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Zina [86]
3 years ago
13

Consider the probability distribution of a random variable x. is the expected value of the distribution necessarily one of the p

ossible values of x?
Mathematics
1 answer:
Misha Larkins [42]3 years ago
3 0
The expected value of a distribution is considered as a mean, or average, for a probability distribution. It represents the center of the possible values of a variable. That doesn't necessarily mean it would be one of the possible values of x. 
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The length of a rectangle is three times its breadth if the breadth is decreased by 2 m and breadth increased by 4 m the area of
White raven [17]

Answer:

Let the breadth is x, then the length is 3x.

<u>The area is:</u>

  • A = lw = 3x*x = 3x²

<u>The breadth is decreased by 2 m: </u>

  • w = x - 2

<u>The length is increased by 4m: </u>

  • l = 3x + 4

<u>The area is now:</u>

  • (x - 2)(3x + 4) = 3x² - 1/3(3x²)
  • 3x² +  4x - 6x - 8 = 2x²
  • x² - 2x - 8 = 0
  • x² - 2x + 1 = 9
  • (x - 1)² = 3²
  • x - 1 = 3
  • x = 4

The breadth was 4 m and the length  12 m

8 0
2 years ago
11x&lt;-66 what is the answer
melomori [17]
11 x < - 66

x < - 66 / 11

x < - 6

hope this helps!
8 0
3 years ago
Pls help
Bezzdna [24]

Answer:

Your answer is A.

5 0
2 years ago
GUYS PLEASE HELP
Volgvan

Answer:

10 minutes

Step-by-step explanation:

Since you can do 6 flyers each minute, the rate would go at 6x, with x being minutes. You initially did 80, so the equation for you would be y=6x+80.

Your friend's equation would be y=4x+100, because he initially had 100 done and is now getting 4 done per minute.

If you put the 2 equations in your calculator, the intersection will happen at x=10, showing that you and your friend will have an equal number of flyers at 10 minutes.

3 0
3 years ago
Angle x is an acute angle in a triangle. If cos x=4/5, then the sin x=
Pepsi [2]
The answer is 3/5 because u need to find the missing side in order to find sin

8 0
3 years ago
Read 2 more answers
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