Answer:
The expected number of floors the elevator stops at, not counting the ground floor is =
n*(1-(1-1/n)^m)
Step-by-step explanation:
Here, we want to know the expected number of floors the elevator stops at.
let X1,X2,X3,..Xn are indicator variable for which value =1 if at least one person stops on that floor otherwise value is 0
P(at least one person stops at floor Xj)=1-P(none of m people stops at floor j)
=1-(1-1/n)^m
here total number of floors on elevetor Stops X=X1+X2+X3+...+Xn
hence expected number of floors on elevetor Stops
E(X)=E(X1)+E(X2)+E(X3)...+E(Xn)
=(1-(1-1/n)^m )+(1-(1-1/n)^m )+(1-(1-1/n)^m )+(1-(1-1/n)^m )+..... n times
=n*(1-(1-1/n)^m)
First, you have to do 480/32. (divide) That gives you the cost of $15 per person.
Answer:
.95(1.09m+2.79n)=candys bill
Step-by-step explanation:
5% off is like having 95% of the full price so .95=95%
Answer:
=
3
Step-by-step explanation:
1. subtract
8 from both sides of the equation
2
. Simplify
3
. Add 5
5x
5x to both sides of the equation
4
. Simplify
5
. Divide both sides of the equation by the same term
6
. Simplify
Answer:
Melvin pays 0.24 dollars less using the loyalty card.
Step-by-step explanation:
We are given that,
Original price payed by Melvin = 1.679 dollars per liter
Using the loyalty card, He pays = 1.439 dollars per liter
So, the difference in the amount of money paid by Melvin is,
Difference = Original price - Price using loyalty card
i.e. Difference = 1.679 - 1.439 = 0.24 dollars
Hence, Melvin pays 0.24 dollars less using the loyalty card.
