The ratio given means that for every 2 white marbles, there are 5 blue marbles. That means that if you add 5 and 2, you get 7, which is the total in terms of the ratio. Now you know that there are more than 50 marbles in the bag, so the mutliple of 7 closest, and above, 50 is 56 (7 × 8). Therefore, the minimum number of marbles that can be in the bag is 56, hope this helps!
Answer:
a) Marginal probability of X
b) Marginal probability of Y
c) The probability that the drive-through facility is busy less than one-half of the time is P=0.5.
Step-by-step explanation:
The joint density function of probability is:
a) The marginal density of X is
b) The marginal density of Y is:
c) Probability that the drive-through facility is busy less than one-half of the time. This is P(X<0.5).
Answer:
-3, 9
Step-by-step explanation:
x^2 -6x - 27=
= x^2 - 9x + 3x - 27
= x(x - 9) + 3(x - 9)
= (x + 3)(x - 9)
x = -3, x = 9
Step-by-step explanation:
The correct answer is D