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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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Use the formula C = 2πr and π= 3.14 to find the circumference of a circle with a radius of 5 meters.
professor190 [17]
Solution D 

Just put into a calculator 

Hope I helped :)

7 0
3 years ago
3, 265 pounds is how many ounces? ​
Bad White [126]

Answer:

52,240 oz

Step-by-step explanation:

1 lb = 16oz

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4 0
3 years ago
Read 2 more answers
David, Egil and Frances share money in the ratio 2:7:9. Frances gets ?80 more than David. Explain how you know Egil gets ?80.
Natalija [7]

Step-by-step explanation:

We have been given that David, Egil and Frances share money in the ratio 2:7:9.

Let 2x, 7x and 9x be the amounts of money that David, Agil and Frances get respectively.  

We are told that Frances gets $80 more than David. So we can write this information in an equation as:

9x=2x+80

Now let us solve for x.

9x-2x=80

7x=80

x=\frac{80}{7}

Now let us substitute x=\frac{80}{7} in 7x (amount of money that Egil gets).

\text{ Amount of money that Egil will get}=7\cdot \frac{80}{7}

Upon cancelling out 7 from numerator and denominator we will get,

\text{ Amount of money that Egil will get}=80  

Therefore, Egil will get $80.    

6 0
3 years ago
Lori is running in a marathon, which is 28.4 miles she ran 0.1 of it already. How far has Lori run?
hoa [83]
So she ran the 0.1 of the 28.4
That is she ran 1% of 28.4 miles
0.1 * 28.4 is 2.84

Hope this helps :)
7 0
3 years ago
Find the value of x in the Diagram Below.
zhannawk [14.2K]
Answer: x = 12

Step-By-Step: 180 - 100 = 80

Step-By-Step: 80 - 12 = 68

Step-By-Step: 68 is angle ( X + 12)

68 + 12 = 80 + 100 equals 180

6 0
3 years ago
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