Which values of x satisfy the inequality 0.5x - 0.75 _> 3.25?
a x_>5
b x_<5
c ×_<8
d ×_>8​

The value of variance in the above formula: σ(X) = √(b-a) / √12. This is our standard deviation (σ(X)).

The probability density function, over the given interval, can be found using the formula below:  

f(x) = 1 / (b - a) over [a, b]

Let's start with finding the expected value (E(X)).

Formula for E(X):

E(X) = ∫xf(x)dx over [a, b]

We can substitute f(x) with the formula we obtained in the question.  

E(X) = ∫x(1/(b-a))dx over [a, b]

Next, we can solve the above integral.

E(X) = [x²/2(b-a)] between limits a and b, which simplifies to:

E(X) = [b² - a²] / 2(b-a)  = (b+a)/2

This is our expected value (E(X)).

Next, we will find the expected value (E(X²)).

Formula for E(X²):E(X²) = ∫x²f(x)dx over [a, b]

Substituting f(x) in the above formula: E(X²) = ∫x²(1/(b-a))dx over [a, b]

Solving the above integral, we get:

E(X²) = [x³/3(b-a)] between limits a and b

E(X²) = [b³ - a³] / 3(b-a)  

= (b² + ab + a²) / 3

This is our expected value (E(X²)).

Now we can find the variance and standard deviation.

Variance: Var(X) = E(X²) - [E(X)]²

Substituting the values we have found:

Var(X) = (b² + ab + a²) / 3 - [(b+a)/2]²

Var(X) = (b² + ab + a²) / 3 - (b² + 2ab + a²) / 4

Var(X) = [(b-a)²]/12

This is our variance (Var(X)).

Standard deviation: σ(X) = √Var(X)

Substituting the value of variance in the above formula:

σ(X) = √(b-a) / √12

This is our standard deviation (σ(X)).

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20 centimeters is approximately equal to 7.87402 inches.

This is because inches and centimeters are both units of length, but they are based on different systems of measurement.

Here we have to convert from metric units of distance to standard units of distance

The inch is a unit of length commonly used in the United States and the United Kingdom, and is defined as exactly 2.54 centimeters. Therefore, to convert centimeters to inches, you need to divide the number of centimeters by 2.54.

The conversion factor = 2.54

The length in inches = Length in centimeter / Conversion factor

= 20 / 2.54

= 7.87402 inches.

Therefore, 20 centimeter is 7.87402 inches.

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The number of bacteria in 25g sample is 1.225*10^8

Data;

To find the number of bacteria in 25g, we just need to multiply the number of bacteria in 1g by 25. This implies that the bacteria increase in a multitude of 25.

\(1g = 4.9*10^6\\25g = x\)

Let's cross multiply both sides and solve for x

\(1g =4.9*10^6\\25g = x\\x = 25 * 4.9*10^6\\x = 122,500,000\\\\x = 1.225*10^8\)

The number of bacteria in 25g sample is 1.225*10^8

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The Sine or Sinθ in a right-angle triangle is the ratio of its perpendicular to its Hypotenuse. The length of the wire is 81.5 meters.

The Sine or Sinθ in a right-angle triangle is the ratio of its perpendicular to its Hypotenuse. it is given as,

Sin(θ) = Perpendicular/Hypotenuse

where,

θ is the angle,

Perpendicular is the side of the triangle opposite to the angle θ,

The hypotenuse is the longest side of the triangle.

The length of the tower is 80 meters, while the angle of elevation is 79°. Therefore, the length of the wire will be the hypotenuse of the triangle. Therefore, the length of the wire is,

Sin(θ) = Perpendicular/Hypotenuse

Sin(79°) = 80 meter/Length of the wire

Length of the wire = 81.4973 ≈ 81.5 meters

Hence, the length of the wire is 81.5 meters.

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Answer:

Move the point on the diagonal to (1,4) then move the vertex 4 units left and 3 units upwards

Step-by-step explanation:

The data value that corresponds to the 46th percentile is 10.

To find the data value that corresponds to the 46th percentile, we need to arrange the given data in ascending order and then identify the value at the desired percentile.

Arranging the data in ascending order:

7, 12, 14, 16, 19, 19, 19, 25, 25, 27, 28, 28, 34, 37, 38, 40, 53, 69, 92, 115, 200

Since we have 21 data values, the 46th percentile corresponds to the (46/100) * 21 = 9.66th value.

To find the corresponding data value, we round up the decimal value to the nearest whole number, which is 10.

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Two variables are said to be positively associated when both the variables increase simultaneously. Two variables are said to be negatively associated when with the increase in one variable, the other decreases.

When we say that two variables are positively associated, it means that as one variable increases, the other variable also tends to increase. In other words, there is a direct variation between the two variables. For example, if we look at the relationship between height and weight, we would expect to see a positive association because taller people generally weigh more than shorter people.

On the other hand, when we say that two variables are negatively associated, it means that as one variable increases, the other variable tends to decrease. In other words, there is a inverse variation between the two variables. For example, if we look at the mathematical variation between studying and test scores, we would expect to see a negative association because the more someone studies, the lower their test anxiety and the better they are likely to perform on the test.

Understanding whether two variables are positively or negatively associated is important in many areas, including social sciences, healthcare, and business. By identifying these associations, we can better predict outcomes and make informed decisions based on data.

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The fallacy of ad hominem is committed, attacking Erica's credibility and motives rather than addressing the actual content of her arguments.

Therefore, this argument is fallacious.

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Answer:

a and e

Step-by-step explanation:

Distance is a scalar quantity; so, it is always positive

Given that:

\(n_1 =-31\)

\(n_2 = -6\)

The distance between the points is calculated using the following absolute equation.

\(d = |n_1 -n_2|\)

\(d = |-31 -(-6)|\)

\(d = |-31 +6|\)

\(d = |-25|\)

Remove absolute brackets

\(d = 25\)

Hence, the distance is 25 units and the correct expression is: \(|-31 -(-6)|\)

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Answer:

To calculate the total charge within the cylinder with dimensions r=1.5 and h=3, we use the potential function V = 5r + 4 cos Ø in cylindrical coordinates.

The total charge can be obtained by integrating the charge density over the volume of the cylinder.

The potential V within the cylinder is given by V = 5r + 4 cos Ø, where r represents the radial distance from the axis of the cylinder and Ø represents the angle in the cylindrical coordinate system. To calculate the total charge within the cylinder, we need to integrate the charge density over its volume.

The charge density ρ can be related to the potential by ρ = -∇²V, where ∇² is the Laplacian operator. In cylindrical coordinates, the Laplacian operator takes the form:

∇² = (1/r) ∂/∂r (r ∂/∂r) + (1/r²) ∂²/∂ز + ∂²/∂z²

Since the potential function V does not depend on the z coordinate, the Laplacian reduces to:

∇² = (1/r) ∂/∂r (r ∂/∂r) + (1/r²) ∂²/∂ز

Applying this operator to the potential function V, we find:

∇²V = (1/r) ∂/∂r (r ∂V/∂r) + (1/r²) ∂²V/∂ز

To find the charge density, we substitute this expression into ρ = -∇²V:

ρ = -(1/r) ∂/∂r (r ∂V/∂r) - (1/r²) ∂²V/∂ز

To calculate the total charge, we integrate the charge density ρ over the volume of the cylinder:

Q = ∫∫∫ ρ dV = ∫∫∫ -(1/r) ∂/∂r (r ∂V/∂r) - (1/r²) ∂²V/∂ز dV

The integration is performed over the cylindrical coordinates r, Ø, and z, with appropriate limits. Evaluating this integral will give us the total charge within the cylinder.

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Answer: 6 gallons

Step-by-step explanation:

4/30  * 45  = 6

A Cartesian coordinate system is a coordinate system that employs a pair of perpendicular number lines, one horizontal axis and the other vertical axis.

Each point in the plane is defined by an ordered pair of numbers known as its coordinates. plot an athlete running from point A (3,0) to point B (0,5) then to point C (-4,-2) and ending at point D (3, -1) and clear marking of your coordinate system and plotting your athlete’s movement, using vector arrows depicting direction.

Step 1: Determine the maximum and minimum values on the x-axis and y-axis. Choose suitable values for both axes.
Step 2: Draw a horizontal x-axis and a vertical y-axis intersecting at the origin (0, 0). Ensure that the length of the axes is sufficient to accommodate the points.
Step 3: On the x-axis, mark the point A (3,0) which is located 3 units from the origin towards the right. Label the point A.
Step 4: On the y-axis, mark the point B (0,5) which is located 5 units from the origin towards the top. Label the point B.
Step 5: On the x-axis, mark the point C (-4,-2) which is located 4 units from the origin towards the left. Label the point C.
Step 6: On the y-axis, mark the point D (3,-1) which is located 1 unit from the origin towards the bottom. Label the pointD.
Step 7: Join the points A, B, C, and D to form a quadrilateral.
Step 8: Draw vectors (vector arrows) that depict the movement of the athlete in the order from A to B, from B to C, and from C to D. Repeat this for all the movements of the athlete from A to B, from B to C, and from C to D.

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The DES (Data Encryption Standard) is a symmetric-key block cipher that operates on 64-bit blocks of data.

In the initial step of the encryption process, the plaintext block is passed through an initial permutation (IP) before being divided into two 32-bit halves, referred to as L0 and R0. These two halves then undergo a series of 16 rounds of transformations before being combined and passed through a final permutation (FP) to produce the ciphertext block. During each round, a 48-bit subkey is generated from the 56-bit encryption key, which is then used to perform a substitution and permutation on R.

In the given scenario, the plaintext block and the key bits are all zeros, so L0 and R0 will both be zero. During the first round of transformations, R0 will be passed through an expansion permutation that expands it to 48 bits, and then XORed with the first 48 bits of the encryption key. Since both R0 and the key bits are zero, this XOR operation will result in a 48-bit output of all zeros.

This zero output is then passed through the S-boxes, which will also produce all zeros as output since their inputs are all zeros. The output of the S-boxes is then passed through a permutation, which again produces all zeros. Therefore, the output of the first round of transformations, denoted as L1R1, will be all zeros. The number of nonzero bits in L1R1 is thus zero, and the answer is not given as an option.

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Answer:

Step-by-step explanation:

a₂ = 9

a₃ = a₂-1.5

a₄ = a₃-1.5

a₅ = a₄-1.5

etc.

The terms have a common difference of -1.5, so the sequence is arithmetic.

Answer:

Step-by-step explanation:

The common difference is a y-thing. It looks like the difference in the y-values of each of these points is -1.5. That means that this is an arithmetic sequence because the common difference is consistently -1.5. In fact, the whole equation can be determined to be

\(a_n=-1.5n+12\)

Answer:

4 but do step by step

Step-by-step explanation:

The missing values of the given triangle DEF would be listed below as follows:

<D = 40°

<E = 90°

line EF = 50.6

To determine the missing part of the triangle, the Pythagorean formula should be used and it's giving below as follows:

C² = a²+b²

where;

c = 80

a = 62

b = EF = ?

That is;

80² = 62²+b²

b² = 80²-62²

= 6400-3844

= 2556

b = √2556

= 50.6

Since <E= 90°

<D = 180-90+50

= 180-140

= 40°

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The domain of the function \(f(x) = \sqrt{\frac{1}{3}x + 2\) is (d) x  ≥ -6

From the question, we have the following parameters that can be used in our computation:

\(f(x) = \sqrt{\frac{1}{3}x + 2\)

Set the radicand greater than or equal to 0

So, we have

1/3x + 2 ≥ 0

Next, we have

1/3x  ≥ -2

So, we have

x  ≥ -6

Hence, the domain of the function is (d) x  ≥ -6

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Answer:

(x,y) ——-> ( - x ,  y )

Step-by-step explanation:

When reflected across the y-axis, the sign of the x will change. So, the answer to this is (x,y) ——-> ( - x ,  y )

To find the critical value for a two-tail test with a sample standard deviation, an n-value of 36, and an alpha of 0.05, you will need to use the t-distribution table (as the population standard deviation is not given). However, since you have only provided the sample standard deviation and not its actual value, I cannot calculate the specific critical value for you.

Here are the general steps to find the critical value:
1. Calculate the degrees of freedom: df = n - 1 = 36 - 1 = 35
2. Divide the alpha (0.05) by 2 for a two-tail test, resulting in 0.025 in each tail.
3. Look up the t-value corresponding to the degrees of freedom (35) and the given alpha level (0.025) in the t-distribution table.
4. The t-value you find in the table is your critical value.

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Answer:

<B = 68.2

Step-by-step explanation:

use inverse trig to solve this problem.

you have an opposite and adjacent side for <B, so you will use tangent.

type this into your calculator: tan-1(5/2)

68.19859051

round to the nearest tenth

Hope This Helps!!

Answer:

AB^2=AC^2+CB^2

= 5^2+ 2^2

= 25+ 4

= 29

=5.38

9514 1404 393

Answer:

  5 seconds

Step-by-step explanation:

Suppose the front parts of the trains meet at point A. Since both are the same length and traveling the same speed, each will pass point A in time ...

  time = distance/speed

  time = (1/18 mi)/(40 mi/h) = (1/720 h) × (3600 s)/(1 h) = 5 s

That is, the rear part of each train will be at point A 5 seconds after the front part.

The rear parts will pass each other 5 seconds after the front parts meet.

A consumer loan of $40,000 with a 15.8% interest rate will require monthly payments over a period of 2 years. The total amount to be paid, including both principal and interest, will be approximately $45,380.

To calculate the monthly payments, we need to determine the total amount to be paid over the loan period, including the principal amount and the interest. The formula used for calculating equal monthly installments is:

M = P * (r * (1 + r)^n) / ((1 + r)^n - 1)

Where:

M = Monthly payment

P = Principal amount

r = Monthly interest rate

n = Number of monthly payments

In this case, the principal amount (P) is $40,000, the interest rate (r) is 15.8% per year, and the loan duration (n) is 2 years (24 months).

First, we convert the annual interest rate to a monthly rate by dividing it by 12: 15.8% / 12 = 0.0132.

Next, we substitute the values into the formula:

M = 40,000 * (0.0132 * (1 + 0.0132)^24) / ((1 + 0.0132)^24 - 1)

Calculating this formula gives us the monthly payment (M) of approximately $1,907.42.

To find the total amount to be paid, we multiply the monthly payment by the number of payments: $1,907.42 * 24 = $45,778.08. However, this includes both the principal and the interest. Subtracting the principal amount ($40,000) gives us the total interest paid: $45,778.08 - $40,000 = $5,778.08.

Therefore, the total amount to be paid, including both principal and interest, will be approximately $45,778.08.

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Answer: C

Step-by-step explanation: basicly all u have to do juss multilpy how many on top with the extra boxes, hope this helpss :)

Answer:

A. 5/9

explanation:

The answer is A.

Multiply the fractions.

You can use a calculator online for that. I did and it said 5/9.

When multiplied you get 10/18 and then simplify its 5/9

Answer:

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relation between the cosine of an angle and the sides of the triangle.

  Cos = Adjacent/Hypotenuse

__

In the given triangle, the hypotenuse is AC. The side adjacent to angle A is AB, so its cosine is ...

  cos(A) = AB/AC

  cos(A) = 3/5

__

The right angle in the triangle is angle B. The cosine of a right angle is 0.

  cos(B) = 0

__

The side adjacent to angle C is CB, so its cosine is ...

  cos(C) = CB/AC

  cos(C) = 4/5

Answer:

cos <ABC=0

cos <BAC=3/5

cos<ACB=4/5

GIVE 5 STARS IF YOU DO RSM!!!

Answer:

D, The ordered pair (-4, 0) is a solution to the system because it makes both equations true.

If the equetion is 2x + y = -8 and x - y = -4

Answer: C (3W -8)

Step-by-step explanation:

Answer:

rational integer and whole

Answer:

D. Rational, integer, and whole.

Step-by-step explanation:

0 can be written in a ton of fraction forms (like \(\frac{0}{2645648}\)), so it is rational.

Whole numbers include 0 and the natural numbers, but natural numbers alone, don't include 0.

Integers are the whole numbers and they negative opposites.