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Xelga [282]
3 years ago
15

A bag contains 4 blue marbles, 2 black marbles, and 3 red marbles. If a marble is randomly drawn from the bag, what is probabili

ty that it is NOT black?
Mathematics
1 answer:
maw [93]3 years ago
6 0
There are 4 blue marbles
There are 2 black marbles
There are 3 red marbles
There are a total of 9 marbles
You minus the black marbles from the total
9-2=7
If there are 7 non black marbles then the ratio is 7:9
7:9 is the probability that you won't get a black marble

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The question in the image.
GREYUIT [131]

Answer:

500 boxes

Step-by-step explanation:

<em>hey there,</em>

<em />

< Since "p" stands for profits, change "p" to 0 (since the question says 0 profits).

Here is how your equation would look like:

0 = -n^2 + 300n + 100000

Pretend like "n" is "x" since that is the variable we are trying to find here.

Solve for "n". Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

"n" actually ends up equaling 500, -200.

Obviously, negative can't be the answer because you can't have a negative amount of boxes. So 500 boxes would be your answer. 200 CAN'T be your answer <em>either </em>because it is a negative!! >

<u>Hope this helped! Feel free to ask anything else.</u>

6 0
4 years ago
In a lottery game, a player picks six numbers from 1 to 22. If the player matches all six numbers, they win 20,000 dollars. Othe
Angelina_Jolie [31]

Answer:

Total possible number of outcomes = C(24,6) [24 choose 6]

=24!/(6!18!)

= 134596

Out of which there is only one winning combination.

Therefore we conclude:

P(win 20000)=1/134596

P(lose 1)=134595/134596

and hence the expected value is:

20000*(1/134596)+(-1)*(134595/134596)

=-114595/134596

=-0.8514 (rounded to four places after decimal)

Step-by-step explanation:

Hope this helped!

8 0
3 years ago
Find the exact solution of the system of equations of x^2+y^2-4x-6y+4=0 and x^2-4x-3y+4=0
gavmur [86]
We can readily know the x^2-4x+4=3y then use it to replace the same function in the first equation which refers to the 3y+y^2-6y=0 
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                                                             y(y-3)=0
                                                               y1=0 -----------y2=3
7 0
4 years ago
HELP PLEASEE<br> What is the range of the graph below?
Grace [21]

Answer:

d

Step-by-step explanation:

range is how far the graph goes from bottom to top.

7 0
3 years ago
Read 2 more answers
What is 0.685 in expanded notation
Darina [25.2K]
0 + (6/10) + (8/100) + (5/1000)
8 0
4 years ago
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