PLS HELP GIVING (BRAINLY)
2 answers:
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Answer:
<u><em>Question 1:</em></u>
<em>The sum of interior angles of a polygon can be found by the following formula:</em>
(n-2) × 180
<em><u>Where n is the no. of sides</u></em>
A pentagon has 5 sides
So,
= (5-2) × 180
= (3) × 180
= 540 degrees
<u><em>Question 2:</em></u>
Since The sum of interior angles of a regular octagon is 1080 and the total interior angle are 8
So, Measure of interior angle =
Measure of interior angle = 135 degrees
<u><em>Question 3:</em></u>
<em><u>Since, one interior angle in a hexagon measures 120 degrees.</u></em>
So,
<em>The interior angle should be subtracted by 180 to get the exterior angle.</em>
Exterior angle = 180-120
Exterior Angle = 60 degrees
Answer: The option B. 1.9 is correct
Explanation:
We are given the below information:
x Probability P(x)
0 0.2
1 0.1
2 0.4
3 0.2
4 0.1
The expected value of x is given below:
Therefore, the expected value of x is 1.9