Answer: -15v-60
Step-by-step explanation:
What I gather from the question is that
has second moment
and variance
, and you're asked to find the expectation and variance of the random variable
.
From the given second moment and variance, we find the expectation of
:

Expectation is linear, so

Using the same variance identity, we have

and

so that

Alternatively, we can use the identity

Answer:
You can find the diagonal of a rectangle if you have the width and the height. The diagonal equals the square root of the width squared plus the height squared.
92+72−−−−−−√=11.4
Step-by-step explanation:
Answer:False
Step-by-step explanation:
Answer:
Not a function
Step-by-step explanation:
This is not a function because there are different outputs for the same input.