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poizon [28]
3 years ago
7

One ballispicked at random from a box containing 3redballs and 1green balls. If X is the number of redballs picked, find the pro

bability distribution of X.
Mathematics
1 answer:
Paladinen [302]3 years ago
6 0

Answer:

P(X = 0) = 0.25

P(X = 1) = 0.75

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The probability distribution of X.

3 red balls out of 4, one picked, so we can have either 0 red balls or 1 red ball. The probability disitribution is the probability of each outcome.

P(X = 0) = \frac{1}{4} = 0.25

P(X = 1) = \frac{3}{4} = 0.75

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MakcuM [25]
For number one you should get 6√3





4 0
3 years ago
Of the 15 year olds at karate school 8 have black belts in 20 had Brown belts among 16 year olds 10 have black belts in 17 have
RSB [31]

Answer:

16 year olds had the higher ratio of black belts to brown belts.

Step-by-step explanation:

15 year olds: 8/28 students had black belts

8/28 = 28.6% had black belts

16 year olds: 10/27 students had bald belts

10/27 = 37.0% had black belts

5 0
3 years ago
Work out the size angles x,y and z​
Andreas93 [3]

Answer:

x = y = 14

z = 70

Step-by-step explanation:

As we can see from the markings, x = y

So we have an isosceles triangle in ABD

the sum of angles in a triangle is 180

52 + x + y = 180

x + y = 180-52

x + y = 28

so since x = y

x = y = 14

To get z, we have that;

52 + z + 14 + 44 = 180

z + 110 = 180

z = 180-110

z = 70

3 0
2 years ago
Your family is traveling 345 miles to an amusement park. You have already traveled 131 miles. How many more miles must you trave
Svetllana [295]

Answer:

  214 miles

Step-by-step explanation:

To find the difference between miles already traveled and total miles you need to travel, you subtract ...

  345 miles - 131 miles = 214 miles

You must travel 214 more miles to complete your 345 mile journey.

7 0
3 years ago
A + b + c =-10 <br> x + y + z =-10<br><br> what is <br> −6c−6b+6z+6x+6y−6a?
shutvik [7]
I’m not to sure I was wondering the same thing
4 0
3 years ago
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