Alex conducted an experiment with a spinner. He recorded the frequency of each spin landing on letters A through D. Based on the
data in the table, what is the experiment probability that the next spin will land on the letter B ?
1 answer:
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Answer:
Step-by-step explanation:
(-2,0) and (8,0) are horizontally aligned, so the ellipse is horizontal.
We are given that there are a total of 78 students. If we set the following variables:
Then, the sum of all of these must be 78, that is:
Since there are 15 in chemistry and physics and 47 in chemistry, we may replace that into the equation and we get:
Simplifying:
Now we solve for P by subtracting 62 on both sides:
Therefore, there are 16 students in physics