Mary has 30 hats. She has 5 green, 7 blue, 12 red, and 6 brown. If she selects two hats at random, what is the probability that both hats are different colors?

P(Picking one Green Hat and Something Else)=
P(Picking one Blue Hat and Something Else)=
P(Picking one Red Hat and Something Else)=
p(Picking one Brown hat and something Else)=
Add the probabilities together to answer the question

Answer:

It would take 3 minutes

Step-by-step explanation:

It takes a train going 50 mph approximately 11/2 miles to stop safely.

The distance a train takes to come to a stop can be determined by several factors, including the speed of the train, the weight of the train, the condition of the brakes and the track, and the reaction time of the engineer.

In general, a train going 50 mph will take about 1 1/2 miles or 8,000 feet to stop safely. This is because a train moving at 50 mph is traveling at about 75 feet per second, and it takes a significant distance to slow down a heavy object moving at such a high speed. It's important to note that this is an estimation, and the actual stopping distance may vary depending on the specific conditions.

To know more about Speed:

https://brainly.com/question/28224010

#SPJ4

2 + 7 < 18 inequalities represent the number of remaining hours Mr. Roy could be scheduled to work this week.

The term "inequality" in mathematics refers to a relationship among two expressions or values which are not similar to one another.

Both equations and inequalities are mathematical phrases created by connecting two expressions. The equal sign (=) in an equation denotes that the two expressions are regarded as equal. In contrast, an inequality indicates that the two phrases are not always equal by using the symbols " >, < , ≤ ,or ≥ ".

If x is 2, then 2+7 should equal 9, which is less than the amount Roy wanted to work, and would be the best option for him since he wanted to work for less than 18 hours.

To know more about inequality refer to:

https://brainly.com/question/24372553

#SPJ4

The complete question is as follows:

Mr. Roy is scheduled to work less than 18 hours this week. he has already worked 7 hours. if x is the remaining number of hours. Mr. Roy could work this week which inequalities represent the number of remaining hours Mr. Roy could be scheduled to work this week? select all that apply

A 2+7 > 18

B 2 + 7 < 18

C 2 +18 > 7

DI > 11

EI < 11

Time taken by Matilda on each project is \(5\frac{7}{12}\) hours.

According to the question we have been given that,

Total time taken by Matilda to complete the consulting projects = \(16\frac{3}{4}\) hours

First we will convert it into simple fraction which is

         \(16\frac{3}{4} = \frac{67}{4} \\\) hours

Number of consulting projects = 3

And Matilda spends same amount of time to each of the project.

To find the time she spend on each project is by using unitary method

that is,            3 projects = \(\frac{67}{4}\) hours

                      1 project = \(\frac{67}{4} / 3\)

                                     = 67/12

                                     = \(5\frac{7}{12}\) hours

Hence time taken by Matilda on each project is \(5\frac{7}{12}\) hours.

Learn more about unitary method here : https://brainly.com/question/24587372

#SPJ4

Answer:

Step-by-step explanation:

8 oz goes to 0.23/oz

10 oz goes to 0.29/oz

16 oz goes to 0.22/oz

Lastly, 12 oz goes to 0.26/oz

Hope this helps!

Explanation:

Divide the number of times blue came up (114) over the number of spins total (180). Ignore the 60% given to you. That's a theoretical value that doesn't play any part in determining an experimental probability.

114/180 = 0.633 approximately

The '3's go on forever. Round that however your teacher instructs.

Answer:

1. (36 - 8) + (7b + 4) = 28 + 7b + 4 = 7b + 32

Answer: 7b + 32

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

Answer: 2x + 7x^2

3. (5y^2 - 2y + 1) - (y^2 + y + 3) = 4y^2 - 3y - 2

Answer: 4y^2 - 3y - 2

4. (-7a^4 - a + 4a^2) - (-8a^2 + a - 7a^4) = -7a^4 - a + 4a^2 + 8a^2 - a + 7a^4

Simplifying the expression, we get:

-7a^4 + 7a^4 + 4a^2 + 8a^2 - a - (-a) = 12a^2

Answer: 12a^2

5. (2x^2 - 7x^3 + 8x) + (-8x^3 - 3x^2 + 4) = -15x^3 - x^2 + 8x + 4

Answer: -15x^3 - x^2 + 8x + 4

6. (4m^2 - 2m + 4) - (2m^2 + 2m - 5) = 2m^2 - 4m + 9

Answer: 2m^2 - 4m + 9

Correct me if I'm wrong.

Step-by-step explanation:

The velocity of the object is that has fallen through a height of 23 ft is 38.37 ft/s.

option B.

The velocity of an object can also be defined as the rate of change in the object's position corresponding to a frame of reference and time.

Mathematically, the formula for estimating the velocity of an object that has fallen through a height of h, is given as;

V = √64h

where;

When the height fallen by the object = 23 ft, the velocity of the object is calculated as;

V = √64h

V = √ (64 x 23 )

V = 38.37 ft/s

Thus, the velocity of the object is that has fallen through a height of 23 ft is 38.37 ft/s.

Learn more about velocity here: https://brainly.com/question/25905661

#SPJ1

Answer:

cat is 6 pumpkin is 12 pot is 14 so 6+14-12=8

Step-by-step explanation:

Answer:

wanna hear a dirty joke?

Step-by-step explanation:

Answer:

lol

Step-by-step explanation:

look below

hqhhahahahahahahahhaha

The point estimate for the parameter B based on the sample is approximately 0.284. We can calculate it in the following manner.

Given that X1, X2, X3, ... X14 is a random sample of size 14 taken from a Gamma distribution with unknown parameters a and B.

The method of moments is used to find the point estimate for the parameter, B, based on the following sample. The moment estimator for a parameter is a sample statistic that is used to estimate an unknown parameter. When the sample moments are equated to their corresponding population moments, these are called method of moments estimators. The population mean of a gamma distribution with parameters a and B is μ = a/B

The population variance of a gamma distribution with parameters a and B is σ² = a/B²

The first moment is the mean of the distribution, which is the same as the expected value of the gamma distribution. The second moment is the variance of the distribution. The method of moments estimation method is as follows: First Moment Estimation:μ = X = {X1+ X2+ X3+ ... X14}/14

Second Moment Estimation:σ² = S² = {Σ(Xi - X)²}/14 where X is the sample mean and S² is the sample variance.

By equating these to the corresponding population moments of gamma distribution, we get the estimators for a and B respectively. They are as follows: a = (X)² / S²B = (S²) / X

Now, we have the values of X and S² from the given sample. They are as follows: X= {0.50+0.88+0.40+0.80+1.14+0.71+0.49+1.45+0.65+0.62+1.04+1.89+0.29+0.79+0.2522}/14 = 0.84208S² = {Σ(Xi - X)²}/14 = 0.3058We need to find the point estimate for the parameter, B, based on the given sample.

B = (S²) / X = 0.3058/0.84208 ≈ 0.3632

Therefore, the estimate of parameter B is approximately 0.3632, using the method of moments. The correct option is the third option.
To estimate the parameter B using the method of moments, we first need to calculate the sample mean and the sample variance. However, you provided 17 data points instead of 14. We will use the first 14 data points for our calculation.

Data: 0.50, 0.88, 0.40, 0.80, 1.14, 0.71, 0.49, 1.45, 0.65, 0.62, 1.04, 1.89, 0.29, 0.79

1. Calculate the sample mean (µ):
µ = (ΣXi) / n = (0.50+0.88+0.40+0.80+1.14+0.71+0.49+1.45+0.65+0.62+1.04+1.89+0.29+0.79) / 14 ≈ 0.859

2. Calculate the sample variance (s²):
s² = (Σ(Xi - µ)²) / (n-1) ≈ 0.243 (after calculating)

Now, we can use the method of moments. For Gamma distribution, the mean and variance are:

Mean: µ = aB
Variance: s² = aB²

We have already estimated a point estimate for a (a-hat) using the method of moments:
a-hat = µ² / s² ≈ 0.859²/ 0.243 ≈ 3.023

Now we can estimate the point estimate for B (B-hat):
B-hat = µ / a-hat ≈ 0.859 / 3.023 ≈ 0.284

The point estimate for the parameter B based on the sample is approximately 0.284.

Visit here to learn more about gamma distribution brainly.com/question/28077799

#SPJ11

The point estimate for the parameter B is 9.14.

To use the method of moments to find a point estimate for the parameter B, we first need to set up the equations using the sample moments.

The sample mean is:

mu1 = (X1 + X2 + ... + X14) / 14

And the sample variance is:

mu2 = [(X1 - mu1)²+ (X2 - mu1)² + ... + (X14 - mu1)²] / 14

For a Gamma distribution with parameters a and B, the theoretical mean and variance are:

E(X) = a / B
Var(X) = a / B²

Setting the sample moments equal to the theoretical moments, we get:

mu1 = a / B
mu2 = a / B²

Solving for B in the first equation, we get:

B = a / mu1

Substituting this into the second equation, we get:

mu2 = a / (a / mu1)²

mu2 = a * mu1² / a²
mu2 = mu1²/ a

Solving for a in terms of the sample moments, we get:

a = mu1^2 / mu2

Substituting this into the equation for B, we get:

B = (mu1 / mu2)²

Now we can plug in the values from the sample:

mu1 = (0.50 + 0.88 + 0.40 + 0.80 + 1.14 + 0.71 + 0.49 + 1.45 + 0.65 + 0.62 + 1.04 + 1.89 + 0.29 + 0.79 + 0.2522 + 0.0011 + 0.2099) / 14 = 0.865

mu2 = [(0.50 - 0.865)² + (0.88 - 0.865)²+ ... + (0.2099 - 0.865)²] / 14 = 0.286

Plugging these values into the equation for B, we get:

B = (0.8691 / 0.2375)² = 9.14.

Therefore, the point estimate for the parameter B based on the sample is 9.14.

Learning more about two-parameter gamma distribution : https://brainly.com/question/31384316

#SPJ11

The claim that a random sample is representative of the population of interest is only true under certain conditions.

The concept of population and sample is crucial in conducting a survey. In a survey, a sample is a smaller group of individuals selected from a larger group, also known as the population.

When a sample is selected randomly from a population, it is said to be representative of the population of interest.

However, just because a sample is selected randomly does not guarantee that it is representative of the population.

Therefore, the claim that the sample of 500 students selected from the statistics classes is representative of the population of interest (all the students enrolled in the university) is only partially true.

If the population of all students enrolled in the university is homogeneous with respect to their opinions on foreign language classes, and if the random sampling process was carried out correctly, then it is possible that the sample is representative of the population.

To know more about sampling here.

https://brainly.com/question/29852583

#SPJ4

Answer:

slope = \(\frac{1}{2}\)

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 )

Given

2y - x = 4 ( add x to both sides )

2y = x + 4 ( divide all terms by 2 )

y = \(\frac{1}{2}\) x + 2 ← in slope- intercept form

with slope m = \(\frac{1}{2}\)

Answer:

a. y=x^2

Step-by-step explanation:

desmos graphing calculator

Answer:

They shared GHC16.2

Step-by-step explanation:

Here, we want to get the amount shared

Let us call the amount x

Total ratio is 5 + 4 = 9

Kwame had GHC 9

Thus;

5/9 * x = 9

5 * x = 9 * 9

5x = 81

x = 81/5

x = GHC 16.2

Answer:

1/3 = 3

Step-by-step explanation:

3* 1/3 = 1

1/3 = 1 (3)

1/3 = 3

Answer:

lesser: x = -3

greater: x = 3

Step-by-step explanation:

\(2x^{2} =18\\x^{2} =9\\x=-3, x=3\)

Answer:

rate of change = 5

Step-by-step explanation:

the slope m gives the measure of the rate of change of the function

calculate the slope m using the slope formula

m = \(\frac{y_{2-y_{1} } }{x_{2-x_{1} } }\)

with (x₁, y₁ ) = (3, 38) and (x₂, y₂ ) = (1, 18) ← 2 ordered pairs from the table

m = \(\frac{18-38}{1-3}\) = \(\frac{-20}{-2}\) = 5

then rate of change = 5

negative, positive. The y-component of the average acceleration of the object during the ascending part of the motion is negative, as the velocity is decreasing, and the y-component of the acceleration during the descending part of the motion is positive, as the velocity is increasing.

In ideal projectile motion, the acceleration of the object is only due to gravity, which acts in the negative y-direction. Therefore, the y-component of the acceleration of the object during the ascending part of the motion is negative, as the velocity is decreasing. At the peak of the motion, the velocity is zero, so the acceleration is also zero. During the descending part of the motion, the y-component of the acceleration is positive, as the velocity is increasing. The magnitude of the acceleration remains constant throughout the motion, and it is equal to the acceleration due to gravity (g). Therefore, the correct answer is b) negative, positive. This means that the y-component of the acceleration is negative during the ascending part of the motion, and it is positive during the descending part of the motion.

Learn more about average here

https://brainly.com/question/24057012

#SPJ4

Answer:

10-11 write a the slope-intercept form of the line with the given slope and point.10. m=4;(2,3)______________11. m=-2;(5,1)____________

The formula for slope intercept form is y = mx + b, where m represents the constant and b represent the y-intercept.

10. We know m is equal to 4. So let’s plug that into the equation.

y = 4x + b.

We are given the point (2, 3), so let’s plug that in and solve for b.

(2 is x and 3 is y)

3 = 4(2) + b

3 = 8 + b    Subtract 8.

-5 = b.

The equation is y = 4x – 5

11. We know m is equal to -2. So let’s plug that into the equation.

y = -2x + b

We are given the point (5, 1), so let’s plug that in and solve for b.

1 = -2(5) + b

1 = -10 + b     Add 10.

11 = b

The equation is y = -2x + 11

The probability that exactly two time zones will be represented in this group is 0.0364.

To solve this problem, we can use combinations to count the number of ways to choose four students from the 12 total students, and then count the number of ways to choose exactly two time zones to be represented in the group.

There are a total of C(12, 4) = 495 ways to choose four students from the 12 total students.

To choose exactly two time zones, we can consider the following cases:

Case 1: Two time zones each have two students.

There are C(3, 2) ways to choose 2 students from the 3 in PST, and C(2, 2) ways to choose 2 students from the 2 in MST, C(2, 2) ways to choose 2 students from the 2 in CST, and C(5, 0) ways to choose 0 students from the 5 in EST. The number of ways to choose two time zones in this case is C(3, 2) * C(2, 2) * C(2, 2) * C(5, 0) = 3.

Case 2: Two time zones have one student each, and the other two time zones have no students.

There are C(3, 2) ways to choose 1 student from the 3 in PST, and C(2, 1) ways to choose 1 student from the 2 in MST, C(2, 1) ways to choose 1 student from the 2 in CST, and C(5, 0) ways to choose 0 students from the 5 in EST. The number of ways to choose two time zones in this case is C(3, 2) * C(2, 1) * C(2, 1) * C(5, 0) = 12.

Case 3: Two time zones have two students each, and the other two time zones have none.

There are C(3, 2) ways to choose 2 students from the 3 in PST, and C(2, 2) ways to choose 2 students from the 2 in MST, C(2, 0) ways to choose 0 students from the 2 in CST, and C(5, 0) ways to choose 0 students from the 5 in EST. The number of ways to choose two time zones in this case is C(3, 2) * C(2, 2) * C(2, 0) * C(5, 0) = 3.

Thus, the total number of ways to choose four students with exactly two time zones represented is 3 + 12 + 3 = 18.

The probability of choosing four students with exactly two time zones represented is the number of ways to choose four students with exactly two time zones represented divided by the total number of ways to choose four students, or:

P(exactly two time zones) = 18/495 = 0.0364 (rounded to four decimal places).

Therefore, the probability of exactly two time zones being represented in the group of four students is 0.0364, or approximately 3.64%.

To know more about Probability:

https://brainly.com/question/30034780

#SPJ4

Answer:

f^-1(x)=2x/x-1

Step-by-step explanation:

Answer:

f-1(x) = 2x/x-1

Step-by-step explanation:

Bottom left

I checked my work with Chegg

Answer:

144 oz

Step-by-step explanation:

Answer:  If i'm not mistaking its 144 oz.  If that's what the question is asking you.  Hope this helps <3.

Answer:

4x−2

Step-by-step explanation:

Answer:

4x -2

Step-by-step explanation:

-2x+3-(5-6x)

Distribute the minus sign

-2x+3-5+6x

-2x+6x +3-5

4x -2

Answer: -0.533333333 The 3 goes on forever (repeated)

Step-by-step explanation:

Answer:

where is the rest of the question??

The number of local residents (320) is a sample of the total population.

In this scenario, the total population is represented by the 3000 people attending the concert. Out of this total population, only 320 individuals are identified as local residents. The number of local residents (320) is considered a sample because it represents a subset of the larger population.

A sample refers to a smaller group or subset of individuals selected from a larger population to gather information or make inferences about that population. In this case, the 320 local residents are a sample from the total population of 3000 people attending the concert.

The other answer choices do not accurately describe the relationship between the local residents and the population. The property of being a local resident is not a parameter of the population since it does not describe a characteristic of the entire population. It is also not a sample statistic or a variable as defined in the context of this scenario.

To know more about total population click here :

https://brainly.com/question/32585742

#SPJ2

The complete question is :

Out of a total of 3000 people attending a concert; only 320 are local residents. Which of the following is true? Select the correct answer below: The number of local residents (320) is sample of the total population. The property of being a local resident is a parameter of the population. The property of being local resident is the sample statistic_ The property of being local resident is a variable.

Answer:

84

Step-by-step explanation:

\( {a} {}^{2} - 2ab + b ^{2} = (a - b) { }^{2} \)

Step-by-step explanation:

3/5 - 1/3 = 4 /15

5/6 - 2/3 = 5/6 - 4/6 = 1/6

7/9 - 2/3 = 7/9 - 6/9 = 1/9

5/8 - 1/6 = (15 - 4) /24 = 11/24

(All the above ones I have taken common factor and subtracted them)

5 x 9/10 = 45/10 = 9/2 (simplified)

2/7 x 3 = 6/7

3 x 2/15 = 6/15

4x 2/6 = 8/6 = 4/3 (simplified form)

Hope this helps!!!

The wages earned by the worker after assembling 300 parts is $90.

The equals sign indicates that two expressions in a formula, also known as an equation, are equal.

Given:

The no of parts assembled by the worker, n = 250,

The wage he gets, r = $75

The wage earned to assemble one part = 75 / 250 = $0.3

So, the wage earned by worker by assembling 300 parts = 0.3 × 300 = $90

Therefore, the wage earned by the worker after assembling 300 parts is $90.

To know more about equation:

https://brainly.com/question/12788590

#SPJ1