Ajar contains 3 blue marbles and 2 red marbles. A marble is randomly selected from the jar and replaced, and then a second marble is chosen. The probability that a blue marble was chosen both times is %.​

Answers

Answer 1

Answer:

40% probability

Step-by-step explanation:

First, you need to look at the sample space or number of outcomes:

B B B R R

The sample space, or number of outcomes, is 5

If you randomly select one marble and then select another marble after replacing it, you are taking out 2/5 of the marbles in the jar.

B  B  B R  R

1/5 2/5 3/5 4/5 5/5

2/5 can be converted into a percentage by turning it into a decimal:

2/5 = .4

.4 can be converted into a percentage

.4 = 40%

This leaves you with the probability being 40%

Answer 2

Answer: it’s 30%

Step-by-step explanation:


Related Questions

What is the probability of choosing a red card from a deck of cards? Type your answer as a fraction.

Answers

Answer:

26/52 or 1/2

Step-by-step explanation:

There are 1-9, King, Queen, Jack, for both Diamonds and Hearts

What is the domain of (-2, 5), (8, 6), (3, 12) (2, 6)

Answers

Answer:

The domain is (-2, 8, 3, 2)

Step-by-step explanation:

The domain is such because domain is the x-element or the one you see at first in the ordered pairs.

Please help me with this question.

Answers

Answer:

A

Step-by-step explanation:

F(-2)= 4(-2)-1= -9

G(-2)= (-2)^2-3= 1

f(-2)-(g-2)= -9-1= -10

If a population of 10,000 increases by 5% every year, about how large will the population be in 5 years?

Answers

Answer:

12763

Step-by-step explanation:

Find the value of x in the triangle shown below.
a. x=80
b. x=48
c. x= 32
d. x=12

Answers

Answer:

solution given:

by using Pythagoras law:

h²=p²+b²

x²=8²+4²

x=√80units

What is the volume of a rectangular prism that is 250 centimeters by 2 meters by 1.4 meters in cubic meters?

(A) 5.9m
(B) 252.8m
(C) 7m
(D) 700m

Answers

Answer:

your answer is 7 meters

I hope it's helps you ❤️

Answer is 7m. Your welcome

34 divided by 8 please I’m helping a kiddo out

Answers

4.25 that’s the answer

Answer:

4.25.                                            

           

8 divides into 34 4 times, which is 32, then do 34−32, which is 2 (make sure to add your decimal) , then drop the 0 and it goes into 20 twice, subtract and get 4, drop a 0, then subtract 40 by 40 again and get 4.25

Based on your understanding of the ideas of external consistency and fruitfulness, which of the following statements best describes the relevance of these ideas to the acceptance of hypotheses?
1. A fruitful hypothesis is considered stronger because fruitful hypotheses are always externally consistent with previously held theories
2. A fruitful hypothesis is considered stronger because fruitful hypotheses promote scientific progress by revealing new avenues of research and analysis
3. An adequate theory is always a fruitful theory
4. AB internally coherent theories are fruitful.
Which of the following scenarios best demonstrates the idea of fruitfulness?
1. The fundamental rules of quantum mechanics were established during the first half of the twentieth century by numerous scientists to deal with atomic and subatomic systems. Today, quantum mechanics provides the underlying mathematical framework of many fields of physics, including condensed matter physics, solid state physics, and nuclear physics
2. While both Einstein's theory of general relativity and quantum theory are indisputably supported by empirical evidence, scientists have as yet been unable to incorporate both of them within one cohesive model
3. The predictions of quantum mechanics correspond to the predictions of the classical theories of physics when the quantum theory is used to describe the behavior of systems that can be successfully described by classical theories
4. Ordinantly, quantum mechanics is used to describe the behavior of bodies that are so smal that they cannot be seen under an optical microscope, while the theories of classical physics we used to analyze the behavior of large-scale bodies.

Answers

Answer:

Based on your understanding of the ideas of external consistency and fruitfulness, which of the following statements best describes the relevance of these ideas to the acceptance of hypotheses?

2. A fruitful hypothesis is considered stronger because fruitful hypotheses promote scientific progress by revealing new avenues of research and analysis

Which of the following scenarios best demonstrates the idea of fruitfulness?

4. Ordinantly, quantum mechanics is used to describe the behavior of bodies that are so smal that they cannot be seen under an optical microscope, while the theories of classical physics we used to analyze the behavior of large-scale bodies.

Step-by-step explanation:

Write the number in standard form eight-one

Answers

Answer:

81

Step-by-step explanation:

because eighty one = 81

High point question. SAT prep

Answers

Answer:

[tex] log_{a}(a) \ + log_{a}( {10}^{ - 4} ) = 1 + \frac{ - 4}{ log_{10}(a) } = 1 + \frac{ - 4}{b} = \frac{b - 4}{b} [/tex]

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Solve the following pair of simultaneous equation using elimination method.
3x_2y=7
X+2y= _3

Answers

Answer:

x = 1 and y = −2

Step-by-step explanation:

Rewrite equations:

x + 2y = −3

3x − 2y = 7

Step 1: Solve x+2y=−3 for x:

x + 2y = −3

x + 2y + −2y = −3 + −2y (Add -2y to both sides)

x = −2y − 3

Step 2: Substitute −2y − 3 for x in 3x − 2y = 7:

3x − 2y = 7

3(−2y − 3) − 2y = 7

−8y − 9 = 7 (Simplify both sides of the equation)

−8y − 9 + 9 = 7 + 9 (Add 9 to both sides)

−8y = 16

−8y/−8 = 16/−8 (Divide both sides by -8)

y = −2

Step 3: Substitute −2 for y in x = −2y − 3:

x = −2y − 3

x = (−2)(−2) − 3

x = 1 (Simplify both sides of the equation)

Brand A and brand B of frozen green beans both list a weight of 32 ounces on their bags. Because of variability in the manufacturing process, the bags often contain slightly more, or less, than 32 ounces of green beans. An inspector takes a random sample of 25 bags of green beans of each type and records their weights. The weights and their relative frequencies are summarized in the histograms. 2 histograms comparing brand A and brand B of green beans. The median weight for brand B is less than the median weight of brand A. Which of the following is a true statement when comparing the bags of green beans? The median weight for both types is between 32.1 and 32.2 ounces. The median weight for both types is between 32.0 and 32.1 ounces. The median weight for brand B is less than the median weight of brand A. The median weight for brand B is greater than the median weight of brand A.

Answers

Answer:

The answer is: B.)32.0–32.1 ounces

Step-by-step explanation:

Got it right on my test

The true statement is The median weight for both types is between 32.0 and 32.1 ounces.

What is data?

Data is referred to as a collection of information gathered by observations, measurements, research, or analysis. It may comprise facts, figures, numbers, names, or even general descriptions of things. Data can be organized in the form of graphs, charts, or tables for ease in our study.

Given:

Brand A and brand B of frozen green beans both list a weight of 32 ounces on their bags.

The median weight for brand B is less than the median weight of brand A.

So, if both brands weigh 32 ounces then the median weight for both types is between 32.0 and 32.1 ounces.

Learn more about data here:

https://brainly.com/question/10980404

#SPJ6

Find the distance between F and G

Answers

Answer:

10 units

Step-by-step explanation:

a resposta certa e 10 unidades

You estimate that a kitten weighs 15 pounds. The actual weight of the kitten is 8 pounds. Find the percent error.

Answers

Answer:

87.5%.

Step-by-step explanation:

This is simple. You thought the kitten weighed 15 pounds but really weighs 8. The first thing you would do is subtract the guess minus the actual.

15 - 8 = 7.

That person was off by 7.

So you would put it as a fraction over the actual weight. 7/8. Then turn your fraction into a decimal and turn that decimal into a percent.

7 divided by 8 = 0.875.

0.875 as a percent is 87.5%.

So the percent error is 87.5%.

Ms. De Leon wants to produce different sets of test questions for her essay test. If she plans to do this by putting together 3 out of 5 questions she prepared, how many different sets of questions could she contruct?
A.10
B. 20
C. 60
D. 80​

Answers

The correct answer is b

12. Find the highest common factor that divides 24,36, and 72
without learning a remainder.​

Answers

Answer:

Your answer is 12

Because the three numbers 24,36,72 are the factors of 12

If you are helped with my answer pls tag me brianliest

THANK YOU....

A report by the US government states that 85,5% of citizens have a cell phone. You want to calculate the probability that exactly 36 out of 48 people in your study group have cell phones.

Answers

Answer:

0.0214 = 2.14% probability that exactly 36 out of 48 people in your study group have cell phones.

Step-by-step explanation:

For each citizen, there are only two possible outcomes. Either they have a cellphone, or they do not. The probability of a citizen having a cellphone is independent of any other citizen. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

A report by the US government states that 85,5% of citizens have a cell phone.

This means that [tex]p = 0.855[/tex]

You want to calculate the probability that exactly 36 out of 48 people in your study group have cell phones.

This is [tex]P(X = 36)[/tex] when [tex]n = 48[/tex]. So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 36) = C_{48,36}.(0.855)^{36}.(1-0.855)^{12} = 0.0214[/tex]

0.0214 = 2.14% probability that exactly 36 out of 48 people in your study group have cell phones.

HELP ASP!!!! PLS?!!!!! #15

Answers

Answer:

you need the farmula lol lol lol lol lol lol lol

Step-by-step explanation:

7. What is the area of a triangle whose base is 14 cm and a height of 12 cm? ​

Answers

Answer:

84 cm²

Step-by-step explanation:

1/2x14x12=84

The answer is 84 because h•n/2 14•12/2= 84

HELP ME PLSSSS

Heights of Males (in inches)



The heights of eight males in inches were used to make the box plot shown above. Which of the following is the median of the set of heights?
A. 69
B. 75.5
C. 73
D. 73.5

brainliest, extra points.

i understand if u need points , so u can go to my old questions and answer.

pls only answer if your for sure it's correct!

Answers

D 73.5

The median is usually notated by the line in the rectangle. The median means that half of the numbers are larger than that number, and half smaller.

Answer: The answer is 73.5 100000%

Step-by-step explanation: i took the test

In an expression when should be completed addition or multiplication

Answers

Multiplication I think? Because of PEMDAS

However, if it’s an equation that u are solving for a variable, then the first operation that should be undone first is addition

plsss help me and fast

Answers

Answer:

234 Square Inches

Step by Step Explanation:

To find the area of a parallelogram, we must first find the height. In this case, it is 18. Then, we must find the base. In this case, it is 13. Then, we multiply base x height for our final answer of 234.

Base - 13

Height - 18

18 x 13 = 234.

Easy enough?

A professional pool player claims that she sinks at least one ball in a pocket on 80% of her opening break shots. In a recent set of 20 games, she sunk at least one ball on her break shot in only 14 of the games. A simulation of 100 trials was conducted to see how unusual these most recent games are.

Based on the dotplot of the simulation results and the pool player’s last 20 games, which conclusion can be drawn?

The player’s true probability of sinking at least one ball on her break is 27%.
Another 100 simulated trials would show a much different outcome; therefore, we cannot draw any conclusions.
It is most likely that she would sink at least one ball during her break exactly 16 times.
There is about a 27% chance of her sinking at least one ball on her break 14 or fewer times in 20 games. This result is not unusual and there is no convincing evidence that her average is less than 80%.

Answers

Answer: B

Step-by-step explanation:

Plz help this is due today AND NO LINKS OR GROSS PICTURES OR I REPORT.

Answers

Answer: D, an equilateral triangle has three congruent sides.

Answer: D

Step-by-step explanation: An equalterial triangle has 3 congruent sides!

I hope this helps! May God bless you! :)

What is the domain? I think it’s (-4,-3)

Answers

Answer:

all real numbers

Step-by-step explanation:

As the graph goes up, it keeps going up and to the right. There is nothing telling us it will stop moving to the right at a certain point. It goes up much faster than it goes right, but it keeps going right and up forever. That makes the domain reach positive infinity. The same happens on the left side. As it goes down to the left, it keeps going left forever to negative infinity. That makes the domain all real numbers from negative infinity to positive infinity.

Domain: all real numbers

The Answer Is All Real Numbers

This is because the graph extends to all x values which makes this corrects.

a machine shop has a fixed cost of $2000 to produce new bolts. The cost of materials and labor to produce each individual bolt is $8.50. Which of the following functions models the average cost per bolt for the company to produce x bolts, where
x>1?

Answers

Answer:

(8.50x + 2000)/x and x>1

Step-by-step explanation:

Well, this may not be the exact answer, as it seems you have the choices unlisted--if they even exist at all. But, I'll make do with what I've provided, so

In the question, it says the collective cost for each individual bolt is $8.50, and that we can use the variable x to represent the number of bolts the company wishes to produce. So, this can be shown using 8.50x.

The fixed cost is set in stone, so no alterations need to be applied, and only cause the total to amount to a greater number. So, we end up with (8.50x + 2000)/x and x>1 is the rule for the values of x. Essentially, all that means is that the company will always produce more than one bolt.

Solve

FIND THE SIMPLE INTEREST WHEN PRINCIPAL= $300, rate = 8%
Time= 4 years





WILL GIVE BRAINLIST


X
X

X
X
X
X
X
X
X
X
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Answers

ANSWER: $9900

P( 1+rt)
300( 1+ (8X4)

Answer:

408.14

Step-by-step explanation:

The equation would be 300(1.08)^4, this is because when finding interest you use the formula principal(1+%)^time

last step
merical simplification until the
1
Exercise 19c
Use the value 27 for n in this exercise.
Calculate the volume of a cylindrical steel
bar which is 8 cm long and 3.5 cm in
diameter.
2 The tank on a petrol lorry is a cylinder 2 m
in diameter and 7 m long.
a
Calculate its volume in m?.
b Find its capacity in kilolitres.​

Answers

Answer:

77 cm^3

22 m^3

22 kl^3

Step-by-step explanation:

volume of a cylinder = nr^2h

n = 22/7

r = radius

the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.

A radius is half of the diameter

1. Radius = 3.5 / 2 = 1.75

Volume = (22/7) x (8) x 1.75^2 = 77 cm^3

2. radius = 2/2 = 1m

Volume = (22/7) x (7) x 1^2 = 22 cm^3

1 meter = 1 kilolitre

capacity = volume

capacity = 22 kl^3

What are the solutions to 2(x+1^2)=18

Answers

Answer:

2( x + 1) = 18

2x + 2 = 18

2x = 16

x = 16/2 = 8

what is 2/5 plus 1/10

Answers

Answer:

1/2

Step-by-step explanation:

2/5 = 4/10

4/10 + 1/10 = 5/10

5/10 = 1/2

Answer:

decimal form-0.5, fraction form-1/2

Step-by-step explanation:

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