If the diameter of a circle is 8.4 in., find the area and the circumference of the circle. Use 3.14 for pi. Round your answers to the nearest hundredth.

Answer:

Step-by-step explanation :

I suggest you ask an expert

The required function is - cos (80°)

In mathematics, reference angles are also known as acute angles. It falls in an interval of fewer than 90 degrees. The reference angles are used to evaluate the larger angles. Even to find the larger angles, we use reference angles that are less than 90 degrees.

The data is :

The trigonometric function is cos(260°)

Here, the angle will lie in the third quadrant, so use the reference angle to evaluate the function as follows,

Cos(270° - 10°) = - sin(10°)   [Here, use the identity [tex]sin(\frac{3\pi}{2}-\theta )=-cos(\theta)[/tex]]

                        = -sin(90° - 80°)  [Use the identity [tex]cos(\frac{\pi}{2} -\theta)=sin(\theta)[/tex]]

                       = - cos (80°)

Thus, the required function is - cos (80°).

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To find the sum of all left leaves in a binary tree, Python programming language is used and code is written in Phyton.

Here's the Python code to find the sum of all left leaves in a binary tree:

Class TreeNode:

def __init__(self, x):

self.val = x

self. left = none

self.right = None

def sum_of_left_leaves(root):

If not root:

return 0

# If the left child of the root node is a leaf node, add its value to the total

If root. left is root.left.left and not root. left.right :

returns root. left.val + sum_of_left_leaves(root.right)

# Recursively go left and right subtrees and add their left leaves to the sum

returns sum_of_left_leaves(root. left) + sum_of_left_leaves(root. right)

This code first checks to see if the root node is None. If so, return 0 as there are no leaves left to add.

Then check if the left child of the root node is a leaf node. If so, add that value to the total and recursively traverse only the correct subtree.

If the left child of the root node is not a leaf node, recursively traverse the left and right subtrees and add the left leaves of both subtrees to the total.

Finally, it returns the sum of the leaves on the left side of the entire binary tree.

To utilize this work, make a double tree utilizing the TreeNode lesson and call the sum_of_left_leaves to work, passing the root of the twofold tree as a contention. 

Here is an example of using the function:

# build a binary tree

root = tree node (3)

root. left = tree node (9)

root. right = tree node (20)

root. right.left = TreeNode(15)

root. right.right = TreeNode(7)

# compute the sum of the leaves on the left

sum = sum_of_left_leaves(root)

# print result

print(sum) # output:

twenty-four 

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The coefficient of a¹⁰ b² in  the given binomial expression is 264

and number of functions from A to B will be  64.

What is binomial expansion?

A binomial is nothing but an algebraic expression with two terms. For example, c + g, u - v, etc. are binomials. We have a set of algebraic identities to find the expansion when the indices is 2 and 3. For example, (a - b)² = a² + 2ab + b². But  if the exponents are bigger numbers then It is hard to find the expansion manually. Then here the binomial expansion formula eases this process.

1st part:

By binomial theorem, the (r+1 )th term [tex]T_{r+1}[/tex]  in an binomial expression

(a+ b)ⁿ  can be expressed as,

[tex]T_{r+1}[/tex] = [tex]nC_{r} a^{n-r} b^{r}[/tex]

Let us assume that a¹⁰ b² occurs in the (r+1 )th term of the expression

(a-2b)¹²

Then we have,

[tex]T_{r+1}[/tex] = [tex]12C_{r} a^{12-r} (-2b)^{r}[/tex]

Now comparing the indices of a¹⁰ b² we get, r= 2

Thus the coefficient of a¹⁰ b² is

[tex]12C_{2} (-2)^{2} a^{10} b^{2}[/tex]

The value of [tex]12C_{2}[/tex] = (12!)/(10!×2!)

                             = 66

Now 66×4= 264

The coefficient of a¹⁰ b² is 264

2nd part:

A = {1, 2, 3} to B = {a, b, c, d}

n(A)= 3 and n(B)= 4

So number of functions from A to B will be 4³= 64.

Hence, the coefficient of a¹⁰ b² is 264

and number of functions from A to B will be 4³= 64.

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The Multiplicative inverse of 47x = 1 mod 64 is 47 x 15 = 1 (mod 64) . Using Inverse GCD 50x = 63 mod 71 is 50 x 27 = 63 (mod 71).

The reciprocal of a particular integer is referred to as the multiplicative inverse. It is employed to make mathematical expressions simpler. The word "inverse" denotes an opposing or opposed action, arrangement, position, or direction. A number becomes 1 when it is multiplied by its multiplicative inverse.

When a number is multiplied by the original number, the result is 1, that number is said to be the multiplicative inverse of that number. A-1 or 1/a is used to represent the multiplicative inverse of the constant 'a'. In other terms, two integers are said to be multiplicative inverses of one another when their product is 1. The division of 1 by a number yields the multiplicative inverse of that number.

a) The Multiplicative inverse of 47x = 1 mod 64 is

x = 47⁻¹ mod 64

Mow,

Let (47)⁻¹ = y(mod64)

Then, 47y + 64k = 1

Now,

64 = 47 x 1 + 17

47 = 17 x 2 +13

17 = 13 x 1 + 4

13 = 4 x 3 + 1

Comparing with equation we get,

y = 15 and k = -11

Hence, 47 x 15 = 1 (mod 64)

b) The Multiplicative inverse of 50x = 63 mod 71 is

x = 50⁻¹ 63(mod 71)

Mow,

Let (50)⁻¹ = y(mod71)

Then, 50y + 71k = 1

Now,

71 = 50 x 1 + 21

50 = 21 x 2 + 8

21 = 8 x 2 + 5

8 = 5 x 1 + 3

5 = 3 x 1 + 2

3 = 2 x 1 + 1

Comparing with equation we get,

y = 27 and k = -19

Hence, 50 x 27 = 63 (mod 71)

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5. The multiplicative inverse of 47x = 1 mod 64 is 47 x 15 = 1 (mod 64)

6.  The value of 50x = 63 mod 71 using inverse GCD is 50 x 27 = 63 (mod 71).

Given that

47x = 1 mod 64

Divide both sides of the equation by 47

So, we have

47/47x = 1/47 mod 64

Evaluate the quotient

x = 47⁻¹ mod 64

Let (47)⁻¹ = y(mod64)

So, we have

47y + 64k = 1

Expand 64

64 = 47 x 1 + 17

Expand 47

47 = 17 x 2 +13

Expand 17

17 = 13 x 1 + 4

Expand 13

13 = 4 x 3 + 1

When the equations are compared, we have

y = 15 and k = -11

This means that, the multiplicative inverse is 47 x 15 = 1 (mod 64)

Here, we have

50x = 63 mod 71

Divide

50x/50 = 63/50 mod 71

So, we have

x = 50⁻¹ 63(mod 71)

Let (50)⁻¹ = y(mod71)

So, we have

50y + 71k = 1

Expand 71

71 = 50 x 1 + 21

Expand 50

50 = 21 x 2 + 8

Expand 21

21 = 8 x 2 + 5

Expand 8

8 = 5 x 1 + 3

Expand 5

5 = 3 x 1 + 2

Expand 3

3 = 2 x 1 + 1

When the equations are compared, we have

y = 27 and k = -19

This means that 50 x 27 = 63 (mod 71)

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The amount of time this company would continue to manufacture this computer is equal to 14 months.

In order to calculate the amount of time this company continue to manufacture this computer, we would have to determine an equation for S(t) by integrating the function S'(t) with respect to t as follows;

[tex]S'(t)= -10t^{\frac{2}{3} } \\\\S(t)= \int S'(t) \, dt\\\\S(t)= \frac{-10}{\frac{2}{3} +1}t^{\frac{2}{3}+1} +C\\\\S(t)= -6t^{\frac{5}{3}} +C\\\\S(t)= -6t^{\frac{5}{3}} +1480[/tex]

Note: The y-intercept or initial value is 1,480 (t = 0).

At 1,000 computers, we have:

[tex]1000= -6t^{\frac{5}{3}} +1480\\\\6t^{\frac{5}{3}}= 1480-1000\\6t^{\frac{5}{3}}=480\\\\t^{\frac{5}{3}}=80\\\\t=\sqrt[\frac{5}{3} ]{80}[/tex]

Time, t = 13.86 ≈ 14 months.

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Answer:

Volume formal= L × W × H

Volume formal = 4 × 7 × 9

Answer = 4 × 7 × 9 =252

To find the probability that the amount of pollutant in a given sample will exceed 1/2 for the smokestack with the filter installed, you need to determine the distribution of the pollutant levels and then calculate the probability based on that distribution.

To find the probability that the amount of pollutant in a given sample will exceed 1/2 when a filter is installed in the smokestack, we need to use the information provided in the question. However, we do not have any specific information on the distribution of the pollutant levels, so we cannot calculate the exact probability.
Instead, we can make some assumptions based on the purpose of the filter. Filters are typically installed to reduce the amount of pollutants emitted into the air, so it is reasonable to assume that the filter will decrease the amount of pollutant in each sample. Therefore, we can expect the probability of the pollutant level exceeding 1/2 to decrease when a filter is installed.
Without more information, we cannot give an exact probability, but we can say that it is likely lower than the probability without a filter. We would need to know more about the specific characteristics of the filter and the pollutant to make a more accurate estimate.

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The value of the arbitrary constant is approximately -1.08.

To determine the value of the arbitrary constant of the antiderivative of F(x) = x^2 * ln(x) given the initial value x = 7.15 and y = 2.21, follow these steps:

Step 1: Find the antiderivative of F(x) = x^2 * ln(x).
The antiderivative can be found using integration by parts. Let u = ln(x) and dv = x^2 * dx.
Then, du = (1/x) * dx and v = (x^3)/3.

Using integration by parts formula: ∫u dv = u * v - ∫v du

∫(x^2 * ln(x)) dx = (x^3 * ln(x))/3 - ∫(x^3 * (1/x)) dx/3

Now integrate the second term:
= (x^3 * ln(x))/3 - (1/3) * ∫x^2 dx
= (x^3 * ln(x))/3 - (1/3) * (x^3/3)

Step 2: Add the arbitrary constant 'C' to the antiderivative.
y(x) = (x^3 * ln(x))/3 - (x^3/9) + C

Step 3: Use the initial values x = 7.15 and y = 2.21 to find the value of 'C'.
2.21 = (7.15^3 * ln(7.15))/3 - (7.15^3/9) + C

Step 4: Solve for 'C'.
C ≈ -1.08 (rounded to 2 decimal places)

The value of the arbitrary constant is approximately -1.08.

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Answer:

5 units

Step-by-step explanation:

To determine the distance between the points (-3, -2) and (0, 2), we can use the distance formula.

[tex]\boxed{\begin{minipage}{7.4 cm}\underline{Distance Formula}\\\\$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$\\\\\\where:\\ \phantom{ww}$\bullet$ $d$ is the distance between two points. \\\phantom{ww}$\bullet$ $(x_1,y_1)$ and $(x_2,y_2)$ are the two points.\\\end{minipage}}[/tex]

Let (x₁, y₁) = (-3, -2)

Let (x₂, y₂) = (0, 2)

Substitute the values into the formula and solve for d:

[tex]\begin{aligned}\implies d&=\sqrt{(0-(-3))^2+(2-(-2))^2}\\&=\sqrt{(0+3)^2+(2+2)^2}\\&=\sqrt{(3)^2+(4)^2}\\&=\sqrt{9+16}\\&=\sqrt{25}\\&=5\; \rm units \end{aligned}[/tex]

Therefore, the distance between the given points (-3, -2) and (0, 2) is 5 units.

Answer:is 5

Step-by-step explanation: cuz I read other answer

To find the volume of the solid e that lies above the cone z, we will use spherical coordinates.

First, we need to define the cone z. We know that it is a cone, so it has a circular base with radius r and height h. We can write the equation of the cone as:

z = h - √(x^2 + y^2)

Next, we need to find the limits of integration for the spherical coordinates. We know that the solid e lies above the cone z, so the limits for the radial coordinate will be r = 0 to r = h. For the polar coordinate, we can choose any angle since the solid is symmetric about the z-axis. Let's choose θ = 0 to θ = 2π. For the azimuthal angle, we need to find the limits based on the cone z. We know that the cone intersects the sphere at the point (0, 0, h), so the azimuthal angle will go from 0 to the angle Φ such that z = 0:

0 = h - √(r^2 sin^2 Φ)
r^2 sin^2 Φ = h^2
sin^2 Φ = h^2/r^2
Φ = arcsin(h/r)

Therefore, the limits for the azimuthal angle will be Φ to π/2.

Now, we can set up the integral for the volume V:

V = ∫∫∫ r^2 sin Φ dr dΦ dθ
V = ∫0^h ∫Φ^π/2 ∫0^2π r^2 sin Φ dr dΦ dθ

Evaluating this integral gives:

V = (1/3)πh^3

Therefore, the volume of the solid e that lies above the cone z is (1/3)πh^3, which is the volume of a cone with height h and base radius h.

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The general solution to the differential equation is:

y(t) = y_h(t) + y_p(t) = e^(-2t)(c1 cos(3t) + c2 sin(3t)) - (1/170) e^(2t)cos(t) + (3/170) e^(2t)sin(t)

We have the differential equation:

d^2y/dt^2 + 4 dy/dt + 13y = e^(2t)cos(t)

The characteristic equation is:

r^2 + 4r + 13 = 0

Using the quadratic formula, we get:

r = (-4 ± sqrt(4^2 - 4(13)))/(2) = -2 ± 3i

So the general solution to the homogeneous equation is:

y_h(t) = e^(-2t)(c1 cos(3t) + c2 sin(3t))

To find a particular solution to the non-homogeneous equation, we can use the method of undetermined coefficients. Since e^(2t)cos(t) is of the form:

e^(at)cos(bt)

We guess a particular solution of the form:

y_p(t) = A e^(2t)cos(t) + B e^(2t)sin(t)

Taking the first and second derivatives, we get:

y'_p(t) = 2A e^(2t)cos(t) - A e^(2t)sin(t) + 2B e^(2t)sin(t) + B e^(2t)cos(t)

y''_p(t) = 4A e^(2t)cos(t) - 4A e^(2t)sin(t) + 4B e^(2t)sin(t) + 4B e^(2t)cos(t) + 2A e^(2t)sin(t) + 2B e^(2t)cos(t)

Substituting these back into the original equation, we get:

(4A + 2B) e^(2t)cos(t) + (4B - 2A) e^(2t)sin(t) + 13(A e^(2t)cos(t) + B e^(2t)sin(t)) = e^(2t)cos(t)

We can equate coefficients of like terms on both sides to get a system of equations:

4A + 2B + 13A = 1

4B - 2A + 13B = 0

Solving for A and B, we get:

A = -1/170

B = 3/170

So a particular solution to the non-homogeneous equation is:

y_p(t) = (-1/170) e^(2t)cos(t) + (3/170) e^(2t)sin(t)

Therefore, the general solution to the differential equation is:

y(t) = y_h(t) + y_p(t) = e^(-2t)(c1 cos(3t) + c2 sin(3t)) - (1/170) e^(2t)cos(t) + (3/170) e^(2t)sin(t)

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Note that the equation of the line perpendicular to the tangent to the curve y = x³ − 3x+1 is y = (-1/9)x + 7/3.

To find the  equation of the line perpendicular to the tangent of the curve at  the point (2, 3):


Get the slop of the tangent at that point.

To do this, we take  derivative of the function y = x³ - 3x + 1 and evaluating it at x = 2:

y' = 3x² - 3

y '(2) = 3 (2) ² -  3 = 9

So the slope of  (2, 3) =  9.

Since   the line we are looking for is  perpendicular to this tangent, its slope will be the  negative reciprocal of 9, which is -1/ 9.

Next,  use the point-slope form of a line to write the equation of the line

y - 3 = (-1/9) ( x - 2)

⇒ y = (-1/9)x  + 7/3

So the  equation of the lie perpendicular to the tangent to the curve at the point (2,3) is y = (-1/9)x + 7/3.

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Full Question:

Although part of your question is missing, you might be referring to this full question:

Find equation to the line perpendicular to the tangent to the curve y=x³−3x+1 , at the point (2,3)

.

The spherical coordinate expression for F(x, y, z) is:

[tex]F(\rho , \theta , \phi) = \rho^5*sin^3(\theta)*cos^2(\theta)*sin(\phi)^2 + \rho^2*sin^2(\phi)^2, where \rho = \sqrt{x^2 + y^2 + z^2}, \theta = arctan(y/x), and \phi = arccos(z/\rho).[/tex]

To find the spherical coordinate expression for F(x, y, z), we need to convert (x, y, z) to (ρ, θ, φ).

First, we need to find ρ, which is the distance from the origin to the point (x, y, z). Using the formula for ρ in spherical coordinates, we have:

[tex]\rho = \sqrt{x^2 + y^2 + z^2}[/tex]

Next, we need to find θ and φ, which are the angles that the point (x, y, z) makes with the positive x-axis and positive z-axis, respectively. Using the formulas for θ and φ in spherical coordinates, we have:

θ = arctan(y/x)
φ = arccos(z/ρ)

Finally, we can express F(x, y, z) in terms of (ρ, θ, φ) using the following formula:

[tex]F(\rho, \theta , \phi) = \rho^5*sin^3(\theta)*cos^2(\theta)*sin(\phi)^2 + \rho^2*sin^2(\phi)^2[/tex]

Therefore, the spherical coordinate expression for F(x, y, z) is:

[tex]F(\rho , \theta , \phi) = \rho^5*sin^3(\theta)*cos^2(\theta)*sin(\phi)^2 + \rho^2*sin^2(\phi)^2, where \rho = \sqrt{x^2 + y^2 + z^2}, \theta = arctan(y/x), and \phi = arccos(z/\rho).[/tex].

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Answer:

The expression that represents how much money Monique will make this week is:

12h + 20

Where 12h represents the money she earns as a lifeguard (h hours at $12 per hour) and 20 represents the money she earns for dog sitting.

By using the formula for variance

[tex]varX= m*(n*(m-1)/m^n)(1 - n(m-1)/(m^n-1))[/tex]

To compute varX:

we first need to find the expected value of X, denoted as E(X).

We can approach this by using the linearity of expectation, which states that the expected value of the sum of random variables is equal to the sum of their individual expected values.

Let's define a random variable Xi as the number of bins with exactly one ball. Then, we have:

[tex]X = X1 + X2 + ... + Xm[/tex]

where m is the total number of bins.

By the definition of Xi, we know that Xi can only take on values between 0 and 1, since a bin can either have exactly one ball (Xi = 1) or not (Xi = 0).

To find E(Xi), we can use the probability of Xi being 1. The probability that a specific bin has exactly one ball is given by:

[tex]P(Xi = 1) = (n choose 1) * ((m-1) choose (n-1)) / (m choose n)[/tex]

The first term (n choose 1) represents the number of ways to choose one ball out of n balls to put into the bin. The second term ((m-1) choose (n-1)) represents the number of ways to choose (n-1) balls out of the remaining (m-1) bins. Dividing by (m choose n) gives us the probability that exactly one bin has one ball.

Therefore, we have:

E(Xi) = P(Xi = 1) * 1 + P(Xi = 0) * 0
     = P(Xi = 1)=[tex](n choose 1) * ((m-1) choose (n-1)) / (m choose n)[/tex]
Using the linearity of expectation, we can find E(X) as:

E(X) = E(X1) + E(X2) + ... + E(Xm)
    = [tex]m * (n choose 1) * ((m-1) choose (n-1)) / (m choose n)[/tex]

Now, to find varX, we need to find the variance of Xi and use the formula for variance of a sum of random variables.

The variance of Xi can be found as:

Var(Xi) = E(Xi^2) - (E(Xi))^2

Since Xi can only take on values 0 or 1, we have:

E(Xi^2) =[tex]0^2 * P(Xi = 0) + 1^2 * P(Xi = 1) = P(Xi = 1)[/tex]

Therefore, we have:

Var(Xi) = P(Xi = 1) - (E(Xi))^2
      = [tex]m*(n*(m-1)/m^n) + m*(m-1)(n(m-1)/m^n)^2 - (mn(m-1)/m^n)^2[/tex]

Using the formula for variance of a sum of random variables, we have:

varX = Var(X1 + X2 + ... + Xm)
    = Var(X1) + Var(X2) + ... + Var(Xm)      (since Xi's are independent)
    = [tex]m*(n*(m-1)/m^n)(1 - n(m-1)/(m^n-1))[/tex]

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The San Cin value, A is A = 23.5 J/(K mol).

The standard reaction enthalpy, ΔH°, can be calculated using the bond energies of the reactants and products. Using the bond energies listed in the textbook or online resources, we get:

ΔH° = 2ΔH(O-H) - 2ΔH(O=O) - 2ΔH(O-H) = -196 kJ/mol

The standard reaction entropy, ΔS°, can be calculated using the standard entropy values of the reactants and products. Using the standard entropy values listed in the textbook or online resources, we get:

ΔS° = 2S(H2O) - 2S(H2O2) - S(O2) = -118.6 J/(K mol)

The standard reaction Gibbs free energy, ΔG°, can be calculated using the equation:

ΔG° = ΔH° - TΔS°

Substituting the values we obtained, we get:

ΔG° = -196000 - 298(-118.6)/1000 = -161.5 kJ/mol

The standard reaction Gibbs free energy can also be expressed in terms of the equilibrium constant, K, using the equation:

ΔG° = -RTlnK

where R is the gas constant (8.314 J/(K mol)) and T is the temperature in Kelvin. Solving for K, we get:

K = e^(-ΔG°/RT) = 2.2 x 10^19

Finally, the San Cin (Clausius-Clapeyron) equation can be used to calculate the temperature dependence of lnK:

lnK2/K1 = -ΔH°/R(1/T2 - 1/T1)

where K1 and T1 are the equilibrium constant and temperature at one condition, and K2 and T2 are the equilibrium constant and temperature at another condition. Assuming that ΔH° and ΔS° are independent of temperature, we can use the values we obtained at 298 K as the reference condition (K1 = 2.2 x 10^19, T1 = 298 K). To calculate the equilibrium constant at another temperature, T2, we need to know the standard reaction volume, ΔV°:

ΔV° = (-2ΔH(O-H) - ΔH(O=O))/RT = -25.5 cm^3/mol

Using the given pressure of 1 atm, we can convert ΔV° to ΔV:

ΔV = ΔV° + RT/P = -22.7 cm^3/mol

Substituting the values we obtained, we get:

lnK2/2.2x10^19 = -(-196000)/(8.314)(1/T2 - 1/298) - 22.7(1 - 1/T2)/(2.303)(8.314)

Solving for lnK2, we get:

lnK2 = -40.4 + 20820(1/T2 - 1/298)

Finally, solving for K2, we get:

K2 = e^lnK2 = 2.1 x 10^20

Therefore, the San Cin value, A, can be calculated as:

A = ln(K2/K1)/(1/T2 - 1/298) = 23.5 J/(K mol)

Rounding to the tenths place, we get A = 23.5 J/(K mol).

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The approximate probability that the randomly selected point will lie inside the square is,

≈ 13.3%

Since, Area of square with side of 5 mm is:

A = a² = (5 mm)² = 25 mm²

Now, Find total area of the figure:

A(total) = A(trapezoid) + A(triangle)

A(total) = (b₁ + b₂)h/2 + bh/2

A(total) = (14 + 18)(17 - 12)/2 + 18 x 12/2

           = 80 + 108 = 188

Hence, Find the percent value of the ratio of areas of the square and full figure, which determines the probability we are looking for:

= 25/188  x 100%

= 13.2978723404 %

≈ 13.3%

Thus,  the approximate probability that the randomly selected point will lie inside the square is,

≈ 13.3%

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The 7th derivative of f(x)=cos(3x³) - 1/x⁵ at x=0 is 3240.

To find the 7th derivative of f(x) at x=0, we need to build a Maclaurin series for f(x) from the series for cos(x). The Maclaurin series for cos(x) is:

cos(x) = 1 - x²/²! + x⁴/⁴! - x⁶/⁶! + ...

Using this, we can build a Maclaurin series for f(x) as follows:

f(x) = cos(3x³) - 1/x⁵

= (1 - (3x³)²/²! + (3x³)⁴/⁴! - (3x³)⁶/⁶! + ...) - 1/x⁵

= 1 - 9x⁶/²! + 81x¹²/⁴! - 729x¹⁸/⁶! + ... - 1/x⁵

= 1 - 9x⁶/²! + 81x¹²/⁴! - 729x¹⁸/⁶! + ... - x⁻⁵

Taking the 7th derivative of this expression and evaluating at x=0 gives:

f⁷ * ⁰ = 7! * (-9)/2!

= 3240

Therefore, the 7th derivative of f(x)=cos(3x³) - 1/x⁵ at x=0 is 3240.

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The value of the median of the data set is,

⇒ 86

We have to given that;

Math test score are shown in figure.

Here Number of values are 21

Hence, The value of the median of the data set is,

⇒ (21 + 1)/2

⇒ 22/2

⇒ 11th term

⇒ 8 | 6

⇒ 86

Hence, The value of the median of the data set is,

⇒ 86

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1. The truncation error is 0.66346 (approx)

2. the coefficient of [tex](x - 1)^2[/tex] in the expansion is 1, and the coefficient of [tex](x - 1)^4[/tex] is -1/3!.

3. [tex]H(z) = (1 - 28z^{-1} + z^{-2})/(1 - z^{-1})[/tex]

4. [tex]x(n) = [-1/(n - 5)^3 + 0.375*2^{(n-1)}]u(n-1)[/tex]

What is truncation error?

Truncation error refers to the difference between an exact or ideal mathematical result and an approximation of that result obtained through a numerical method, algorithm, or series expansion, where the approximation is truncated or rounded off at a certain point due to computational limitations.

The Maclaurin series expansion of cot(x) is given by:

[tex]cot(x) = 1/x - (x/3) - (2x^3)/45 - (2x^5)/945 + ...[/tex]

The first four terms are:

cot(x) ≈ 1/x - (x/3)

If x = 0.5, then the exact value of cot(x) is:

cot(0.5) = 1/tan(0.5) = 1/0.546302 = 1.830127

The truncation error is the difference between the exact value and the approximation:

error = cot(0.5) - (1/0.5 - (0.5/3)) = 1.830127 - 1.166667 = 0.66346 (approx)

2. We can expand xsinx - 1 in powers of x - 1 using the Maclaurin series for sin(x):

[tex]sin(x) = x - (x^3)/3! + (x^5)/5! - ...[/tex]

Multiplying by x and subtracting 1 gives:

[tex]x*sin(x) - 1 = x^2 - (x^4)/3! + (x^6)/5! - ...[/tex]

Now, replacing x with (x - 1) gives:

[tex](x - 1)*sin(x - 1) - 1 = (x - 1)^2 - ((x - 1)^4)/3! + ((x - 1)^6)/5! - ...[/tex]

So, the coefficient of [tex](x - 1)^2[/tex] in the expansion is 1, and the coefficient of [tex](x - 1)^4[/tex] is -1/3!.

3. The z-transform of h(n) is given by:

H(z) = Z{h(n)} = Z{S(n)} - 28Z{(n − 1)} + Z{S(n - 2)}

Using the z-transform properties of linearity, time shifting, and the z-transform of the unit step function, we get:

[tex]H(z) = 1/(1 - z^{-1}) - 28z^-{1}/(1 - z^{-1}) + z^{-2}/(1 - z^{-1})[/tex]

Simplifying the expression, we get:

[tex]H(z) = (1 - 28z^{-1} + z^{-2})/(1 - z^{-1})[/tex]

4. To find the sequence x(n) from the given Z-transform, we use partial fraction decomposition:

[tex]-1/(z - 5)^3 + 0.375/(1 - 0.5z)^2[/tex]

Using the z-transform property of the delayed unit step function, we get:

[tex]x(n) = [-1/(n - 5)^3 + 0.375*2^{(n-1)}]u(n-1)[/tex]

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Answer:

[D] 29 inches

Step-by-step explanation:

Times (Minutes)          Depth(Inches)

0                                      36

5                                      29

10                                     22

15                                      15

20                                      8

Based on the table, we can see that it's given the depth of the water in the pool 5 minutes after Samantha started draining the pool.

As a result, the answer is [D] 29 inches

RevyBreeze

Clark spends $ 12775 on these items which he does not need in a year (if we consider 365 days) where the average spend in a month is $35.

Clark finds that in an average month, he spends $35 on things he really doesn't need and can't afford.

Let us consider the month in consideration here to be of 30- days and ignore any months other number of days.

Thus, calculating the average, say x' , by formula, we get,

x' = (Summation of values of all observations ) / ( Number of observations)

⇒ 35 = Total spend / 30

⇒ Total spend = $ ( 35*30)

⇒ Total spend = $ 1050

Therefore, total spend on a year, that is 12 months (considering all months to be of 30- days ) = $( 1050*12) = $ 12600

But we know a year does not have 360 days. So we calculate the total spend on these 5 days where average month spend is $35 is $175.

Hence the total spend for a year with 365 days is = $( 12600 + 175 ) = $12775

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The measure of angle FED is 5x + 1°.

Let's use the angle DFE to solve for the measure of angle FED. We know that angle DFE measures (8x - 20)°. Since the diagonals of a rhombus bisect each other, we can use the fact that angle DFE is divided into two equal parts by diagonal DE.

Each of these two equal parts has measure (1/2)(8x - 20)° = 4x - 10°. Let's denote the measure of angle CDE as "y". Since angles DCE and CDE are complementary (they add up to 90°), we know that angle CDE has measure (90 - y)°.

Now, we can use the fact that the diagonals of a rhombus are perpendicular bisectors of each other. This means that angle CFD (which has measure (5x + 1)°) is equal to angle CDE (which has measure (90 - y)°).

Setting these two expressions equal to each other, we get:

5x + 1 = 90 - y

Solving for y, we get:

y = 89 - 5x

Now we can use the fact that angles DCE and CDE are complementary to find the measure of angle FED. Angle FED is equal to (90 - y)°, which is:

(90 - (89 - 5x))° = 5x + 1°

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The probability of not getting a 6 or 10 total on either of two tosses of a pair of fair dice is 7/9.

To find the probability of not getting a 6 or 10 total on either of two tosses of a pair of fair dice, we first need to find the total number of possible outcomes when rolling two dice. There are 6 possible outcomes for the first die and 6 possible outcomes for the second die, giving us a total of 6 x 6 = 36 possible outcomes.

Next, we need to determine how many of these outcomes result in a total of 6 or 10. There are 5 ways to get a total of 6: (1,5), (2,4), (3,3), (4,2), and (5,1). There are also 3 ways to get a total of 10: (4,6), (5,5), and (6,4). So, there are 5 + 3 = 8 outcomes that result in a total of 6 or 10.

Therefore, the probability of not getting a 6 or 10 total on either of two tosses of a pair of fair dice is:

P(not 6 or 10) = 1 - P(6 or 10)

= 1 - 8/36

= 1 - 2/9

= 7/9

So the probability of not getting a 6 or 10 total on either of two tosses of a pair of fair dice is 7/9.

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In the triangle, the values are:

PART A: AC = 9 units

PART B: Sin A = 1/√2

Trigonometry deals with the relationship between the ratios of the sides of a right-angled triangle with its angles.

Check the attached image for the sketch of triangle ABC.

From the sketch:

AC = √(AB² - BC²)       (Pythagoras theorem)

AC = √(162 - 81)

AC = √(81)

AC = 9 units

PART B:

Sin A = BC/AB (opposite/hypotenuse)

Sin A = 9/(9√2)

Sin A = 1/√2

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The additional fact would prove that quadrilateral WXYZ is a parallelogram is M∠Y ≅ m∠W . The option D is correct.

To prove that quadrilateral WXYZ is a parallelogram, we need to show that both pairs of opposite sides are parallel.

Option A, which states that XY=YZ, does not provide information about the parallelism of the sides, and it is not sufficient to prove that WXYZ is a parallelogram. Option B, which states that the sum of angles X and Y is 180 degrees, suggests that WXYZ may be a straight line, but it does not necessarily mean that the opposite sides are parallel.

Option C, which states that YZ=WX, suggests that the opposite sides may be equal in length, but again, it does not necessarily mean that they are parallel. Option D, which states that angle Y is congruent to angle W, provides information about the opposite angles of the quadrilateral, and this is enough to prove that the opposite sides are parallel. This is because in a parallelogram, opposite angles are congruent, and therefore, the fact that M∠Y ≅ m∠W proves that WXYZ is a parallelogram. Option D is the correct answer as it provides sufficient information to prove that WXYZ is a parallelogram.

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The computed value of a line integral, [tex]I = \int_C ( x \: e^y dx + x² y) dy [/tex] is equals to the 32

The line integrals form that we can work with the involvement of rewriting in terms of a single variable. During the integrating over a path where one of the variables is constant, then that variable is not actually variable at all, and there is no need to do more. We have a line

integral is [tex]I = \int_C ( x \: e^y dx + x² y) dy [/tex]

We have to determine its value along line segment x = 4

Now, the line segment is x = 4 that means, dx = 0 and 0≤y≤4. So, substitute all known values in above integral, [tex]I = \int_C ( x \: e^y dx + x² y) dy [/tex]

[tex]= \int_{ 0}^{2} x² y dy + 0[/tex]

[tex]= [ x² \frac{ y²}{2}]_{0}^{2}[/tex]

[tex]= [ x² \frac{ 2²}{2} - 0][/tex]

[tex]= 2x²[/tex]

= 2× 4² = 32

Hence, required value is 32.

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