Answer: 3.64, 10.00
Step by step:
Answer:
8. 51
9. 89
10. 20
11. 35
Step-by-step explanation:
sum of the internal angles in a triangle must always total 180 degrees
trick: be careful, sometimes they give you the internal angle, sometimes the external angle
There are ten combihations of the 5 boards taken 2 at a time. The values of x for each combination are as follows:
(1 ,2), x = 2; (1, 3), x = 1; (1,4), x = 1; (1, 5), x = 1; (2, 3), x = 1; (2, 4), x = 1; (2, 5), x = 1; (3,4), x = 0; (3, 5), x = 0; (4, 5), x = 0.
The mass function of x can be expressed as follows:
P(x = 0) = 0.3.
P(x = 1) = 0.6.
P(x = 2) = 0.1
Assuming you mean the central angle, semicircles have central angles of 
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