Answer: B
I hope this helped you
Answer:A
Step-by-step explanation: because it’s an even number
Answer:

And then the maximum occurs when
, and that is only satisfied if and only if:

Step-by-step explanation:
For this case we have a random sample
where
where
is fixed. And we want to show that the maximum likehood estimator for
.
The first step is obtain the probability distribution function for the random variable X. For this case each
have the following density function:

The likehood function is given by:

Assuming independence between the random sample, and replacing the density function we have this:

Taking the natural log on btoh sides we got:

Now if we take the derivate respect
we will see this:

And then the maximum occurs when
, and that is only satisfied if and only if:

Hello.
Angle Theta is equal to: x² + y² = r² OR

40² + y² = 41²
1600 + y² = 1681
-1600 -1600
y² = 81
y = 9
x = 40, y = 9, r = 41
<span>cos θ= </span>

=

sin θ =

cot θ =

sec θ =

Hopefully it makes sense! :)
Answer:
1800 miles
Step-by-step explanation:
Distance = rate X time. D=R x T
d=x(4.5)
d=4.5x. (First trip)
D=(x+25)(4)
D= 4x + 100. (Return trip)
Total distance
4.5x = 4x +100
X = 200
4.5(200) = 4(200) + 100
1800