Answer:
E(x) = 15 minutes
Step-by-step explanation:
The random variable X (waiting time) has a uniform distribution between the interval [0,30], because it is just as likely that you arrive in any time and then your waiting time is minimum 0 minutes and maximum 30 minutes
The expected value of a random variable uniform is:
E(x) = 
Where a and b are the interval's extremes
Thus
E(x) = 
E(x) = 15 minutes
Answer:
24
Step-by-step explanation:
It is the addition of all the sides
Answer:
X is less than and equal to 4
Answer:
The larger number is 15.
Step-by-step explanation:
Let the numbers be x and y.
Given x + y = 22
3x+ 5 = 2y - 4 → 3x - 2y = -9
Now solving the above two equations we get,
3x + 3y = 66
3x - 2y = -9
Subtracting, 5y = 75 → y = 15; x = 7
The larger number is 15. (D)
<span>1 inch = 1 foot is the answer. The</span> appropriate scale to use on an 8 1/2 by 11 sheet of paper for a sketch of the room and carpet is <span>1 inch = 1 foot. The other choices are incorrect because it is not possible for 1/2 inch= 1 foot and it is grammatically wrong when we say 1 inches= 1 foot.</span><span />
