Identify the incorrect Algebra forms that multiplication is represented in the expressions 5 times 3x.
A 5(3x)
B (5) x (3x)
C (5)3x
D 5(3)(x)

The sample mean is indeed a random variable because the value of the sample mean depends on the characteristics of the specific random sample. The sample size multiplied by the population mean yields the expected value of the sample sum.

What is random?
The lack of pattern or predictability in events, whether it be apparent or real, is referred to as randomness. Sometimes there is no order or discernible pattern or combination in a random series of events, symbols, or processes.

What is mean?
A collection of two or more numbers' mean is simply their simple mathematical average. There are various methods for calculating the mean for a given collection of numbers, including the arithmetic mean approach, which adds up the series' values, and the geometric mean method, which averages a group of products. The majority of the time, all of the fundamental approaches to calculating a basic average, however, yield the same rough result.

As the population is a huge number and not linear in growth we prefer to take random variable.

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Answer:

Step-by-step explanation:I don't say you have to mark my ans as brainliest but my friend if it has helped you don't forget to tjank me...

\((\sqrt{6} + \sqrt{3})(\sqrt{6} - \sqrt{3}) = 6 -\sqrt{3} \sqrt{6} + \sqrt{3} \sqrt{6} - 3 = 6 - 3 = 3\)

the answer were to the question is 7.29

Answer:

y=1/5=0.5

Step-by-step explanation:

Answer:

Each person will get .6 of a pound

Step-by-step explanation:

If you divide 3 by 5 you get .6.

Answer: x+5 with a remainder of 3 (can also be said as 3/x-4)

Step-by-step explanation: See attachment

Answer:

Cost of Hats = $15

Cost of Scarves = $8

Step-by-step explanation:

Let

Cost of Hats = x

Cost of Scarves = y

5x + 3y = 99 (1)

3x + 5y = 85 (2)

Multiply (1) by 5 and (2) by 3

25x + 15y = 495

9x + 15y = 255

Subtract

25x - 9x = 495 - 255

16x = 240

Divide both sides by 16

x = 240 / 16

= 15

x = $15

Substitute x = 15 into

5x + 3y = 99

5(15) + 3y = 99

75 + 3y = 99

3y = 99 - 75

3y = 24

y = 24/3

= 8

y = 8

Cost of Hats = $15

Cost of Scarves = $8

A. Tis would definitely be the largest

Answer:

Step 1: Calculate the mean of the data—this is \muμmu in the formula.

Step 2: Subtract the mean from each data point. These differences are called deviations. Data points below the mean will have negative deviations, and data points above the mean will have positive deviations.

Step 3: Square each deviation to make it positive.

Step 4: Add the squared deviations together.

Step 5: Divide the sum by the number of data points in the population. The result is called the variance.

Step 6: Take the square root of the variance to get the standard deviation

Answer:

8=73 degrees

5=107 degrees

Step-by-step explanation:

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Answer:

Angle 5 is 107 degrees

Angle 8 is 7s degrees

Step-by-step explanation:

First find angle 5. Since the lines are parallel and cut by a transversal, we can say that Angle 3 and Angle 5 are congruent (same measure) since they are alternate interior angles.

Since Angle 3 is 107 degrees, Angle 5 would also be 107 degrees.

Angle 8 is supplementary to Angle 5.

Angle 5 + Angle 8 = 180

Since we know Angle 5 is 107: 107 + Angle 8 = 180

Angle 8 would then be 73 degrees.

Answer:

Probably the first one because the other two questions would be un-reliable

Step-by-step explanation:

The length of the actual statue in feet would be = 64.96 ft

A scale model is defined as the the exact type of an object but with a different measurement.

The scale model of a statue = 1 In = 11.2 ft

The length of the model = 5.8 inches

Therefore it length in feet = X ft

That is; 1 in = 11.2 ft

5.8 in = X ft

make X ft the subject of formula;

X ft = 5.8 × 11.2 = 64.96 ft

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Hugh poured 100 kilograms of water into 10 kg of salt. He made 110 kilograms of 9.09 % salt solution.

To find the mass of the solution add the mass of salt and the mass of the solution. To find the concentration of the solution divide the salt mass by the total mass of the solution and multiply by 100.

Here we have  

Hugh poured 100 kilograms of water into 10 kg of salt.

After adding 100 kilograms of water to 10 kg of salt.  

The total mass of the solution = 100 + 10 = 110 kg

The concentration of salt

= [ Mass of salt/ Mass of solution] × 100

= [ 10/110] × 100 = 9.09%      

Therefore,

Hugh poured 100 kilograms of water into 10 kg of salt. He made 110 kilograms of 9.09 % salt solution.  

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1. Verticutting - Removes soil about 4 inches deep and makes a mess 2. Aeration - Makes holes in soil without removing soil 3. Topdressing - Used mostly for renovation rather than routine maintenance 4. Leveling - Can be used to fill in holes and provide a smoother surface 5. Reel mowing - Trues turf surface by removing grain.

1. Verticutting is a cultural practice that involves removing soil about 4 inches deep and creates a messy appearance. It is commonly used to control thatch buildup and promote healthy turf growth.

2. Aeration is a technique that creates holes in the soil without removing the soil itself. It helps alleviate soil compaction, improve air and water movement, and enhance root development.

3. Topdressing is primarily utilized for renovation purposes rather than routine maintenance. It involves applying a thin layer of sand, soil, or organic material to the turf surface, which helps improve soil composition, level uneven areas, and enhance turf health.

4. Leveling is a process that can be employed to fill in holes and provide a smoother surface. It aims to eliminate unevenness and create a more uniform and aesthetically pleasing turf.

5. Reel mowing is a practice that trues the turf surface by removing grain. It involves cutting grass using a reel mower, which delivers a precise and uniform cut, resulting in a smoother appearance and improved playability.

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Answer:

7 is D and 8 is D

Step-by-step explanation:

I'm assuming you were asked for the volume of both of these.

7. The area of the trapezoid is 18 then multiply by the length of 8 to get 144 units cubed.

8. The area of the trapezoid is 28 then multiply by the length of 14 to get 392 units cubed.

Answer:

To expand (x + 4)², we can use the formula for squaring a binomial: (a + b)² = a² + 2ab + b². In this case, a = x and b = 4.

So,

(x + 4)² = x² + 2(x)(4) + 4²

= x² + 8x + 16

Thus, (x+4)² when expanded and simplified gives x² + 8x + 16.

Step-by-step explanation:

Answer:

x²n+ 8x + 16

Step-by-step explanation:

(x + 4)²

= (x + 4)(x + 4)

each term in the second factor is multiplied by each term in the first factor, that is

x(x + 4) + 4(x + 4) ← distribute parenthesis

= x² + 4x + 4x + 16 ← collect like terms

= x² + 8x + 16

ANSWER:

14

EXPLANATION:

Given that a number is multiplied by seven, and the product is increased by two, the result is one hundred.

Let's express this mathematically(equation).

Let the number be represented by X.

A number X is multiplied by seven = 7X

The product is increased by 2 = 7X + 2

The result is 100 = 7X + 2 = 100

We have:

7X + 2 = 100

Solve for X:

Subtract 2 from both sides:

7X + 2 - 2 = 100 - 2

7X = 98

Divide both sides by 7:

Therefore the number is 14

Answer:

60

Step-by-Step Explanation:

(200-125):125*100 =

(200:125-1)*100 =

160-100 = 60

Now we have: What is the percentage increase/decrease from 125 to 200 = 60

Answer:

+63%

Step-by-step explanation:

We need to divide to solve this :)

125/200 = 0.63 x 100 = 63%

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Answer:

42.25π m²

Step-by-step explanation:

Let's solve!

⇒ Take the radius of the lawn to be 'r'

===========================================================

Then, area of the path equals :

⇒ Area of (lawn + path) - Area of lawn

⇒ π (r + 2)² - πr² = 30π

⇒ πr² - πr² + 4πr + 4π = 30π

⇒ 4πr = 26π

⇒ r = 6.5 m

===========================================================

Area of the lawn :

⇒ Area = πr²

⇒ Area = π × (6.5)²

⇒ Area = 42.25π m²

For c = 1, we have f(t,y) =-y = 1. Rearranging this equation yields y = 1, which simplifies to y = et. The isoclines for c = -1, 0, 1 are y = e-t, y = 0, and y = et, respectively.

c = -1: y = e-t

c = 0: y = 0

c = 1: y = et

For c = -1, we have f(t,y) = -y = -1. Rearranging this equation yields y = -1, which simplifies to y = e-t.

For c = 0, we have f(t,y) = -y = 0. Rearranging this equation yields y = 0.

For c = 1, we have f(t,y) =-y = 1. Rearranging this equation yields y = 1, which simplifies to y = et.

The isoclines for c = -1, 0, 1 are y = e-t, y = 0, and y = et, respectively.

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The bias of mu1 is 0, the variance of mu1 is 1/2, and the mean squared error of mu1 is 1/2.

To find the bias, variance, and mean squared error of mu1:

We can use the following formulas:
Bias = E[mu1] - mu
Variance = Var[mu1]
MSE = E[(mu1 - mu)^2]
First, let's find E[mu1]:
E[mu1] = E[(x1 + x2)/2]
Since x1 and x2 are independent, their expected values are equal to mu:
E[x1] = E[x2] = mu
Therefore, E[mu1] = E[(x1 + x2)/2] = (E[x1] + E[x2])/2 = mu.
Next, let's find Var[mu1]:
Var[mu1] = Var[(x1 + x2)/2]
Since x1 and x2 are independent, their variances are both equal to (sigma)^2 = 1:
Var[x1] = Var[x2] = (sigma)^2 = 1
Therefore, Var[mu1] = Var[(x1 + x2)/2] = (1/4)*Var[x1] + (1/4)*Var[x2] = 1/2.
Finally, let's find MSE:
MSE = E[(mu1 - mu)^2]
= E[(x1 + x2)/2 - mu)^2]
= E[((x1 - mu) + (x2 - mu))/2]^2
= E[(x1 - mu)^2 + 2(x1 - mu)(x2 - mu) + (x2 - mu)^2]/4
= (E[(x1 - mu)^2] + E[(x2 - mu)^2] + 2E[(x1 - mu)(x2 - mu)])/4
= (Var[x1] + Var[x2] + 2Cov[x1,x2])/4
Since x1 and x2 are independent, their covariance is 0:
Cov[x1,x2] = E[(x1 - mu)(x2 - mu)]

= E[x1x2 - mu(x1 + x2) + mu^2]

= E[x1]E[x2] - mu(E[x1] + E[x2]) + mu^2
= mu^2 - mu^2 - mu^2 + mu^2 = 0
Therefore, MSE = (Var[x1] + Var[x2])/4 = 1/2.
In summary, the bias of mu1 is 0, the variance of mu1 is 1/2, and the mean squared error of mu1 is 1/2.

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Answer:

The total distance is 129

Step-by-step explanation:

In order to answer this question you will need to find 2 distances and then add them to each other.

Begin at -29.  How far will you have to move to the right 29 in order to get to 0?

Now how far will you have to more to get from 0 to 100?

Draw an open number line to help you.

_____________________________________________________

-29                                           0                                                   100

Your first distance is 29.  Your second distance is 100.

The total distance is 129.

End of semester tests are a way for teachers to assess how well their students have grasped the material taught throughout the semester.

Mathematics is the study of topics such as quantity, structure, space, and change. It involves the exploration of topics such as algebraic operations, geometry, calculus, trigonometry, and more. Mathematics has been around for thousands of years and has been used in many different ways to solve problems in science, engineering, finance, and other areas.

Consumer Mathematics is a course that teaches students about money, banking, and budgeting principles. As such, the end of semester test for this subject will include questions about the various concepts discussed over the course of the semester, such as interest rates, loan payments, and other financial topics.
The students who have taken the End of Semester Test for Consumer Mathematics 12th grade will likely have a variety of skills, based on their experiences with the course. Those students who have been paying attention in class and have kept up with their studies should have a good understanding of the material, and as such can answer the questions on the test accurately. Those students who have studied and taken notes diligently should have a good grasp of the concepts and can answer the questions correctly.

For those students who have not studied or paid attention in class, they may struggle with the questions on the End of Semester Test for Consumer Mathematics 12th grade. However, some of the questions may be familiar to them, and they may be able to answer them correctly. Alternatively, if they are familiar with the material, they may be able to use their knowledge to help them answer the questions correctly.

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Given that there are 5 red 4 green and 3 blue balls

The probability of picking a blue and a red ball with replacement is

The probability of picking a blue ball

= 3/(5 + 4 + 3)

= 3/12

The probability of picking a red ball (after replacing the blue picked earlier)

= 5/(5 + 4 + 3)

= 5/12

Hence the probability of picking a blue and a red ball with replacement is

= 3/12 * 5/12

= 15/144

= 5/48

Step-by-step explanation:

A and b but the answer is a because they didn't let me try 1 answer

Answer:

$1.60

Step-by-step explanation:

jdhhrhehehhehehthhrhhrhrhhhhjjjjhjjjjjjjjjjjjjjjjjjjjjjjjjjjh

Answer:

Youe answer is (1,1,0)

Step-by-step explanation:

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