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Pavlova-9
17 days ago
10

60 randomly selected students were asked how many siblings were in their family. Let X = the number of pairs of siblings in the

student's family.
The results are as follows:

Siblings Frequency
1 13
2 22
3 15
4 6
5 3
6 0
7 1

Round your answers to two decimal places.
1. The mean is ___.
2. The median is ___.
3. The sample standard deviation is ___.
4. The first quartile is ___.
5. The third quartile is ___.
Mathematics
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Find the value of x in the isosceles triangle shown below.
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Solution:

x=8

Detailed explanation:

This isosceles triangle consists of two right triangles with sides equal to 8,\sqrt{80}, and y

Considering we possess two sides of a right triangle, determining the third side can be achieved using the Pythagorean Theorem

(\sqrt{80} )^2=8^2+y^2\\\\80=64+y^2\\\\y^2=16\\\\y=4

Because it is an isosceles triangle, these two right triangles are the same, thus x=2y

Hence, x=2(4)=8

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