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Inga [223]
3 years ago
13

A device contains two circuits. The second circuit is a backup for the first, so the second is used only when the first has fail

ed. The device fails when and only when the second circuit fails. Let X and Y be the times at which the first and second circuits fail, respectively. X and Y have joint probability density function
f(x,y) = { 6e^-x e^-2y for 0 < x < y < .

What is the expected time at which the device fails?
Mathematics
1 answer:
Alecsey [184]3 years ago
4 0

Answer:

Do you have a photo of this problem

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One-half of a number added to itself equals twice the difference of the number and four.
dybincka [34]

Answer:One-half of a number added to itself equals twice the difference of the number and four.

Step-by-step explanation:

6 0
3 years ago
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I need help I would really thank wheeler answers this for me
gavmur [86]
It helps immensely if you know your times tables.

a) 36 = 6*6 = 2*3*2*3 = 2^2*3^2


b) 45 = 5*9 = 5*3*3 = 3^2*5


c) 2 is not a common factor; 3^2 is a common factor; 5 is not a common factor. The greatest common factor is 3^2 = 9.


d) The least common multiple can be found a couple of ways.

.. 1) the product of the distinct factors to their highest powers
.. .. .. 2^2 * 3^2 * 5 = 180

.. 2) the product of the numbers divided by their greatest common factor.
.. .. .. 36 * 45 / 9 = 180
3 0
3 years ago
A rectangular shape of dimension 95m by 75m is drawn to a scale of 1cm to 10cm. find the area of the drawing
Dimas [21]

Answer:

p: (-4)2 > 0

r: Two angles, whose measure have a sum of 90, are supplements.​

Step-by-step explanation:

4 0
3 years ago
Write the equation of the line that has a slope of 3 and passes through (5, 11)
Marina CMI [18]

Answer:

3x-4

Step-by-step explanation:

y=ax+b general type of the line

a is the slope

y=3x+b

put 5 instead of the x and put 11 instead of the y

11=15+b

b=(-4)

Equation is 3x-4

4 0
3 years ago
How old am I if 250 reduced by 5 times my age is 50?
Korolek [52]
250 - 5(x) = 50

250 (-250) - 5x = 50 (-250)

-5x = -200

-5x/-5 = -200/-5

x = 40

hope this helps

you are 40 years old!
4 0
4 years ago
Read 2 more answers
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