The experimental probability is
(number of times it stopped over Sect. 2) / (total number of times you tried it)
Number of times it stopped in Section-2: 36
Total number of times you tried it: (20 + 36 + 24) = 80
Experimental probability of Section-2 = 36/80 = 9/20 = 45%
Option a. 1/4 is the right answer
Step-by-step explanation:
Given expression is:

Here
we know that
a = x
In order to find the number which should be added
comparing with the formula


So, we will add the square of 1/2 which is 1/4
Hence,
Option a. 1/4 is the right answer
Keywords: Expressions, polynomials
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Answer:
8 hours
Step-by-step explanation:
−0.75x + 18 = -x+20
0.25x = 2
x = 8