Answer:
0.65 or 65%
Step-by-step explanation:
Students in class (n) = 40
Physics majors (P) = 14
Female students (F) = 18
Female Physics majors (P and F) = 6
The probability that a randomly selected student is female or a physics major is given by the probability that the student is female, added to the probability that the student is a physics major, subtracted by the probability of the student being a female physics major:
The probability that a randomly selected student is female or a physics major is 0.65 or 65%.
Answer:
C) x2 + x = 306
Step-by-step explanation:
x2 + x = 306
x2 + x - 306 = 0
x2 + 18x - 17x + 18 * (-17) = 0
x ( x + 18) - 17 (x +18) =0
(x + 18) (x - 17 ) = 0
x = -18 or 17
Answer:
10 hours and 20 minutes.
Step-by-step explanation:
We can find out how many hours of sleep Tucker gets every night by counting in one-hour intervals.
One hour from 8:25 is 9:25.
9:25, 10:25, 11:25, 12:25, 1:25, 2:25, 3:25, 4:25, 5:25, 6:25.
This is 10 hours.
Now we count in ten-minute intervals to get to 6:45
6:35, 6:45.
This is 20 minutes.
Therefore, Tucker gets 10 hours and 20 minutes of sleep each night.