Directions: Read each problem, then solve for the missing part(s).
1 answer:
I have attached an image showing the triangle with angle and distance depicted in the question.
Answer:
151 miles
Step-by-step explanation:
We have to first find the unknown angle in the triangle.
Sum of angles in a triangle is 180°.
Thus, if we call angle at Norfolk A, we have;
A = 180 - (83 + 31)
A = 66°
Using sine rule, we can find the distance which we will term as a.
Thus;
a/sin 83 = 139/sin 66
a = (139 × sin 83)/sin 66
a = 137.963915/0.913545
a ≈ 151 miles
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Answer: 0.0575
Step-by-step explanation:
Binomial probability distribution :-
, where P(X) is the probability of getting success in x trials, n is the total number of trials and p is the probability of success in each trial ( in decimal ).
Given : The probability that adults use smartphones in meetings or classes = 0.57
Sample size : n= 8
Now, the probability that exactly 2 of them use their smartphones in meetings or classes :-
Hence, the required probability = 0.0575