]
3 years ago
12

Can someone please help!

Mathematics
1 answer:
Studentka2010 [4]3 years ago
4 0

Plot point F where angle alpha is located.

Triangle ABF has two interior angles x and 80. They add to the exterior angle alpha due to the remote interior angle theorem.

alpha = x+80

<h3>Answer: Choice D</h3>
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What is the area of an equilateral triangle that has a perimeter of 36 centimeters? Round to the nearest square centimeter.
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Answer:

(a is size of side of triangle)

the perimeter of equilateral triangle =3a

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area of equilateral triangle

=√3/4*(a^2 )

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2 years ago
Standard deviation of a normal data distribution is a _______. Group of answer choices
FrozenT [24]

Answer:

Standard deviation of a normal data distribution is a measure of data dispersion.

Step-by-step explanation:

Standard deviation is used to measure dispersion which is present around the mean data.

The value of standard deviation will never be negative.

The greater the spread, the greater the standard deviation.

Steps-

1. At first, the mean value should be discovered.

2.Then find out the square of it's distance to mean value.

3.Then total the values

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5.the square root have to be taken.

Formula-

SD=\sqrt{\frac{(\sum{x-x)^2}  }{n-1}

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It is used to measure dispersion when mean is used as measure of central tendency.

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