Between the 2 second mark and 6 second mark, 4 seconds passed and 8 ounces leaked out.
8 ÷ 4 = 2, the ounces per second leaking.
Multiply it by 2 to get 4, the amount leaked after 2 seconds.
Add 4 to 28 to get 32 ounces, the initial amount.
Hope this helps!
Answer:
A(x1,y1) and B(x2,y2)
Step-by-step explanation:
you take two points your start and your stop and put them into the equations and solve
Answer:
Part A: -8 < -4
Part B: The inequality means the temperature is in City Q is less than City P.
Part C: -8 is plotted farther to the left of 0 than -4 is
Step-by-step explanation:
To write an inequality, use the values given to you with inequality signs.
-8 is less than -4 so the temperatures can be compared as -8 < -4.
The inequality means the temperature is in City Q is less than City P.
You can see it on the number line because -4 is plotted farther right then -8.
The value of the expression (2)^6 is 64.
Answer:
A. E(x) = 1/n×n(n+1)/2
B. E(x²) = 1/n
Step-by-step explanation:
The n candidates for a job have been ranked 1,2,3....n. Let x be the rank of a randomly selected candidate. Therefore, the PMF of X is given as
P(x) = {1/n, x = 1,2...n}
Therefore,
Expectation of X
E(x) = summation {xP(×)}
= summation {X×1/n}
= 1/n summation{x}
= 1/n×n(n+1)/2
= n+1/2
Thus, E(x) = 1/n×n(n+1)/2
Value of E(x²)
E(x²) = summation {x²P(×)}
= summation{x²×1/n}
= 1/n