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kirza4 [7]
3 years ago
6

A bag had 3 pink marbles and 4 purple marbles find the probability of selecting 3 pink marbles without replacement

Mathematics
1 answer:
Klio2033 [76]3 years ago
7 0
There are 7 marbles in the bag.
The probability of drawing a  pink one is (3/7) .

Then you have 1 pink one, and there are 6 marbles in the bag.
The probability of drawing a pink one is (2/6) .

Then you have 2 pink ones, and there are 5 marbles in the bag.
The probability of drawing a pink one is (1/5) .

The probability of all 3 draws being successful is

           (3/7) (2/6) (1/5)  =  6/210  =  1/35  =  about  2.86%  (rounded)

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A dodgeball tournament has teams of up to 12 each. If 580 people signed up, what is the fewest number of teams the tournament ca
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The least amount of teams that can be created is either 48 or 49 teams.
8 0
3 years ago
choose five ordered pairs whose first and second coordinates are equal. plot these points and connect them. what kind of figure
Effectus [21]

Answer:

The figure is a straight line.

The figure lies in the first and the third quadrants.

Step-by-step explanation:

Take five ordered pairs as (1,1),(2,2),(-1,-1),(-2,-2),(3,3)

Here, the first and second coordinates are equal.

Now, plot these points and connect them.

From the graph, it can be observed that the figure is a straight line.

Also, the figure lies in the first and the third quadrants.

Download pptx
5 0
3 years ago
In a study, 8 people ate a total of 1,312 pounds of potatoes in 2 years.
cricket20 [7]

Answer:

83.125 pounds of potatoes

Step-by-step explanation:

1. Divide 1,312 by 2

    1,312/2 = 665

This means that in 1 year 8 people ate 665 pounds of potatoes.

2. Divide 665 by 8

    665/8 = 83.125

This means that in 1 year 1 person ate 83.125 pounds of potatoes.

5 0
3 years ago
NEED HELP PLZ
Angelina_Jolie [31]

Answer:

0.14

Step-by-step explanation:

From the question given above, the following data were obtained:

Grade A = 5

Grade B = 10

Grade C = 15

Grade D = 3

Grade F = 2

Sample space (S) = 35

Probability of getting grade A, P(A) =?

The probability that a student obtained a grade of A can be obtained as follow:

Probability of getting grade A, P(A) =

Event of A (nA) / Sample space, (nS)

P(A) = nA/nS

P(A) = 5/35

P(A) = 0.14

Thus, probability that a student obtained a grade of A is 0.14

6 0
3 years ago
Need help with us question
lina2011 [118]

Answer:

17. 20  

18. 50

19. 50

20. 70

21. 110

22. 160

Step-by-step explanation:

I did this assignment already :)

7 0
3 years ago
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