Luis rode his skateboard home from school at an average speed of 15 miles per hour. It took him 0.5 hours to get home. How far f
2 answers:
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Answer:
Probability that a student chosen randomly from the class plays basketball or baseball is or 0.76
Step-by-step explanation:
Given:
Total number of students in the class = 30
Number of students who plays basket ball = 19
Number of students who plays base ball = 12
Number of students who plays base both the games = 8
To find:
Probability that a student chosen randomly from the class plays basketball or baseball=?
Solution:
---------------(1)
where
P(A) = Probability of choosing a student playing basket ball
P(B) = Probability of choosing a student playing base ball
P(A \cap B) = Probability of choosing a student playing both the games
<u>Finding P(A)</u>
P(A) =
P(A) = --------------------------(2)
<u>Finding P(B)</u>
P(B) =
P(B) = ---------------------------(3)
<u>Finding </u>
P(A) =
P(A) = -----------------------------(4)
Now substituting (2), (3) , (4) in (1), we get
Given:
The growth of a sample of bacteria can be modeled by the function
where, b is the number of bacteria and t is time in hours.
To find:
The number of total bacteria after 3 hours.
Solution:
We have,
where, b is the number of bacteria and t is time in hours.
Substituting t=3, we get the number of total bacteria after 3 hours.
Number of bacteria cannot be decimal value. So, approximate the value to the nearest whole number.
Therefore, the number of total bacteria after 3 hours is about 3003.