PLZZZZZ Find the difference between 74.8 and 35.10
NOOOO Scam

The degrees of freedom for a chi-square test applied to a cross-tabulation with 5 rows and 2 columns is equal to 6

The given parameters are:

Rows = 5

Column = 2

The degrees of freedom is then calculated as:

df = Rows + Column - 1

Substitute the known values in the above equation

df = 5 + 2 - 1

Evaluate the expression

df = 6

Hence, the degrees of freedom for a chi-square test applied to a cross-tabulation with 5 rows and 2 columns is equal to 6

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Answer:

X is equal to 1.2

Step-by-step explanation:

6/5 equals 1.2

i don't have to sound rude but can i have brainliest please i need 4 more :')

Answer:

19.1

Step-by-step explanation:

Therefore, the value of y at t = 0.4 is 5.To find the value of y at t = 0.4, we can use the Euler's method. Here are the steps to solve the given differential equation.

1. Given the differential equation y' + 0.2y = 0, we need to find the value of y at t = 0.4.

2. Start with the initial condition y(0) = 5. This gives us the starting point for our approximation.

3. Let's choose a step size h = 0.2. This means we will approximate the value of y at t = 0.4 using the values of y at t = 0, t = 0.2, and t = 0.4.

4. To approximate y at t = 0.2, we use the formula:
  y(0.2) = y(0) + h * (dy/dt)(0)
         = 5 + 0.2 * [y'(0) + 0.2 * y(0)]

5. Substitute the values into the formula:
  y(0.2) = 5 + 0.2 * [y'(0) + 0.2 * 5]

6. Now, let's find the value of y'(0):
  Given the differential equation, y' + 0.2y = 0, we can rearrange it to find y':
  y' = -0.2y

7. Substitute this value into the formula:
  y(0.2) = 5 + 0.2 * [-0.2 * 5 + 0.2 * 5]

8. Simplify the equation:
  y(0.2) = 5 + 0.2 * [0]
         = 5

9. Now, to find y at t = 0.4, we repeat the process using the values of y at t = 0.2 and t = 0.4:
  y(0.4) = y(0.2) + h * (dy/dt)(0.2)
         = 5 + 0.2 * [y'(0.2) + 0.2 * y(0.2)]

10. Substitute the values into the formula:
   y(0.4) = 5 + 0.2 * [(-0.2 * 5) + 0.2 * 5]

11. Simplify the equation:
   y(0.4) = 5 + 0.2 * [0]
          = 5.

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This is a horizonal line going through y = 4.

Horizontal lines are of the form

Where

a is a number

Slope is rise over run, or, the change in y divided by change in x.

No matter what the change in x is, the change in y is always zero (horizontal line). Thus, the slope is always 0 as well.

1.

The slope of the line is 0

2.

The slope intercept form is:

Since the slope is zero, m = 0 and y intercept (b) is 4, we have:

When you make a plot of ln k versus 1/T, the slope of the line is related to the activation energy of the reaction, according to the Arrhenius equation.

1. The Arrhenius equation is given by: k = A * e^(-Ea/RT), where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature.

2. To obtain a linear relationship, take the natural logarithm of both sides of the equation: ln k = ln A - (Ea/RT).

3. Rearrange the equation to match the format of a linear equation (y = mx + b), where y is the dependent variable (ln k), m is the slope, x is the independent variable (1/T), and b is the y-intercept: ln k = - (Ea/R) * (1/T) + ln A.

4. In this case, the slope (m) of the line is equal to the negative activation energy divided by the gas constant: m = -Ea/R.

So, when you make a plot of ln k versus 1/T, the slope of the line represents the negative activation energy divided by the gas constant (-Ea/R). This linear relationship is useful in determining the activation energy of a reaction by finding the slope from the plot.

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Answer:

27 + 9x

could also be

9x + 27 (I like this better)

Step-by-step explanation:

Distributive Property is a multiplying thing. The 9 on the outside of the parenthesis is being multiplied times the whole parenthesis. So 9 times the 3 AND ALSO 9 times the x.

9(3 + x)

= 9•3 + 9•x

= 27 + 9x this is exactly, just using Distributive Property

27 + 9x

The probability that a household views television more than 6 hours is approximately 0.0668.

Given that the mean daily viewing time of television is μ = hours per household and the standard deviation is σ = hours per household.

We need to use the normal probability distribution to answer the following questions about daily television viewing per household.

The probability of a household viewing television more than 6 hours can be found using the standard normal distribution as follows:

Z = (x - μ)/σ

We need to find P(x > 6)P(x > 6) = P(Z > (6 - μ)/σ) = P(Z > (6 - μ)/σ) = P(Z > (6 - μ)/σ) = P(Z > (6 - μ)/σ)

The mean daily viewing time of television is given as μ = 4.8 hours per household, and the standard deviation is given as σ = 0.8 hours per household.

The standardized value of 6 is:

Z = (6 - 4.8) / 0.8 = 1.5

Thus, we need to find the area under the standard normal curve to the right of 1.5 using the standard normal table or technology.P(Z > 1.5) = 0.0668

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ANSWER:

x-intercept = 5

y-intercept = 2

On substituting x = 0, we'll get y intercept

2(0) + 5y = 10

5y = 10

y= 10/5

y = 2

Similarly, on substituting y= 0 ,we'll get x-intercept

2x+5(0) = 10

2x= 10

x=10/2

x=5

I hope this helps you...

Answer:

Step-by-step explanation:

Y-intercept is on the Y-axis . So, value of x = 0

2*0 + 5y = 10

         5y = 10

           y = 10/5

y = 2

y-intercept = 2

X-intercept is on the X-axis. Value of y= 0

2x + 0 = 10

2x = 10

x =10/2

x = 5

x-intercept = 5

Using linear function concepts, the correct option is given by:

The slope is −0.3. Starting at 3.6, the GPA will decrease by 0.3 for every text sent in class.

A linear function is modeled by:

y = mx + b

In which:

For this problem, the function is:

y = 3.6 - 0.3x.

The function has a initial GPA of 3.6(student who sends 0 texts), then for each text the student sends, the GPA falls by 0.3(slope of -0.3), hence the correct option is:

The slope is −0.3. Starting at 3.6, the GPA will decrease by 0.3 for every text sent in class.

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Answer:

63 people would be able to come

Step-by-step explanation:

now my explanation would be so i took 2500$ divided it by 39 and got 64 and then took that 64 and divided it by 2500$ and got 39 which means you need to take 1 person away so you can have the 70$ cleaning fee so theres your answer.

The extreme values of the function f(x, y) = xy(2y^2 x^4 − y^4) on the circle x^2 + y^2 = 1 are approximately ±0.235

To find the extreme values of the given function f(x, y) = xy(2y^2 x^4 − y^4) on the circle x^2 + y^2 = 1, we can use the method of Lagrange multipliers.

First, we write down the Lagrangian function L(x, y, λ) as follows:

L(x, y, λ) = xy(2y^2 x^4 − y^4) + λ(x^2 + y^2 − 1)

Then, we take the partial derivatives of L with respect to x, y, and λ and set them equal to zero:

∂L/∂x = y(2y^2 x^4 − y^4) + 2λx = 0

∂L/∂y = x(6y^3 x^4 − 4y^3) + 2λy = 0

∂L/∂λ = x^2 + y^2 − 1 = 0

Simplifying the first two equations, we get:

2y^5 x^4 − y^5 + 2λxy = 0

6y^4 x^4 − 4y^4 + 2λxy = 0

Dividing these equations, we obtain:

3x^4 = 2y^2

Substituting this back into the equation x^2 + y^2 = 1, we get:

3x^4 + x^2 = 1

This is a quartic equation in x^2. We can solve it using numerical methods to get the two possible values of x:

x ≈ ±0.681

y ≈ ±0.732

Plugging these values into the equation 3x^4 = 2y^2, we get:

y ≈ ±0.524

Now we can calculate the corresponding values of the function f(x, y) = xy(2y^2 x^4 − y^4):

f(x, y) ≈ ±0.235

Therefore, the extreme values of the function f(x, y) on the circle x^2 + y^2 = 1 are approximately ±0.235, and they are attained at the points (±0.681, ±0.732) and (±0.732, ±0.681).

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The value of x, considering the proportional relationship in this problem, is given as follows:

\(x = 0.77 \times 10^{-46}\)

A proportional relationship is a relationship in which a constant ratio between the output variable and the input variable is present.

The proportional relationship for this problem is given as follows:

1u - \(6.02 \times 10^{23}\)

x u - \(4.65 \times 10^{-23}\)

Applying cross multiplication, the value of x is given as follows:

\(x = \frac{4.65 \times 10^{-23}}{6.02 \times 10^{23}}\)

\(x = 0.77 \times 10^{-46}\)

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a. The flow is physically possible, b. The flow is rotational, c. The velocity potential function is φ(x,y) = x^2y - xt^2 + yt^2, d. The stream function is ψ(x,y) = x^2 - y^2 + 10xyt, e. The flow is not permanent.

a. The flow is physically possible because the velocity field is defined everywhere and is continuous.

b. The flow is rotational because the curl of the velocity field is not zero. The curl of the velocity field is given by:

curl(u,v) = (-2y + 20t, 2x - 20t, 0)

The curl is not zero because the z-component is not zero. This means that the flow has vorticity, which is a measure of how much the fluid is rotating.

c. The velocity potential function is given by:

φ(x,y) = x^2y - xt^2 + yt^2

The velocity potential function is a scalar field that can be used to calculate the velocity field. The velocity field can be calculated using the following formula:

u = -grad(φ)

v = -grad(ψ)

where φ and ψ are the velocity potential functions.

d. The stream function is given by:

ψ(x,y) = x^2 - y^2 + 10xyt

The stream function is a scalar field that can be used to calculate the streamlines of the flow. The streamlines are the curves that are tangent to the velocity field.

e. The flow is not permanent because the velocity field is not time-independent. The velocity field depends on the time variable t. This means that the flow will change over time.

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Answer:

54 hope it helped you out

The maximum value of the function f(x) = 1 + n*sin(x) with an amplitude of 4 = 5.

To find the maximum value of function f(x) = 1 + n*sin(x), we need to consider the amplitude and the function's equation.

The amplitude of a sine function is the distance from the maximum or minimum point to the midline (which is the average value of the function). In this case, the amplitude is given as 4.

Since the function is f(x) = 1 + n*sin(x), the midline is y = 1. To find the maximum value of f, we need to add the amplitude to the midline:

Maximum value of f = midline + amplitude
Maximum value of f = 1 + 4
Maximum value of f = 5

Therefore, we can state that the maximum value of the function f(x) = 1 + n*sin(x) with an amplitude of 4 is 5.

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Answer:

5 over 7, 7 over 9

Step-by-step explanation:

Answer:

5/7 and 7/9

Step-by-step explanation:

News executives estimated that a 0.1 drop in the ratings for the CBS Evening News corresponds to a $5.5 million drop in revenueThe correct expression that represents the estimation as a derivative is:

\($f'(p) = -5.5 \text{million}$\)

This means that the derivative of the revenue function with respect to the ratings points is equal to -5.5 million.

In this context, the negative sign indicates that as the ratings points decrease (p decreases), the revenue earned decreases. The magnitude of -5.5 million indicates the rate of change in revenue for every one-unit decrease in the ratings points.

By using the derivative, we can determine the sensitivity of revenue to changes in ratings points. In this case, for every 0.1 drop in the ratings points, the revenue is estimated to decrease by $5.5 million.

It's important to note that this estimation assumes a linear relationship between the ratings points and revenue. The derivative captures the instantaneous rate of change in revenue with respect to ratings points.

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Answer:

3x+4

PLEASE MARK ME AS BRAINLIEST PLEASEEEEEE

Step-by-step explanation:

The solution set of the example inequality, 2•x + 3 ≤ -3, is the option;

A possible inequality that can be used to get one of the options, (the inequality is not included in the question) is as follows;

Solving the above inequality, we have;

2•x + 3 ≤ -3

2•x ≤ -3 - 3 = -6

2•x ≤ -6

Therefore;

x ≤ -6 ÷ 2 = -3

x ≤ -3

Which gives;

-∞ < x ≤ -3 in interval notation is (-∞, -3]

The solution set of the inequality, 2•x + 3 ≤ -3, is therefore the option;

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The number of total different values of the binomial experiment variable X is given by = 6.

Hence the correct option is (d).

Here the experiment is an example of Binomial experiment.

And the number of trials in this experiment is given by = 5.

So, the value of parameter, n = 5.

So the different values of the binomial distribution variable X can be given by = {0, 1, 2, 3, 4, 5}

So the number of total different values of the binomial distribution variable X is given by = 6.

Hence the correct option will be given by (d).

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Answer:

9

Step-by-step explanation:

3 to the 2nd power would look like this if you typed it out: 3^2. The ^ symbol refers to an exponent.

3^2

= 3 * 3

= 9

:3))

Answer:

the answer would be 9

Step-by-step explanation:

3² would be expressed as a multiplication like this

3x3

you would get 9

So, your answer is 9.

Answer: Your answer would be 2x ⋅ (2x) ⋅ 11

Step-by-step explanation: I hope this helps!

The equation of the tangent plane to z=x**2−y**2 at the point (x,y)=(2,1) is z = 4x - 2y - 5 and to z=3x-2y at (x,y)=(4,3) is z = 3x - 2y + 6.

The partial derivatives of z with respect to x and y must first be found in order to determine the equation of the tangent plane to the surface z=x**2-y**2 at the point (x,y)=(2,1):

Z/Y = -2Y, and Z/X = 2X.

After that, we can use the expression for a plane's point-normal form, which is given by:

z - z0 Equals n · (x - x0, y - y0) (x - x0, y - y0)

where n is the plane's normal vector and (x0, y0, z0) is a location on the plane. We know the normal vector is given by because we want the tangent plane: n = <∂z/∂x, ∂z/∂y, -1>

The normal vector is therefore n = 4, -2, -1> at the location (2,1). Also known is the equation z0 = f(2,1) = 22 - 12 = 3. Consequently, the expression of the tangent plane's solution is:

z - 3 = <4, -2, -1> · (x - 2, y - 1) (x - 2, y - 1)

z - 3 = 4(x - 2) (x - 2) - 2(y - 1) (y - 1) - (x - 2) (x - 2)

z = 4x - 2y - 5

(b) We must first determine the partial derivatives of z with respect to x and y in order to obtain the equation of the tangent plane to the surface z=3x-2y at (x,y)=(4,3):

∂z/∂x = 3 ∂z/∂y = -2

Then, we can use the point-normal form of the equation of a plane, which is denoted by the formula: z - z0 = n (x - x0, y - y0), where (x0, y0, z0) is a point on the plane and n is the normal vector to the plane. Due to our desire for the tangent plane, we are aware that the normal vector is given by: n = z/x, z/y, -1.

The normal vector is therefore n = 3, -2, -1> at the location (4,3). Additionally, we are aware of the fact that z0 = f(4,3) = 3(4) - 2(3) = 6 for the given number (4). In light of this, the tangent plane equation is

z - 6 = <3, -2, -1> · (x - 4, y - 3)

z - 6 = 3(x - 4) - 2(y - 3) - (x - 4)

z = 3x - 2y + 6

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Answer:

First: \(y = \frac{4}{7} x + 2\)    

Second: \(y = -\frac{1}{7} x + 2\)

Third: \(y = x + 2\)    

Fourth: \(y = \frac{1}{7} x + 2\)    

Cost of one sandwich is $7 and cost of milkshake $5.

What is an equation?

In arithmetic, associate equation could be a formula that expresses the equality of 2 expressions, by connecting them with the sign =.

Main body:

According to question:

let cost of one sandwich be x and cost of milkshake be y .

7x + 5y = $79           -------(1)

2x + 5y = $44          -------(2)

subtracting equation 2 from 1 , we get

5x = 35

x = $7

so cost of one sandwich is $7.

now substituting value of x in equation 1 , we get

7(7) + 5y = 79

49 +5y = 79

5 y = 20

y = 4

so cost of one milkshake is $5.

Hence cost of one sandwich is $7 and cost of milkshake $5.

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Answer: forward

Step-by-step explanation:

Answer:

1. (b) is the answer

2. (b) x=3 ,y= -2

3. I dont lnow

The annual growth rate is 23.81%

The annual growth rate is the percentage increase of the production or an investment over a year. It's the annualized growth rate of the output.The formula for the annual growth rate is given as:

Annual Growth Rate = (1 + r)^(1 / n) - 1

Where,‘r’ is the growth rate, and‘n’ is the number of periods considered.

The percentage increase in the output over seven years is given as 21.6%.

The annual growth rate can be calculated as:

(1 + r)^(1 / n) - 1 = 21.6 / 7Or (1 + r)^(1 / 7) - 1 = 0.031

Therefore, (1 + r)^(1 / 7) = 1 + 0.031r = [(1 + 0.031)^(7)] - 1 = 0.2381

The annual growth rate is 23.81% (approx) in percent terms.

Therefore, the answer is "The annualized growth rate is 23.81%."

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