Answer:
Step-by-step explanation:
Given
Solving (a):
Find k
To solve for k, we use the definition of joint probability function:
Where
Substitute values for the interval of x and y respectively
So, we have:
Isolate k
Integrate y, leave x:
Substitute 0 and x/2 for y
Integrate x
Substitute 0 and 2 for x
Solving (b):
We have:
Where
To find , we use:
So, we have:
Integrate x leave y
Substitute 0 and y/3 for x
Integrate
Substitute 0 and 2 for y
Answer:
B
Step-by-step explanation:
Use formula given above
I think it's the last one Which is 160° :)
Answer:
Step-by-step explanation:
P = J - 15
P + J = 55
(J - 15) + J = 55
2J = 40
J = 20 years
–6x3 + 4x2 – 4x = -(–6x3 + 4x2 – 4x)
=6x3 - 4x2 + 4x
answer is B)6x^3 – 4x^2 + 4x