PLEASE HELP ASAPPPP!!!

the expression 3^2(2+7)×[3(2+1)]^2 can be written in the form of 9r. what is r?

Answer:

4.5 is the value of A

Step-by-step explanation:

do it doing part/whole and cross crossing :)

32/100 because it’s a percentage and 1.12/x. 1.12 times 100 to get 112, and then 32 times x = 32x. your equation right now is 32x = 112, bur we want to get rid of that x, so we are going to divide 112/32 to get the whole of 3.5 for the value of A.

The value of cos B in proper fraction is 12 / 35.

The value of cos B is determined by applying the principles of congruent angles and similar triangles as shown below.

Congruent angles are angles that have the same measure in degrees or radians. In other words, if two angles have the same size and shape, they are congruent. This means that their corresponding sides and vertices are in the same position, and they can be superimposed on each other by a rotation, translation or reflection without changing their size or shape.

angle B is congruent to angle A;

cos A = 24 / 70

So the value of cos B is calculated as;

cos B ≅ cos A = 24 / 70

cos B = 12 / 35

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Answer:

33.8

Step-by-step explanation:

33.8 is the closest to half of 65.

9514 1404 393

Answer:

  125

Step-by-step explanation:

The proportion you want is ...

  \(\dfrac{\text{part}}{\text{whole}}=\dfrac{65}{\text{?}}=\dfrac{52}{100}\\\\6500=52\cdot\text{?}\qquad\text{cross multiply}\\\\\dfrac{6500}{52}=125=\text{?}\qquad\text{divide by 52}\)

52% of 125 is 65.

__

Comment on the formulation

You can write the same proportion 4 ways. I find it convenient to choose one that has the unknown in the numerator. Here, that means you would write it ...

  whole/part = 100/52 = ?/65

Then the solution is one step: multiply by 65.

The minimum amount of paint needed for two coats will be 297 square centimeters.

The shape is a combination of the rectangle and the triangle. Then the area of the shape is calculated as,

A = 1/2 x 18 x 9 + 18 x 12

A = 81 + 216

A = 297 square centimeters

Hence, the minimum amount of paint needed for two coats will be 297 square centimeters.

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The point estimate for the mean mpg of hybrid cars is 33 mpg.

A Confidence interval has two bounds, a lower bound and an upper bound.

A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the bounds.

In the given problem, we have that:

Lower bound = 29

Upper bound = 37

Now, the point estimate will be:

(29+37)/2 = 33

Therefore, the point estimate for the mean mpg of hybrid cars is 33 mpg.

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The length of BC in this problem is given as follows:

BC = 3.6.

Two triangles are defined as similar triangles when they share these two features listed as follows:

The similar triangles for this problem are given as follows:

ABC and ADE.

Hence the proportional relationship for the side lengths is given as follows:

3/5 = BC/6.

Applying cross multiplication, the length BC is given as follows:

BC = 6 x 3/5

BC = 3.6.

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Answer: 7.5

Step-by-step explanation: 2 x 7.5 = 15

Answer:

B

Step-by-step explanation:

9 plus 10 equals 21 because george washington was the first president of the United states and because Donald Trump lost the 2020 election

Answer:

landing on a 4 would be 1/3 chance

and

landing on a number less than 4 would be 2/3 chance

Step-by-step explanation:

The probability of landing on a 4 is 1/3 and then landing on a number less than 4 is 2/3.

Probability is the chance of happening an event or incident.

The probability of landing on a 4 is 1/3.

Then, the probability on landing on a number less than 4 = 2/3.

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Answer:

The answer for A is 2.5/1 and B is wrong. The answer would be $2.50 for 1 pound of beets.

Step-by-step explanation:

Just have to figure out slope, then you get B

Answer:

The slope is 5/2

m=y²-y¹/x²-x¹

m=10-5/4-2

m=5/2

The sampling method of (a) is systematic sampling, and (b) is cluster sampling.

It is an advanced form of simple random sampling. In this form, from the population of members, sample members are selected randomly. In this random selection, a starting point is fixed. The sample is created when the members are selected from the fixed intervals.

a. The sampling method described is systematic sampling, where every 45th customer that purchases a movie ticket is selected for the survey.

b. The sampling method described is cluster sampling, where the theater is divided into sections (clusters) and one cluster is randomly selected for the survey. Then, every customer within that cluster is polled.

Therefore, the sampling method of (a) is systematic sampling, and (b) is cluster sampling.

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Answer:

21,35

Step-by-step explanation:

In statistics, the "central tendency" refers to a single value which represents middle or center of a set of data. The 3 common measures of central tendency are named as mean, median, and mode.

When scores have a central tendency, it means that most of the scores in a set of data are clustered around a particular value.

For Example, if we have a data set of test scores, and most of the scores are around 70, then 70 would be the central tendency of the data set.

The central tendency is an important concept in statistics because it provides a way to summarize a large set of data with a single value.

It can help you understand the overall pattern of the data and make comparisons between different data sets.

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To the nearest year, $5,000 invested at 5% per year, compounded daily, will be worth $10,000 in approximately 14 years.

To determine the time it takes for the investment to double, we can use the compound interest formula: A = P(1 + r/n)^(n*t), where A is the future value, P is the principal amount, r is the annual interest rate, n is the number of times interest is compounded per year, and t is the number of years.

In this case, the principal amount (P) is $5,000, the annual interest rate (r) is 5% (or 0.05), and the investment is compounded daily, so the number of times interest is compounded per year (n) is 365. We want to find the number of years (t) it takes for the investment to reach $10,000.

Setting up the equation: 10,000 = 5,000(1 + 0.05/365)^(365*t), we can solve for t using logarithms or trial and error. The result is approximately 14 years. Therefore, it will take approximately 14 years for the $5,000 investment to grow to $10,000 at a 5% annual interest rate, compounded daily.

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The ordered pair that represents "649-11-02-00-00 files/" is (649, 11, 2, 0, 0) and the magnitude of the ordered pair (649, 11, 2, 0, 0) is approximately 649.4.

For the magnitude of the ordered pair (649, 11, 2, 0, 0), we can calculate the Euclidean norm, which is the square root of the sum of the squares of each component.

Magnitude = \(\sqrt\)(649^2 + 11^2 + 2^2 + 0^2 + 0^2)

              =\(\sqrt\\\) (421201 + 121 + 4)

              = \(\sqrt\)(421326)

              ≈ 649.43

So, the magnitude of the ordered pair (649, 11, 2, 0, 0) is approximately 649.43.

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The free time of rollin's will be 16 hours.

To find how much time Rollin spent on planned activities, we would need to have a list of all the planned activities and the duration of each activity. Then, we would add up the duration of all the activities to get the total time spent on planned activities.

we will add the time he spent playing, reading, having meals, and watching TV, which is 2 + 2 + 1 + 3 = 8 hours.

To find how much free time Rollin had, we would need to know the total amount of time available and subtract the time spent on planned activities from the total amount of time.

Therefore, we need to know the duration of each day (24 hours) and the duration of all planned activities. The free time can be calculated as

Free time = Total time available - Time spent on planned activities

So, Rollin's free time will be 24 - 8 = 16 hours.

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--The given question is incomplete, the complete question is given

"Describe the quantities an operations you use to find how much time Rollin split on the planned activities which quantities and operations will you use to find how much free time Rollin had. activites are playing, reading, meals, watching tv with time of 2hrs, 2 hrs, 1 hr, 3 hrs. "--

To find the equation of a perpendicular line, you first need to find the negative reciprocal of the slope given. The slope is -1/3, so the slope of the perpendicular line will be 3

Now we just need to find the y intercept using the point (3, 2) and you can plug the coordinates in and then solve for b. Let's see what that looks like.

y=3x+b

2=3*(3)+b

2=9+b

-7=b  So now we know the y-intercept and slope. We just put them together now

y=3x-7

System state space model is: y = [1  0] x. y = 4 is an equilibrium point.  x(t) = P∧(Dt)P−1 x(0) is the state transition matrix. The system is stable. The transfer function of the system is U(s)X(s) = [(s-2)²+ 4]⁻¹ [(s-2)  -2; 2  (s-2)] [0 2].

(a) i) System state space model:

x = [y  y']T;

dx/dt = [0  2; -1  1]x + [0  2]T u;

y = [1  0] x

Here, x represents the state vector.

ii) The equilibrium point(s) of the system if u is a constant value equal to 4: dy/dt = 0

Thus, 2y = 8 or y = 4. Therefore, y = 4 is an equilibrium point.

(b) The state transition matrix for autonomous linear systems is derived as follows:

If A is diagonalizable, then there exist an invertible matrix P and diagonal matrix D such that A = PDP−1.

Thus, x(t) = P∧(Dt)P−1 x(0) is the solution where exp(Dt) is calculated from the diagonal entries of D and t is the time of propagation.

(c) i)The stability of the system is determined by the eigenvalues of the system matrix A. If all the eigenvalues have a negative real part, the system is stable. If one of the eigenvalues has a positive real part, the system is unstable. And, if one eigenvalue has a zero real part, the system is marginally stable. Since the system has two eigenvalues with negative real parts, it is stable.

ii) The transfer function of the system is given as follows:

U(s) → X(s): X(s) = (sI − A)−1 B U(s)Y(s) → X(s): Y(s) = CX(s) = C(sI − A)−1 B U(s)

Thus, substituting the values of A, B, and C we get,Y(s) = [1 -1] [(s-2)²+ 4]⁻¹ [(s-2)  -2; 2  (s-2)] [0 2]

U(s)X(s) = [(s-2)²+ 4]⁻¹ [(s-2)  -2; 2  (s-2)] [0 2]

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By using factoring by grouping or synthetic division, we find that \(x = -2\) is a real solution.

Checking for Rational Roots

Using the rational root theorem, the possible rational roots of the polynomial are given by the factors of the constant term (24) divided by the factors of the leading coefficient (-4).

The possible rational roots are ±1, ±2, ±3, ±4, ±6, ±8, ±12, ±24.

By substituting these values into \(f(x)\), we find that \(f(-2) = 0\). Hence, \(x + 2\) is a factor of \(f(x)\).

Dividing \(f(x)\) by \(x + 2\) using long division or synthetic division, we get:

Now, we have reduced the problem to factoring \(-4x³ + 18x² - 16x + 12\).

Attempt 2: Factoring by Grouping

Rearranging the terms, we have:

Factoring out common factors, we obtain:

Now, we have \(2x^2(-2x + 9) + 4(4x - 3)\). We can further factor this as:

Therefore, the fully factored form of \(f(x) = -4x⁴  + 26x³  - 50x² + 16x + 24\) is \(f(x) = (x + 2)(2x² + 4)(-2x + 9)\).

Solutions to the polynomial equations:

Using polynomial division or synthetic division, we can find the quadratic equation \((x + 2)(x² + 2x - 3)\). Factoring the quadratic equation, we get \(x² + 2x - 3 = (x +

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Answer:

a.

inverse

of

(0,1)=(1,0)

(1,0)=(0,1)

(2,-1)=(-1,2)

(3,0)=(0,3)

(4,1)=(1,4)

Step-by-step explanation:

b.

yes the function are inverse

as

(-1,2)=(2,-1)

(0,1)=(1,0)

Take any one point .

For inverse

(x,y) should be (y,-x)

Apply

Yes the functions are inverses of each other

Answer:

sorry error bessssssssss

Answer:

A

Step-by-step explanation:

The value of the between groups mean square that would be reported in the ANOVA test is 7.553 and the value of the within groups mean square that would be reported in the ANOVA test is 466.187.

In ANOVA, the "between groups" mean square is calculated by dividing the sum of squares between groups by the degrees of freedom between groups. The "within groups" mean square is calculated by dividing the sum of squares within groups by the degrees of freedom within groups.

These values help to determine whether there is a significant difference in means between the groups. In this case, the between groups mean square is relatively small compared to the within groups mean square, indicating that there is not a significant difference in mean daily sales among the three locations.

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The surface area of the rectangular pyramid is approximately 567.9 in².

What is rectangular pyramid?

A rectangular pyramid is a type of pyramid that has a rectangular base and four triangular faces that meet at a common vertex. The rectangular base of a rectangular pyramid can be any rectangle, meaning that the length and width can be different. The four triangular faces of a rectangular pyramid are congruent, which means they are the same size and shape. The height of the rectangular pyramid is the distance between the vertex and the center of the base. The surface area of a rectangular pyramid can be calculated by finding the area of each face and adding them together.

To find the surface area of the rectangular pyramid, we need to find the area of each face and add them together.

First, let's find the area of the rectangular base:

Area of base = length x width = 13 in x 17 in = 221 in²

Next, let's find the area of the larger triangular faces:

Area of each larger triangular face = (1/2) x base x height = (1/2) x 17 in x 11 in = 93.5 in²

Total area of both larger triangular faces = 2 x 93.5 in² = 187 in²

Finally, let's find the area of the smaller triangular face:

Area of smaller triangular face = (1/2) x base x height = (1/2) x 13 in x 12.3 in = 79.95 in²

Now, we can find the total surface area of the rectangular pyramid by adding the areas of all the faces:

Total surface area = area of base + area of both larger triangular faces + area of smaller triangular face

Total surface area = 221 in² + 187 in² + 79.95 in²

Total surface area = 488.95 in²

Therefore, the surface area of the rectangular pyramid is approximately 567.9 in².

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The rate of change of an edge of the cube is approximately 0.048 m/min when the volume is exactly 27 cubic meters.

To find the rate of change of an edge of the cube, given that the volume decreases at a rate of 4 cubic meters per minute when the volume is exactly 27 cubic meters, follow the solution below:Let the length of the edge of the original cube be L.Let the volume of the original cube be V, such that V = L³.The rate of change of volume is given as -4 m³/min; the negative sign is used to indicate a decrease in volume, and this is obtained when the derivative of the volume with respect to time is multiplied by the negative sign.Let V₀ be the original volume of the cube, and V₁ be the volume after t minutes. Thus, V₁ = V₀ - 4t m³. We are told that V₁ = 27 m³, hence:V₀ - 4t = 27 ⇒ V₀ = 27 + 4t m³Substituting V₀ in terms of t into the expression V = L³, we have:L³ = 27 + 4tTaking the derivative of both sides with respect to t, we have:3L²(dL/dt) = 4 ⇒ dL/dt = 4/(3L²)Substituting L from the expression L³ = 27 + 4t, we have:L = (27 + 4t)^(1/3)Therefore, the rate of change of an edge of the cube is given by the derivative of L with respect to t:dL/dt = 4/(3L²) = 4/(3(27 + 4t)^2/3) ≈ 0.048 m/min (to 3 decimal places)Answer: The rate of change of an edge of the cube is approximately 0.048 m/min when the volume is exactly 27 cubic meters.

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Answer:

second table

Step-by-step explanation:

For a proportional relationship, the constant of proportionality k is

k = \(\frac{y}{x}\)

Choose an ordered pair from each table and evaluate for k

Table 1

using (8, 1 ), then

k = \(\frac{1}{8}\) = 0.125 ≠ 0.8

Table 2

using (10, 8 ), then

k = \(\frac{8}{10}\) = 0.8

Table 3

using (8, 0.8 ), then

k = \(\frac{0.8}{8}\) = 0.1 ≠ 0.8

Table 4

using (10, 20.8 ), then

k = \(\frac{20.8}{10}\) = 2.08 ≠ 0.8

Table 2 has a constant of proportionality k = 0.8

Answer:

The answer you're looking for is 1470.

Step-by-step explanation:

The method I used was PEMDAS

Since there was no parenthesis, I simplified the exponents.

2.130 x 10³ - 6.6 x 10² = ?
2.130 x 1000 - 6.6 x 100 = ?

After that, I multiplied all terms next to each other.

2.130 x 1000 - 6.6 x 100 = ?
2130 - 660 = ?

The final step I did was to subtract the two final terms and ended up with 1470 as my final answer.

1470 = ?

I hope this was helpful!

Let r be a partial order on set S, and let t be a subset of S. If a and a' are both elements of t, where a is the greatest element and a' is a maximal element, then it can be proven that a = a'.

To prove that a = a', we consider the definitions of greatest and maximal elements. The greatest element in a set is an element that is greater than or equal to all other elements in that set. A maximal element, on the other hand, is an element that is not smaller than any other element in the set, but there may exist other elements that are incomparable to it.

Given that a is the greatest element in t and a' is a maximal element in t, we can conclude that a' is not smaller than any other element in t. Since a is the greatest element, it is greater than or equal to all elements in t, including a'. Therefore, a is not smaller than a'.

Now, to prove that a' is not greater than a, suppose by contradiction that a' is greater than a. Since a' is not smaller than any other element in t, this would imply that a is smaller than a'. However, since a is the greatest element in t, it cannot be smaller than any other element, including a'. This contradicts our assumption that a' is greater than a.

Hence, we have shown that a is not smaller than a' and a' is not greater than a, which implies that a = a'. Therefore, if a is the greatest element and a' is a maximal element in t, then a = a'.

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The value of the odds of pulling a red marble is equivalent to 1/9 from an urn filled with marbles of various colors.

Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1. Its basic meaning is something is likely to happen. It is the ratio of the favorable event to the total number of events.

By definition, the theoretical probability is equal to the ratio of the favorable event to the total number of events.

Given that:

The probability of pulling a red marble at random is 1/10

Probability of not pulling red marble is = 1-(1/10)= 9/10

The odds of pulling red marble is (1/10)/(9/10)

The probability of odds of pulling red marble is 1/9.

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