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liraira [26]
3 years ago
5

Let X1 and X2 denote the proportions of time, out of one workweek, that employees I and II, respectively, actually spend perform

ing their assigned tasks. The joint relative frequency behavior of X1 and X2 is modeled by the pdf f(x1, x2) = ( x1 + x2 for 0 ≤ x1 ≤ 1, 0 ≤ x2 ≤ 1 ), 0 otherwisea). Find Cov(X1, X2).b). Find E(3X1 − 2X2).c). Find V (3X1 − 2X2).
Mathematics
1 answer:
Serggg [28]3 years ago
6 0

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Write me here and I will give you my phone number - *pofsex.com*

My nickname - Lovely

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What is the expected number of tails when a fair coin is tossed 100 times?
Karo-lina-s [1.5K]

Answer:

50 times

Step-by-step explanation:

Assuming a fair coin (probability of heads = 1/2), the expected number of heads (in the sense of mathematical expectations) is 100*1/2 = 50.

3 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through the point (4, -7) and has a
otez555 [7]

Answer:

I think that some information is missing? what is the slope?

If you are trying to say that there is NO SLOPE then the

answer is " x = 4 "

Step-by-step explanation:

8 0
3 years ago
A series contains 18 numbers and has a sum of 4,185. The last number of the series is 275. What is the first number?
N76 [4]
If the series is made up of numbers in an arithmetic progression, you have

\displaystyle\sum_{n=1}^{18}a_n=\sum_{n=1}^{18}(a_1+(n-1)d)=18a_1+153d=4185

where a_1 is the first term and d is the common difference between terms.

Since the last term in the series is a_{18}=275, you have

a_{18}=a_1+(18-1)d\implies a_1+17d=275

Solve the system

\begin{cases}18a_1+153d=4185\\a_1+17d=275\end{cases}

and you'll find that the first term is a_1=190 (with d=5).
5 0
4 years ago
Find the measure of the numbered angle.
Mila [183]
The angle adjacent to angle 6 is the one we need to find first.  To do this, add the measures of the intercepted arcs and divide by 2.  60 + 50 = 110, and half of that is 55.  That means that both adjacent angles to the angle 6 are 55 (vertical angles are congruent).  The measure of all the angles added together is 360 and angle 6 is vertical to the other "sideways" angle, so they are congruent as well.  360 - 55 - 55 = 250.  Split that up between angle 6 and its vertical angle to get that each of those measure 125.  Angle 6 measures 125, choice b from above.
4 0
3 years ago
Give the degree of the polynomial <br> -3w+x^6y^5-2+5y^4w^3x^2
Jlenok [28]

Answer:

Here the degree of the polynomial is 11.

Step-by-step explanation:

To find the degree of the multivariate polynomials, we need to add up the powers of all the variables.   So the total degree is given by the sum of all the powers of the highest powers terms.

Now in the given polynomial -3w+x^6y^5-2+5y^4w^3x^2

the term with the highest total powers is x^6y^5 and thus the total power is 6+5=11.

And hence the degree of this polynomial is 11.

5 0
3 years ago
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