Mathematics College

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

can you explain or tell me why thats the answer

Answers

Answer:

its uhh its2

Step-by-step explanatiits on:

278×125 k12k12k1k1k21k21k2k1212k1k21kk21k21k21k2k1k21k2

Answers

hajsjsjsjdjsjjahahagayaghdicidiabavabbwbebeb

Answer:

275 × 125 = 34,375

Hope this helps!! Please consider marking brainliest! Have a good one!!

Step-by-step explanation:

2 7 5

× 1 2 5

+ 1 3 7 5

+ 5 5 0

+ 2 7 5

= 3 4 3 7 5

the two pictures are the questions and question five is what i need help with.

Answers

Answer:yes they do

Step-by-step explanation:

Im going to be honest i rlly dk

Sandra's Bike Club had 360 members last month. Each member pays a $12 membership fee per month.
This month, 27 new members joined and 34 members left the club. How much money will Sandra collect
this month in membership fees?

Answers

Answer:

$4,236

Step-by-step explanation:

34-27=7

360-7=353

353(12)=4,236

Which statement is not true about the pattern sown?

Answers

Answer:each fraction is greater than the one before it is not true

Source:trust me bro

The one that is highlighted

Can anyone help me out? That would be greatly appreciated!

Answers

B. SAS

Pretty much the way I look at it, there is one angle, and 2 sides beside it. Easiest way for me to explain.

Answer:

Write an equivalent expression for 2(3x + 5).

Answers

Answer:

I suggest that you use Socratic to solve this.

Step-by-step explanation:

[tex]\huge\text{Hey there!}[/tex]

[tex]\huge\textbf{This equation requires us to do}\\\huge\textbf{distributive property.}[/tex]

[tex]\huge\textbf{If you're unsure what the}\\\huge\textbf{distributive property formula is,}\\\huge\textbf{it is: }[/tex]

[tex]\large\textbf{a(b + c)}[/tex]

[tex]\large\textbf{= a(b) + a(c)}[/tex]

[tex]\large\textbf{= ab + ac}[/tex]

[tex]\huge\textbf{Now, that we have that information}\\\huge\textbf{out of the way, we can find the}\\\huge\textbf{result of your given equation.}[/tex]

[tex]\huge\textbf{Your equation that you provided:}[/tex]

[tex]\large\textbf{2(3x + 5)}[/tex]

[tex]\large\textbf{= 2(3x) + 2(5)}[/tex]

[tex]\large\textbf{= 6x + 10}[/tex]

[tex]\huge\textbf{Do you see how interesting it was to}\\\huge\textbf{find the result to the question? }\huge\boxed{:)}[/tex]

[tex]\huge\textbf{Anyway! Let's label our result since}\\\huge\textbf{we found it already while working it out.}[/tex]

[tex]\huge\textbf{Thus, your answer should be: \boxed{\mathsf{6x + 10}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjo your day!}[/tex]

~[tex]\huge\boxed{\frak{Amphitrite1040:)}}[/tex]

5. If AABC = ADEF, find the measure of

Can someone explain me?

Answers

Answer:

Option A) angle B = 67°

Step-by-step explanation:

I'll use " [ " symbol for saying angle.

Alright so ...

since triangle ABC and triangle DEF are congruent

it means [ A = [ D

[ B = [ E

[ C = [ F

here [ A = 78° (which means [ D is also 78°)

and ..[ F = 35° (which means [ C is also 35°)

-->So now all you need to know to find [ B is to know the other two angles in the triangle. and thats where ..

you write.. [ A + [ B + [ C = 180° (angle sum property)

78° + [ B + 35° = 180°

113° + [ B = 180°

[ B = 180 - 113

= 67°

I hope that clears the concept , if you have any questions regarding it I'd love to help .

Please help me with this.

Answers

it takes 12 minutes to fill the bathtub!!

hope this helps ;))

Is a triangle whose sides measure 6 10 and 8 a right triangle?

Answers

Answer:

Step-by-step explanation:

They are equal, and thus, the triangle is a right triangle. ... These sides are 6: 8: 10, then the triangle is a right one.

Please help my sister is being super mean and my parents are working please help
Which statement is true about the points shown on the number line?
A)-3.8 1.5, and -3.8 is located to the right of 1.5.
D)-3.8 > 1.5, and -3.8 is located to the left of 1.5.

Answers

Answer:

2nd option on the top right

Step-by-step explanation:

tell your sister she sucks for not helping you ;)

The discrimination of a quadratic function is 13. Which is a true statement about the roots of the function?

Answers

Answer:

If the discrimination of a quadratic function is 13, then the function will have two distinct real roots.

Step-by-step explanation:

Given the quadratic function

[tex]y=ax^2+bx+c[/tex]

where D = b²-4ac is called the discrimination of a quadratic function.

The discriminant D=b²-4ac indicates the type of roots the equation may have.

If D > 0, then the equation has two distinct real roots.

Given that the discrimination of a quadratic function is 13.

i.e. D = 13

As D > 0, so the function will have two distinct real roots.

Thus, we conclude that if the discrimination of a quadratic function is 13, then the function will have two distinct real roots.

What is the zero of the function below?

A. x = -3

B. x = 1

C. x = -1

D. x = 9

Answers

The answer to your question is d

The answer is D hope that helps

6. When you find the unit rate of an item you are finding the cost of ____.

Answers

Answer:

kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk

Step-by-step explanation:

Danielle is paid $75 for 5 hours of work. How much does she make for 1
nour of work? *

HELP ME PLS

Answers

Answer:

the answer is 15$

Step-by-step explanation:

i did 75/5hrs which equal to 15 and if you get 15$ every 5 hrs you will get 75$

Answer:

Step-by-step explanation:

Cost over quantity $75 over 5 your going to one so you divide 5 by 5 to get 1 and what ever you do to da bottom u have to do da same to da top so 75 divided by 5 is 15 so 15 is your answer.

Hope dis helps:)

A student forgets to study for an exam consisting of ten multiple choice questions, each with three possible answers. Instead, the student will have to randomly guess, so that there is a 1 3 probability of getting any arbitrary question right. If 6 or more correct answers is a passing score, what

Answers

Complete question :

Answer:

0.07656

Step-by-step explanation:

Given that:

P(correct guess) = 1/3 ; p= 0.33333

Number of questions /trials = 10

P(x ≥ 6) = p(6) + p(7) + p(8) +... + p(10)

This is the sum of the probabilities of getting exactly 6, 7, 8, 9 or 10 questions.

Using the binomial probability calculator to save computation time :

P(x ≥ 6) = 0.07656

what is the slope kf the line that passes through (5,-11) and (-9,17)

Answers

Answer:

The slope is:

[tex]m=-2[/tex]

Step-by-step explanation:

Given the points

(5, -11)(-9, 17)

Finding the slope between the points using the formula

[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\left(x_1,\:y_1\right)=\left(5,\:-11\right),\:\left(x_2,\:y_2\right)=\left(-9,\:17\right)[/tex]

[tex]m=\frac{17-\left(-11\right)}{-9-5}[/tex]

[tex]m=-2[/tex]

Therefore, the slope is:

[tex]m=-2[/tex]

Thus, option A is true.

What is the common difference between successive terms in the sequence?
2, 8, 14, 20, 26, ...
-6
-4
4
6

Answers

6
If you subtract it from two or 14 from eight or 24 or 26 for 20 can all see that they are subtracted by six

2 4 6 8 10 12 14 16

PLEASEEE HELPPPP POSSIBLE 50 POINTS!!!!!

1. Terry ran around a circular track. If the radius of the track is 200 feet, how far did Terry run?
TYPE IN EXACT ANSWER DO NOT ROUND

2. sue has a circular picture that she wanted to frame. If the pictures frame diameter was 3.5 inches how much framing material did she need?

TYPE IN EXACT ANSWER DO NOT ROUND

3. Johnny wrapped a piece of string around a can of soup. If the soups diameter is 4 inches how long was the string Johnny use to wrap it?

TYPE IN EXACT ANSWER DO NOT ROUND

4. if the diameter of a circle is 3 feet what is the circumference? (use 3.14 for pi)

TYPE IN EXACT ANSWER DO NOT ROUND

5. The radius of a circle is 28 cm what is the circumference? (use 3.14 for pi)

TYPE IN EXACT ANSWER DO NOT ROUND

Answers

Answer:

1. 400π or about 125663.7061

2. 3.5π or about 10.99557429

3. 4π or about 12.56637061

4. 3π or 9.42 (I used 3.14 for pi like the directions said)

5. 56π or 175.84 (I used 3.14 for pi like the directions said)

Step-by-step explanation:

I'll add these later if you like.

What is 6/7 divided by 2/7

Answers

Answer:

Step-by-step explanation:

6/7 divided by 2/7

6/7 divide 7/2 (cancel out 7)

6 multiply 1/2 (reduce)

On a coordinate plane, a triangle has points A (negative 5, 3), B (negative 2, 4), C (negative 2, 2).
Triangle ABC is shown on the graph. What are the coordinates of the image of point B after the triangle is rotated 270° about the origin?

(4, 2)
(2, 4)
(–4, –2)
(–2, –4)
In the diagram, the length of segment QV is 15 units.

Line m is a perpendicular bisector of line segment S Q. It intersects line segment S Q at point R. Line m also contains points T and V. Line segment T S is 3 x + 2. Line segment S V is 4 x minus 1.
What is the length of segment TQ?

4 units
11 units
14 units
15 units

Answers

14 units did it and got it right

Find the measure of the exterior angle.

Answers

add the two angles withen the triangle and make that equal to the exterior angle

Solve the inequality. 4(x + 3) − 7 ≥ x + 3(x + 1)

Answers

Answer:

if want to know is true or flas. this is true

Step-by-step explanation:

Which inequality is true?

A number line going from negative 1 to 1.

One-half less-than one-third
Three-fourths greater-than two-thirds
Negative one-fourth less-than negative two-thirds
Negative 1 greater-than three-fourths

Answers

Answer:

The answer is C!

Step-by-step explanation:

I hope this helped!

Have a good day!or night, evening, afternoon, noon, or anything else!

The false statement is Negative one-fourth less-than negative two-thirds

what is Inequality?

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

Given:

A number line going from negative 1 to 1.

One-half less-than one-third

i.e., 1/2 < 1/3 is true

and, Three-fourths greater-than two-thirds

i.e., 3/4 > 2/3 is true

and, Negative one-fourth less-than negative two-thirds

i.e., -1/4 < -2/3 is false

and, Negative 1 greater-than three-fourths

-1 > -3/4 is true.

Learn more about inequality here:

https://brainly.com/question/28823603

#SPJ6

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