Ellen has a bag with 3 red marbles and 2 blue marbles in it. She is going to randomly draw a marble from the bag 300 times, putting the marble back in the bag after each draw. 3 red marbles and 2 blue marbles What is the best prediction for the number of times that Ellen will draw a blue marble?

Answers

Answer 1

Answer:

120

Step-by-step explanation:

Blue marbles = 2

Red marbles = 3

Total marbles = 2 + 3 = 5

If a marble is drawn 300 times ;prediction for the number of times a blue marble will be drawn :

P(drawing a blue marble) = number of blue marbles / total number of marbles

= 2 /5 = 0.4

Predicted number of times blue is drawn in 300 selections :

300 * 0.4 = 120

Approximately 120 times


Related Questions

Write the fraction as a decimal.
Round to the nearest hundredth.
7/18~ [?]

Answers

Answer:

0.39

Step-by-step explanation:

7/18= 3.888888888

round up

0.39

I need help with this question

Answers

Answer:

Part A

D

Part B

76

Step-by-step explanation:

I don't know how to explain it

Similar polygons
10 points!!

Answers

Answer:

7

Step-by-step explanation:

if the stick is 7.5 divide that by 3 and you get 2.5 so divide 17.5 by 2.5 and you get 7 .

Seven feet (d) is correct

Identify the Slope and y - intercept with this given equation y = 3x + 4

Answers

Slope: 3
y-intercept: (0,4)

Answer:

Slope =3

Y- intercept =(0,-4)

Step-by-step explanation:

Write the equation in slope-intercept form: 2x + y =3
y= 2x + 3
y= -2x -2
y= -2x + 3
y= 2x-3

Answers

it is y=-2x+3 because once you take the 2x to the other side it becomes negative.

What's the distance between -19 and 82?

Answers

I think its 101 maybe

Answer:

101

Step-by-step explanation:

pls halp
Which of the following would be the correct formula for determining the volume of the cone shown below?

Answers

1/3 (4^2) 5 = V (the first one!)

What is the percent decrease from 20 to 11?​

Answers

Answer:

The decrease from 20 to 11 is 9, and that is 45% of 20.

Hope this helps!

It should be 9, sorry if it’s wrong tho

round off to the nearest hour 10 :54​

Answers

Answer:

11

Step-by-step explanation:

the closest whole number on the hour is 11

Giving brainliest!!!Please help.. :(

Select the statement that describes this expression: 5 x (3 + 4) − 4.

A) 5 times the sum of 3 and 4, then subtract 4
B) 5 times 3 plus 4 minus 4
C) 5 more than the sum of 3 and 4, and then subtract 4
D) 5 times 3 plus the difference of 3 and 4

Answers

A is the answer 5 times the sum of 3 and 4 then subtract 4

Answer:

A

Step-by-step explanation:

A the anser is A deal with it...

To decide if 12.5 centimeters is greater than 140 millimeters, the first step is to set up a proportion. Which of the following proportions are correct?


A. 10mm/1cm = x/140mm
B. 1cm/10mm = 12.5cm/x
C. 10mm/1cm = 140mm/x
D. 12.5mm/1cm = 140mm/x

Answers

The answer is The one option C

PLEASE HELP ASAP
find JL

Answers

Answer:

7

Step-by-step explanation:

Which of these is a function please answer.

Answers

Answer:

1 and 3

Step-by-step explanation:

Answer:

Options 1 and 4

Step-by-step explanation:

Option 1

x-values are different and y-values are sameThis is a function

Option 2

x-values are repeated (3) with different y-valuesThis is not a function

Option 3

x-values are repeated and y-values are differentThis is not a function

Option 4

x- values are different, y-values are differentThis is a function

Garth is building a square shaped frame for a mirror. The area of the mirror is 144 square inches. How long is each side of the frame, in inches?

Answers

Answer: 12 inches

Step-by-step explanation:

This is a square shaped mirror which means that it takes the shape of a square.

All sides on a square are equal and because the way the find the area of a square is to multiple the Length by the Width, you would be squaring the same number to find the area.

Length of each side = √area

= √144

= 12 inches

You told your friend that you could eat 3/5 of a large pizza. If you only ate 1/2 of what you said you could eat, what fraction of a large pizza did you eat?

Answers

Answer:

3/10

Step-by-step explanation:

3/5 is equal to 6/10, and half of 6/10 is 3/10

Answer:

3/10

Step-by-step explanation:

Amount of pizza u told= 3/5

Amout u could eat of  wht u told = 1/2

Amount u could eat of pizza = 3/5 x 1/2 = 3/10

(calculation attached below)

I hope im right!!

Help please!!

Rogelio has $34 and he wants to buy a jacket for $75. He works with
his uncle on the weekends for $8 an hour.
Which inequality represents the number of hours (h) Rogelio could
work to earn at least enough money to buy the jeans?

Answers

The answer to this problem is B

What is the image point of (2, 4) after a translation left 4 units and
down 1 unit?

Answers

(-2,3) should be the point

The diagram below shows a banquet hall’s plans to install a new dance floor.

What is the area of the new dance floor in square feet?

Answers

Answer:

333 ft squared

Step-by-step explanation:

18 x 18.5 = 333

Find the value of x.

Answers

Answer:

6

Step-by-step explanation:

Because they are the same

Reflect across the y-axis. Fill in the new coordinates below:

Answers

Answer:

A(-1,2)

B(-4,4)

C(-3,1)

Step-by-step explanation:

simply reflect across the y-axis. pls give brainliest

Which is the equation of a line with a slope of -1 and a y-intercept of -6?
A y = -6x - 1
B y = -x - 6
C y = x - 5
D y = x + 6

Answers

I say A, because of it both being negative & having a y intercept .

Answer:

B

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = - 1 and c = - 6 , then

y = - x - 6 → B

hi i would rly appreciate ur help on this. I need to write these expressions as products:
1. ((a+1)^3)+(x^3)
2. ((y-2)^3)-27
3.((a-b)^3)+b^3
4. (8x^3)+((x-y)^3)
5. (27a^3)-((a-b)^3)
Thank you so much i rly appreciate it

Answers

Answer:

1.)   ((a+1)^3)+(x^3)  = a^3 + 3a^2 + 3a + x^3 + 1

2.)  ((y-2)^3)-27  =   (y^2-y + 7) x ( y - 5 )

3.)   ((a-b)^3)+b^3  = a (a^2 - 3ab + 3b^2 )

4.)   (8x^3)+((x-y)^3)  =  9x^3 -3x^2 y + 3xy^2 - y^3

5.)   (27a^3)-((a-b)^3) = 26a^3 + 3a^2 b - 3ab^2 + b^3

5) factor = (a+b)(a+b)^ 2    if a is squared and if b is cubed and moved over to = 0 then we can find (a+b)(a+b)^2 but in all cases of quadratics you can set (x -1 ) = 1 and (x-1 ) = 1  so they are always positive. Which is the same if they start of negative.

For question 5 we have a factor solved (a+b)(a+b)^ 2

Which means the same as this expansion

(

Find a solution to the equation 4(x + 7) = 38

Answers

Answer:

4(x+7)=38

4x+28=38

4x=38-28

4x=10

(divide by 4)

x=2whole number 2/4

=2whole number 1/2

or x=2.5

Find the number of possible outcomes. A coffee shop offers small, medium, and large sizes. Customers can choose between French roast, Italian roast, and American roast

PLS HELP! ASAP!!!

Answers

Answer:

9

3 different sizes times 3 different flavors.

3x3=9

HELP NEED THIS FOR A TEST!!! 20 POINTS!!

Diego's family car holds 14 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when remaining fuel is 1.5 gallons or less.

Answers

Answer:

a.

capacity of car = 14 gallons

consumption of fuel in one day = 0.6 gallons

consumption of fuel in 14 days = 14 x 0.6 = 8.4 gallons

fuel remaining in car = 14 - 8.4 = 5.6 gallons

so they can drive the car without warning.

b.

consumption of fuel in one day = 0.6 gallons

consumption of fuel in 25 days = 25 x 0.6 = 15 gallons

fuel remaining in car = 14 - 15 = -1 gallons

so they can't drive the car without warning.

c.

the expression 14 - 0.6t represents remaining fuel in the vehicle, where t represents number of days.

d.

14 - 0.6t = 1.5

or - 0.6t = 1.5 - 14 = - 12.5

or t = -12.5 / - 0.6

or t = 20.8333 days

so he can drive 20 days without warning.                                                                                         E.

14 - 0.6t < 1.5

or t < 20.8333

here t represents number of days car can drive without warning light.

Step-by-step explanation:

The inequality is  

The maximum number of days that Diego's father can drive the car without the warning light coming on is 20 days

14 gallons-1.5 gallons=12.5 gallons  

we know that

If the remaining fuel is greater than  1.5 gallons Diego's father can drive the car without the warning light coming on  

so

Let

x ----> the number of days

 ----> inequality that represent the situation

Solve for x

The maximum number of days that Diego's father can drive the car without the warning light coming on is 20 days

On a snowy winter's eve, two candles are lit at the exact same time. A 18-inch candle and a 21-inch
candle are lit at the exact same time. The 18-inch candle burns 2 inches every hour. The 21-inch
candle burns 3 inches every hour.

Answers

25 more minutes the candle was burning

find the inverse of y=100-x^2

Answers

Answer:

The inverse  is ±sqrt(100-x)

Step-by-step explanation:

To find the inverse, exchange x and y

x = 100 -y^2

Solve for y

Subtract 100 from each side

x - 100 = -y^2

Divide by -1

-x +100 = y^2

Take the square root of each side

±sqrt(100-x) = sqrt(y^2)

±sqrt(100-x) =y

The inverse  is ±sqrt(100-x)

Write an equation of the line that passes through the given point and has the given slope.
(4, 3); slope 1/2

Answers

Answer:

y = 1/2x + 1

Step-by-step explanation:

m = 1/2

Slope-intercept:

y - y1 = m(x - x1)

y - 3 = 1/2(x - 4)

y - 3 = 1/2x - 2

y = 1/2x + 1

Which table represents the function?

Answers

D because they all increase by the same number (+1)
The answer is DDDDDD

If (44)x = 432, what is the value of xIf (44)x = 432, what is the value of x?

4
7
8
28

Answers

Answer:

x = 8

Step-by-step explanation:

44x = 432

divide both sides by 44

[tex]\frac{44x}{44} = \frac{432}{44}[/tex]

x = 9.8

since 8 is the closest number, that would be your answer

Other Questions
A solution has a volume if 259 mL and contains 0.70 mol MaCl. What is its molarity Researchers once surveyed college students on their Face book use. The following two-way table displays data for the sample of students who responded to the survey.How many students in the survey were in the age category of 18 to 22?_____ students. Gwinnett chaired a committee that wrote the how is a corm different from a bulb? Jenna supervises a group of employees who are highly trained andmotivated. Based on this information, which type of management styleshould Jenng employ?A. DirectingB. SupportingC. DelegatingD. CoachingSUBMIT Rate 1-30 Who ever answers truthfully can get branliest I need help ASAPquestions:1. what is the measure of angle K?2. What is the measure of angle M?3. what is the value of "x"? hi please help!!! ill give you a brainless answer (question in picture) HELP ME ASAP...The bus was completely empty when the bus driver began his day. The first bus stop was in the middle of the busy city.a. The bus will stay empty.b. The bus will fill with passengers.c. The bus driver will turn around and go home. Find the indicated side of theright triangle.45645y = [?]/Enter write two sources of each of Nitrogen Phosphorus and potassium required for the growth of plant Estimate the perimeter of the figure to the nearest whole number. 60 kids get pick 29 play sports there are 887 kids how many play sporta)1,835b)2c)713d)428 how does the simple cuboidal epithelium do its function 9. "He had never slept in a better bed, Rainsford decided." (Paragraph 207) What is the overall effect of the last line of thestory?Help ion think the one I chose right Lynn had 90 flyers to hang up around school she gave 12 flyers to each of three volunteers then she took the remaining flyers and divided them up equally among the three volunteers what is the correct preposition for he is angry........the damage to his bicycle? i need help in this qs :0 Identification of Audits and Auditors. Audits may be characterized as (a) financial statement audits, (b) compliance audits, (c) economy and efficiency audits, and (d) program audits. The work can be done by independent (external) auditors, internal auditors, or governmental auditors (including IRS auditors and federal bank examiners). Following is a list of the purpose or products of various audit engagements. [Students may need to refer to Chapter 1.]a. Analyze proprietary schools spending to train students for oversupplied occupations.b. Determine the fair presentation in conformity with GAAP of an advertising agencys financial statements.c. Study the Department of Defenses expendable launch vehicle program.d. Determine costs of municipal garbage pickup services compared to comparable service subcontracted to a private business.e. Audit tax shelter partnership financing terms.f. Study a private aircraft manufacturers test pilot performance in reporting on the results of test flights.g. Periodically have U.S. comptroller of currency examine a national bank for solvency.h. Evaluate the promptness of materials inspection in a manufacturers receiving department.i. Report on the need for the states to consider reporting requirements for chemical use data.j. Render a public report on the assumptions and compilation of a revenue forecast by sports stadium/racetrack complex.Required:Prepare a three-column schedule showing (1) each of the engagements listed, (2) the type of audit (financial statement, compliance, economy and efficiency, or program), and (3) thekind of auditors you would expect to be involved. how does the moon fit into the discussion of sustainable ecosystems? how will its disappearance influence ecosystems