Answer:
2
Step-by-step explanation:
Evaluate p + 4 - 1 - (r + 4) where p = 4 and r = 1:
p + 4 - 1 - (r + 4) = 4 + 4 - 1 - (4 + 1)
4 + 1 = 5:
4 + 4 - 1 - 5
4 + 4 - 1 - 5 = (4 + 4) - (1 + 5):
(4 + 4) - (1 + 5)
4 + 4 = 8:
8 - (1 + 5)
1 + 5 = 6:
8 - 6
8 - 6 = 2:
Answer: 2
The experimental probability that in a group of 4 students, at least one of them has brown eyes is 95%.
<h3>
What is Experimental Probability?</h3>
Experimental probability is a probability that is determined on the basis of a series of experiments. A random experiment is done and is repeated many times to determine their likelihood and each repetition is known as a trial. The experiment is conducted to find the chance of an event to occur or not to occur.
Here , Favorable Outcome = 19
Total outcomes = 20
Probability = Favorable Outcome/ Total Outcome
= 19 / 20
= 95%
Thus, the experimental probability that in a group of 4 students, at least one of them has brown eyes is 95%.
Learn more about Experimental Probability from:
brainly.com/question/15729871
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Answer:
1/18
Step-by-step explanation:
Spinner: 1 out of 8
Even number: 4 out of 9
1/8x4/9=4/72 = 2/36 = 1/18
I hope this helps you
-8d-(-3w)
-8d+3w
