68% is around 70%
70% of 1 is 0.7
0.7'*3=2.1
Hope this helps :)
The decagon can be divided in 10 equal parts, so if a full rotation is of 360º, a one tenth rotations will be of 360º/10= 36º
So if you rotate the decagon by a multiple of 36º the rotation will be onto itself, i.e. the figure will look as if it wasn't moved.
From the choices given, the angle that will rotate the angle counterclockwise onto himself will be multiple of 36º, the only one is 72º
This figure has 5 lines of symmetry that cross each vertex and 5 lines of symmetry that cross form the midpoint of one side to the midpoint of the oposite side. This is a total of 10 lines of symetry.
So you can reflect the decagon 10 different ways.
The correct choice is C: 36º, 72º, 10, 5
Given:
To find:
The variance. of combined set.
Solution:
Formula for variance is
...(i)
Using (i), we get
Similarly,
Now, after combining both sets, we get
Therefore, the variance of combined set is 15.4.
The effective elements to include in the introductions are statement of the topic, a relevant anecdote and a surprising fact about the topic. Therefore the option 1st, 2nd and 6th options are correct.
<h3>What is Introduction? </h3>
Introduction is the starting line or the opening hook or portion that attracts the readers attention which carries the relevant background of the information.
It is the statement which represents the main point of the following argument or the paragraphs.
There are many elements that included in the introductory part some of them are as follows:-
- a statement of the topic
- a relevant anecdote or tale
- a surprising fact about the topic
Therefore the option 1st, 2nd and 6th options are correct.
Learn more about Introduction here:
brainly.com/question/3964580
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