a bag contains 3 red balls and 1 blue ball. what is the expected number of red balls in the first bag

Answers

Answer 1

Answer:

[tex]Expected\ Value = 3[/tex]

Step-by-step explanation:

Given

[tex]Red\ Balls = 3[/tex]

[tex]Blue\ Balls = 1[/tex]

Required

Determine the expected number of red balls

First, we calculate the probability of a red ball

[tex]P(Red\ Ball) = \frac{Red\ Ball}{Total}[/tex]

[tex]P(Red\ Ball) = \frac{3}{3 + 1}[/tex]

[tex]P(Red\ Ball) = \frac{3}{4}[/tex]

[tex]P(Red\ Ball) = 0.75[/tex]

The expected value is then calculated as:

[tex]Expected\ Value = P(Red\ Ball) * Total[/tex]

[tex]Expected\ Value = 0.75 * 4[/tex]

[tex]Expected\ Value = 3[/tex]


Related Questions

Johnny filled a 5 gallon bucket with water. How many quarts of water does Johnny have?

Answers

Answer:

20 quarts

Step-by-step explanation:

Five gallons is equal to 20 quarts.

I hope it helps.

Answer:

20 quarts

Step-by-step explanation:

in 1 gallon there is 4 quarts so if theres 5 gallons there would be 4 quarts for each, so multiply 5 by 4, becuase you need 4 quarts in every gallon, the product (answer to a multiplication problem) to that is 20. :)

Find the distance from San Antonio to El Paso.


633 mi


344 mi


558 mi


261 mi

Answers

Answer:

558

Step-by-step explanation: I just took the quiz!

Distance from San Antonio to El Paso in Miles is 558 miles

Find:

Distance from San Antonio to El Paso in Miles

Computation:

We know that

Distance from San Antonio to El Paso is 888 km

So,

1 km = 0.621371 miles

Distance from San Antonio to El Paso = 888 × 0.621371

Distance from San Antonio to El Paso in Miles = 558 miles

Learn more:

https://brainly.com/question/19679508?referrer=searchResults

Simplify 8x + 9d + 3x -5d
Please Do Show Your Work Explanation

Answers

Answer:

The answer is =4d+11x

Step-by-step explanation:

8x + 9d + 3x -5d

=9d-5d+8x+3x

=4d+11x

Answer:

putting in arranged and sum the like terms

8x+3x+9d-5d

11x+4d

1. The temperature is -2℃. If the temperature rises by 15℃, what is the new temperature?


2. At midnight the temperature is -6℃. At midday the temperature is 9℃. By how much did the temperature rise

Please need right now

Answers

Answer:

1. The new temperature would be 13°C (-2+15)

2. The temperature rose 15°C (9-(-6))

PLZZZ HELP GIVING BRAINLIST Match each expression to its value.

1. 7 - 5
-2
2. -7 + 5
2
3. -7 - 5
12
4. 7 - (-5)
-12

Answers

Answer:

1. 0

2. 5  

3. 0.416666667

4.0

1. 2
2. -2
3. -12
4. 12

Which number is bigger: 1.58 or 1.025

Answers

Answer:

1.58 is bigger than 1.025

Step-by-step explanation:

Answer:

1.58 is greater

Step-by-step explanation:

because just compare the digits...in once place both are having same no. but in tenths place they are different since 5 is greater than 0

what is 9 percent of 30948

Answers

Answer:

2785,32

Step-By-Step:

30948*0.09

Answer:

2785.32

Step-by-step explanation:

solution,

9 % of 30948

= 9/100×30948

= 278532/100

= 2785.32

9%of 30948 is 2785.32

whats 2+2 lollololololololololololololololololololo

Answers

Answer:

4ssssssssssssssssssssssssssss

Whoever answers gets brainlist!

Answers

Answer:

21 over 6 (21/6)

26 over 6 (26/6) =47 over 6 (47/6)

your final answer is 7 5/6

Step-by-step explanation:

Step-by-step explanation:

[tex]3 \frac{3}{6} + 4 \frac{2}{6} [/tex]

Which simplifies to:

[tex] \frac{21}{6} + \frac{30}{6} [/tex]

When added is:

[tex] \frac{51}{6} [/tex]

When transformed back into a Mixed Fraction:

[tex]8 \frac{3}{6} [/tex]

Determine wether the relation is a function (4,0),(2,0),(1,2),(2,4),(4,4),(5,2)

Answers

Answer:

This is not a function

Step-by-step explanation:

Hope this helps

It takes Andre 4 minutes to swim 5 laps. a.How many laps per minute is that?

Answers

Answer:

1.25 laps per minute

Step-by-step explanation:

1.25 laps per minute

Pls help 2 and 3!!!!!!!!!

Answers

Answer:

2)

d. -1 1/2

3)

c. 21 1/2

Step-by-step explanation:

please no fake answers ,I need help:)

Answers

Answer:

A. 2.10b + 12.99 = 21.39; 4 bottles

Step-by-step explanation:

The b represents bottles of water, at the end of the equation. If each bottle is $2.10, and there were 4 bottles brought, $2.10 * 4 = $8.40, and $8.40 + $12.99 is $21.39.

A: because 21.39 minus 12.99 equals 8.4 which is 8 dollars and 40 cents. And 8.4 divided by 2.10 is 4. HOPE THIS HELPS!

Write an expression to represent a number plus 4.

Answers

Answer:

n + 4

Step-by-step explanation:

n represent the number we are adding to 4 obviously

And 4 is 4 obviously

Hope this helps!

t-4 . that's so easy !

4/ PLEASE HELP ME ON THIS. ASAP

Answers

Answer: a,b,d,e are all right beacuse they all relate to the question

Step-by-step explanation:

c how ever is no shown on the graph and is therefor wrong

14) The value of y varies directly with x, and y = 3.6 when x = 6. Find y when x= 48.
Please and thank you. I needed now. Please help

Answers

Answer: y = 28.8

Step-by-step explanation:

By using ratios

if the values vary with each other, then they will increase the same amount. 6x8 is 48. So 3.6 x 8 is your answer, 28.8

Acellus help slope intercept

Answers

Greetings.

The answer is y = 2x + 7.

Explanation:

If you are an expert in graph then you are able to find the slope without calculating. (Rise over Run by looking at the graph.)

We can also find the slope by calculating m-value.

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]   ---> Rise Over Run

But how are we gonna calculate if we don't have any two given ordered pairs?

The answer is, we can just pick two ordered pairs that are part of the graph, or rather say that the graph passes through.

The graph passes through (-3,1) and (-2,3).

Then we can calculate the slope by using rise/run.

[tex]m=\frac{3-1}{-2-(-3)}\\m=\frac{2}{-2+3}\\m=\frac{2}{1}\\m=2[/tex]

Thus, the slope is m = 2.

However, we are not done yet. We just only found out the slope. We need to find the y-intercept too.

From Linear Function - [tex]y=mx+b[/tex]

Where m = slope and b = y-intercept.

Since b = y-intercept, we don't need to calculate/substitute x = 0. We simply find which number the graph has y-intercept at.

Which is (0,7), the y-intercept.

Then we substitute b = 7 as y-intercept.

Thus the answer is [tex]y=2x+7[/tex]

Giving everything. Plzzz help.

Answers

Pretty sure it’s A sorry if that’s wrong

Answer:

a is the answer..........

Find the value of the power 6 to the -4th

Answers

Answer:

6 to the -4th is 7.716 x 10^-4

Step-by-step explanation:

Your friend says that there are 36 feet in 12 yards. Is your friend correct? Explain your reasoning?

Answers

Answer:

Your friend is correct.

Step-by-step explanation:

3 feet - 1 yard

36 / 12 = 3

what do i do cause this is wrong and it is also wrong switched around!!!! pls help meh i will give brainleist

Answers

Answer: It seems like you're correct, maybe try switching the numbers around if you haven't done so.

When it's say "find the product _ and _, you'll basically be writing a multiplication expression as your answer.

A local restaurant only sells burgers and cokes. 3 burgers and 5 comes cost $17, while 6 burgers and 9 cokes cost $33. What’s the price of a burger?

Answers

Answer:

The price of a burger is $4 and that of cone is $1.

Step-by-step explanation:

Let the cost of burger is x and that of cone is y.

ATQ,

3x+5y = 17 ....(1)

And

6x + 9y = 33 ...(2)

Multiply equation (1) by 2.

6x + 10 y = 34 ...(3)

Subtract equation (2) from (3)

6x + 10 y-(6x + 9y) = 34 - 33

6x + 10 y-6x- 9y = 1

y = 1

Put the value of y in equation (1)

3x+5 = 17

3x = 12

x = 4

So, the price of a burger is $4 and that of the cone is $1.

11. A tank is being filled up with water. At t=0, we know that the tank holds 150 gallons of
water, and after one hour ( t=1) , it holds 180 gallons of water.
a) Assuming that the volume of water in the tank, V, is a linear function of time, t, in hours,
find a formula for V ( linear function)

b) BY what percent did the volume of water increase from t=0 to t= 1?

Answers

Answer:

V = 30t + 15020%

Step-by-step explanation:

Given

Initial volume = 150 galVolume after 1 hour = 180 gal

a) The volume formula will be:

V = 30t + 150

As 150 is y-intersect (volume at zero time) and the rate of change (the slope) is 30 gal per hour

b) Increase of volume by percent:

30 gal increase on top of 150 gal

30/150*100% = 20%

Answer:

20%

Step-by-step explanation:

The volume formula is V = 30t + 150 → where 150 is y-intersect and the slope is 30 gals per hour

So you can do:

30 gals of increase on top of the 150 gals to get:

30/150×100%  which equals 20%

:)

Please give me the correct answer ​

Answers

Answer:

i dont think so.

Step-by-step explanation:

find slope please help

Answers

Answer:

slope = -5/2

Step-by-step explanation:

rise/run

down 5

right 2

George invited 65 students in his school to volunteer at a charity race. 39 of the students signed up to volunteer. What percent of the invited students signed up?

Answers

Answer:

60%

Step-by-step explanation:

39/65 gives you the answer.

what is an example of a dealer incentives​

Answers

Answer:

a dealership may offer a cheaper price to a customer for a vehicle so it can meet a sales target and earn an incentive.

Step-by-step explanation:

 

i need help with this question please

Answers

Answer: it C

Step-by-step explanation: if it not incorrect sorry for the wrong answer

hellllppp please help me

Answers

Answer:

[tex]F' = (-3,-3)[/tex]

[tex]G' = (-3,3)[/tex]

[tex]H' = (6,-3)[/tex]

Step-by-step explanation:

Given

The attached graph

[tex]Scale\ Factor = 1\frac{1}{2}[/tex]

Required

Determine the coordinates of F'G'H'

First, we need to get the coordinate of F, G and H from the graph

[tex]F = (-2,-2)[/tex]

[tex]G = (-2,2)[/tex]

[tex]H = (4,-2)[/tex]

The dilated coordinate is then calculated as:

[tex](FGH)' = (FGH) * Scale\ Factor[/tex]

This gives:

[tex]F' = (-2,-2) * 1\frac{1}{2}[/tex]

[tex]F' = (-2* 1\frac{1}{2},-2* 1\frac{1}{2})[/tex]

[tex]F' = (-3,-3)[/tex]

[tex]G' = (-2,2) * 1\frac{1}{2}[/tex]

[tex]G' = (-2 * 1\frac{1}{2},2 * 1\frac{1}{2})[/tex]

[tex]G' = (-3,3)[/tex]

[tex]H' = (4,-2) * 1\frac{1}{2}[/tex]

[tex]H' = (4 * 1\frac{1}{2},-2 * 1\frac{1}{2})[/tex]

[tex]H' = (6,-3)[/tex]

PLEASE HELP ME!
100 POINTS!
A cylinder has a volume of 20x®y4 units cubed. If the base of the cylinder has an area of
5x"y2 units squared, which of the following expressions represent the height of the cylinder?
(Hint: V = Bh)
O 100x®y
O 15wy?
o 4x®y?
O 4xy?

Answers

Answer:

100xy

Step-by-step explanation:

The height of the cylinder is 4x³y² unit.

The correct option is A.

What is a cylinder?

A cylinder is a 3D solid form made up of two bases that are parallel and identical and are connected by a curving surface. These bases resemble spherical disks. The axis of the cylinder form is a line drawn through the center or connecting the centers of two circular bases.

Given:

A cylinder has a volume of 20x⁶y⁴ units cubed.

The base of the cylinder has an area of 5x³y² units squared.

And the volume of the cylinder V = Base area x height.

So, 20x⁶y⁴ = 5x³y² (height).

The height of the cylinder = 20x⁶y⁴/ 5x³y²

The height of the cylinder = 4x³y²

Therefore,  4x³y² is the height of the cylinder.

To learn more about the cylinder;

https://brainly.com/question/16134180

#SPJ5

The complete question is given in the attached image.

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