Answer:
P = 4 / ( 4 + 3 +1 )
= 4 / 8
= 4 / 8 = 1 / 2
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The first one is B hope this helps
The value of the probability P(S or T) is 39%
<h3>How to determine the probability?</h3>
The probability values are given as:
P(S) = 12% P(T) =27%
For mutually exclusive events,
P(S or T) = P(S) + P(T)
This gives
P(S or T) = 12% + 27%
Evaluate the sum
P(S or T) = 39%
Hence, the value of the probability P(S or T) is 39%
Read more about probability at:
brainly.com/question/11234923
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2x^2+7x-5+(-8x^2-3x+5)=-6x^2+4x.
