Plz help!! Needed to graduate in May
2 answers:
You might be interested in
Answer:
7.28 miles
Step-by-step explanation:
Suppose the distance at closest approach is represented by x. Then the distance to the point of closest approach at the first sighting is ...
d1 = x·tan(62°)
At the second sighting, the distance to the point of closest approach is ...
d2 = x·tan(38°)
The difference of these distances is 8 miles, so we have ...
d1 -d2 = 8 = x(tan(62°) -tan(38°))
Dividing by the coefficient of x, we find ...
x = 8/(tan(62°) -tan(38°)) ≈ 7.2764 . . . . miles
The point of closest approach is about 7.28 miles from the landmark.
Whenever the questions asks for the probability and has "or" you have to add the two probabilities. In the same way, "and" implies multiplication. Therefore, the probability that someone swims is:
Probability that someone runs:
Thus, if you add them:
So, the probability that someone swims <em>or</em> runs is 1/2 or 50%.
Probability that someone runs:
Thus, if you add them:
So, the probability that someone swims <em>or</em> runs is 1/2 or 50%.