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3 years ago

1. is acute. 2. is isosceles. 3. is right. Which two statements contradict each other?

1 answer:

4 0

1. is acute. 2. is isosceles. 3. is right. Which two statements contradict each other?
1. An acute triangle is a triangle with each angles acute it mean less than 90°.3. If The triangle is right, it mean one of angle equal 90 degree.
So ,1 and 3 at's impossible.
1 and 2 it's possible, for example equilateral triangle.
2 and 3 possible

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Elden [556K]

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3 years ago

A sample was done, collecting the data below. Calculate the standard deviation, to one decimal place.

Lilit [14]

Using it's formula, it is found that the standard deviation of the data-set is of 8.9.

<h3>How the standard deviation of a data-set is found?</h3>

The standard deviation of a data-set is given by the square root of the sum of the differences squared between each observation and the mean, divided by the number of values.

The mean of a data-set is given by the sum of all values in the data-set, divided by the number of values.

In this problem, the data-set is: {6, 7, 5, 22, 26}.

The mean is:

$M = \frac{6 + 7 + 5 + 22 + 26}{5} = 13.2$

Hence, the standard deviation is:

$S = \sqrt{\frac{(6-13.2)^2+(7-13.2)^2+(5-13.2)^2+(22-13.2)^2+(26-13.2)^2}{5}} = 8.9$

You can learn more about the standard deviation at brainly.com/question/12180602

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3 years ago

7k − 5k + 8 = −4

Orlov [11]

Answer:

-6

Step-by-step explanation:

7k − 5k + 8 = −4

2k+8=-4

-8 -8

2k=-12

/2 /2

k=-6

Check!

7(-6)-5(-6)+8

-4=-4

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