can you solve this problem for me 40/4=x/2

Answer:

2

Step-by-step explanation:

I'm here to settle this :p

Answer:

12

thStep-by-step explanation:

To show that `(n + 3)7 ∈ Θ(n7)`, we need to prove that `(n + 3)7 = Θ(n7)`.This can be done by showing that `(n + 3)7 = O(n7)` and `(n + 3)7 = Ω(n7)` .Now, let's prove the two parts separately:

Proof for `(n + 3)7 = O(n7)`.

We want to prove that there exists a positive constant c and a non-negative constant k such that `(n + 3)7 ≤ cn7` for all `n ≥ k`.Using the Binomial theorem, we can expand `(n + 3)7` as:```
(n + 3)7
= n7 + 7n6(3) + 21n5(3)2 + 35n4(3)3 + 35n3(3)4 + 21n2(3)5 + 7n(3)6 + 37
≤ n7 + 21n6(3) + 21n5(3)2 + 35n4(3)3 + 35n3(3)4 + 21n2(3)5 + 7n(3)6 + n7
≤ 2n7 + 21n6(3) + 21n5(3)2 + 35n4(3)3 + 35n3(3)4 + 21n2(3)5 + 7n(3)6
≤ 2n7 + 84n6 + 441n5 + 2205n4 + 10395n3 + 45045n2 + 153609n + 729
```Thus, we can take `c = 153610` and `k = 1` to satisfy the definition of big-Oh notation. Hence, `(n + 3)7 = O(n7)`.Proof for `(n + 3)7 = Ω(n7)`We want to prove that there exists a positive constant c and a non-negative constant k such that `(n + 3)7 ≥ cn7` for all `n ≥ k`.Using the Binomial theorem, we can expand `(n + 3)7` as:```
(n + 3)7
= n7 + 7n6(3) + 21n5(3)2 + 35n4(3)3 + 35n3(3)4 + 21n2(3)5 + 7n(3)6 + 37
≥ n7
```Thus, we can take `c = 1` and `k = 1` to satisfy the definition of big-Omega notation. Hence, `(n + 3)7 = Ω(n7)`.

As we have proved that `(n + 3)7 = O(n7)` and `(n + 3)7 = Ω(n7)`, therefore `(n + 3)7 = Θ(n7)`.Thus, we have shown that `(n + 3)7 ∈ Θ(n7)`.From the proof, we can see that we used the Binomial theorem to expand `(n + 3)7` and used algebraic manipulation to bound it from above and below with suitable constants. This technique can be used to prove the time complexity of various algorithms, where we have to find the tightest possible upper and lower bounds on the number of operations performed by the algorithm.

Hence, we have shown that `(n + 3)7 ∈ Θ(n7)` for non-negative integer n.

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Answer:

answer is C

average speed=distance÷time=120÷4=30

To reduce the third-order ordinary differential equation y - y" - 4y + 4y = 0 into a companion system of linear equations, we introduce new variables u and v:

Let u = y,

v = y',

w = y".

Taking the derivatives of u, v, and w with respect to the independent variable (let's denote it as x), we have:

du/dx = y' = v,

dv/dx = y" = w,

dw/dx = y"'.

Now we can rewrite the given differential equation in terms of u, v, and w:

u - w - 4u + 4u = 0.

Simplifying the equation, we get:

-3u - w = 0.

This equation can be expressed as a system of first-order linear differential equations as follows:

du/dx = v,

dv/dx = w,

dw/dx = -3u - w.

Now we have a companion system of linear equations:

du/dx = v,

dv/dx = w,

dw/dx = -3u - w.

To solve this system completely, we need to find the solutions for u, v, and w. By solving the system of differential equations, we can obtain the solutions for u(x), v(x), and w(x), which will correspond to the solutions for y(x), y'(x), and y"(x), respectively.

The exact solutions for this system of differential equations depend on the initial conditions or boundary conditions that are given. By applying appropriate initial conditions, we can determine the specific solution to the system.

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To determine whether the series converges or diverges, we need to analyze the given series. The series is:

Σ (5^n / (4n - 2)), from n = 1 to infinity.

To check for convergence, we can apply the Ratio Test, which involves finding the limit of the ratio between consecutive terms. Let's denote the term a_n as (5^n / (4n - 2)). Then, we'll compute the limit as n approaches infinity:

lim (n→∞) (a_(n+1) / a_n) = lim (n→∞) ((5^(n+1) / (4(n+1) - 2)) / (5^n / (4n - 2)))

Simplifying this expression, we get:

lim (n→∞) (5^(n+1) / 5^n) * ((4n - 2) / (4(n+1) - 2))

The first part of the limit simplifies to:

lim (n→∞) 5 = 5

The second part of the limit becomes:

lim (n→∞) ((4n - 2) / (4n + 2)) = 1

Multiplying both limits, we get:

5 * 1 = 5

Since the limit is greater than 1, the Ratio Test indicates that the series diverges.

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9514 1404 393

Answer:

  £27.50

Step-by-step explanation:

The general approach is ...

1. The area to be painted will be the area of the four walls, less the area of the door (which is assumed to be a hole in the wall, so is not painted).

Each wall has the same dimensions, so the same area. The area of the rectangular wall is ...

  A = LW

  A = (3.5 m)(2.6 m) = 9.1 m²

The area of the door is ...

  A = (2.2 m)(0.8 m) = 1.76 m²

Then the area to be painted is the area of the 4 walls less the area of the door:

  painted area = 4(9.1 m²) -1.76 m² = 34.64 m²

__

2. Each 2 L tin of paint will cover (2 L)×(8 m²/L) = 16 m², so the number of tins needed is ...

  (34.64 m²)/(16 m²/tin) = 2.165 tins

We assume this means Aisha will need to purchase 3 tins, since she will need more paint than is provided by 2 tins.

__

3. Because of the price offer on the paint, Aisha will pay full price for the first two tins, half price for the 3rd tin. That is, she will pay 2 1/2 times the full price of a tin when she buys the 3 tins of paint she needs. Each tin costs £11, so Aisha will pay ...

  (2 1/2)(£11) = £27.50

Aisha will pay £27.50 for the paint to paint her living room.

Answer:

that I have a panda but the black on it and I have kiss me kiss me at

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:

Step-by-step explanation:

The formula for 2 secants coming out of a common point is a proportion

The formula in this case, is

PA*PB = CD *  PC

Givens

PB = 10

PA = 8 + 10 = 18

PD = X

PC = X + 20

Solution

10*18     =    x * (x + 20)                    Cross Multiply

180 = x^2 + 20x                               Remove the Brackets

180 -180 =   x^2 + 20x -180             Subtract 180 from both sides.

0 =  x^2 +20x - 180                         Combine

This factors into something not in your answer choices or even close rounded.

Make sure you have the right diagram for the right question.

To accurately calculate the values of sinx, cosx, and tanx we use trigonometric functions.

To find sin(x), cos(x), and tan(x) in a right triangle with side lengths d, e, and f, we first need to identify which sides are opposite, adjacent, and hypotenuse relative to angle x. Let's assume that side d is opposite to angle x, side e is adjacent to angle x, and side f is the hypotenuse.
Now, we can use the definitions of the trigonometric functions:
1. sin(x) = opposite/hypotenuse = d/f
2. cos(x) = adjacent/hypotenuse = e/f
3. tan(x) = opposite/adjacent = d/e
These are the expressions for sin(x), cos(x), and tan(x) in terms of the given side lengths d, e, and f.

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As per the volume of the rectangular tank, the dimensions are 13.78 x 379.82 x 13.78

Volume of rectangle:

The general formula to calculate the volume of the rectangle is

V = length x width x height.

Given,

A rectangular tank that is 5234 ft^3 with a square base and open top is to be constructed of sheet steel of a given thickness.

Here we need to find the dimensions of the rectangular tank,

As per the given volume of rectangular tank, when we equate this with the formula, then we get,

=> 5234 = length x width x height.

Let us consider the length and the width are equal then we get the value of height as.

=> height = 5234/length

So, the value is calculated by using the surface area formula,

=> A = length² + 5234/length

When we differentiate the surface area with respect to

=> dA/dl = 2l - 5234/l²

To minimize the surface area, so dA/dl = 0,

=> 2l = 5324/l²

=> 2l³ = 5234

=> l³ = 2617

=> l = ∛2617

Therefore, the value of length is 13.78

Then the height is calculated as.

=> h = 5234/13.78 = 379.82

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The radius of convergence, R, of the series ∑[infinity]n=1 xn8n-1 is 1/8. The interval of convergence, I, is (-1/8, 1/8) or (-1/8 ≤ x ≤ 1/8).

To find the radius of convergence, we can use the ratio test. Let's apply the ratio test to the given series:

lim |xn+1 × 8n / (xn × 8n-1)| as n approaches infinity.

Simplifying the expression, we get:

lim |x × 8n / 8n-1| as n approaches infinity.

Since the absolute value of x does not affect the limit, we can simplify further:

lim |8x| as n approaches infinity.

For the series to converge, the limit must be less than 1. Therefore, we have:  |8x| < 1.

Solving for x, we find:   -1/8 < x < 1/8.

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Answer: It's the first one

Also could you mark my answer as brainliest? It helps and doesnt hurt

The expression

f(t) = 5t + 11

Is read verbally as, "function of t at 5t plus 11."

This is alredy

The given function is f(x) = 15(1.02)^x, where x is the number of years from the date at which money is initially deposited.

This means that $15 were initially deposited into the account, and the amount grows at an annual rate of 2% (which is represented by 1.02 being raised to the power of x).

Therefore, the correct answer is: $15 were initially deposited into the account, which grows at an annual rate of 2%.

Hope I helped you...

Answers:

1. Square root of x cubed

2. Seventeen to the power of one fifth

3. Fifth root of y cubed

4. Z to the power of two thirds

Hopefully this is a helpful blessing!

There are a total of 600 Employees in the automotive company.

The total number of employees in the automotive company, we need to determine the proportion of employees working in each area.

Let's denote the total number of employees as "x". According to the given information:

- The proportion of employees working in auto parts assembly is 2/3 of the total. So, the number of employees in auto parts assembly is (2/3)x.

- The proportion of employees working in the washing area is 1/8 of the total. So, the number of employees in the washing area is (1/8)x.

- The proportion of employees working in the customer service area is 1/6 of the total. So, the number of employees in the customer service area is (1/6)x.

- The rest of the employees are executives, and the number of executives is given as 25.

We can set up an equation to represent the total number of employees:

(2/3)x + (1/8)x + (1/6)x + 25 = x

To solve this equation, we can simplify and solve for x:

[(16/24)x + (3/24)x + (4/24)x] + 25 = x

(23/24)x + 25 = x

25 = x - (23/24)x

25 = (1/24)x

x = 24 * 25

x = 600

Therefore, there are a total of 600 employees in the automotive company.

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The Electric field charge density (G) is 4.10 × 10^5 V/m.

To obtain the answer for Electric field charge density (G), use the formula below:

                                      E = σ/2πϵ₀d

        Where:E is electric fieldσ is the surface charge density d is the perpendicular distance between the point and the surface.ϵ₀ is the permittivity of free space.

In most textbooks, it is taken as 8.85 × 10^-12 C² N^-1 m^-2.

σ is a scalar quantity and has units of C/m². G is a scalar quantity and has units of V/m.

A scalar quantity is defined as a physical quantity with magnitude only and no direction.

To obtain the answer for Electric field charge density (G), use the formula below:

                              E = σ/2πϵ₀d

Now let's assume that the value of σ is 15 µC/m² and the value of d is 7 cm which is 0.07 m.

And the value of ϵ₀ is 8.85 × 10^-12 C² N^-1 m^-2.

Therefore, Electric field charge density (G) will be given as follows:G = Eσ=σ/2πϵ₀dG = (15 × 10^-6 C/m²)/(2π × 8.85 × 10^-12 C² N^-1 m^-2 × 0.07 m)G = 4.10 × 10^5 V/m

Therefore, the Electric field charge density (G) is 4.10 × 10^5 V/m.

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Answer:

7× greater than or equal to 50

Step-by-step explanation:

it won't let me put the sign but I think that the correct answer

One car travel South at 64 mi/h and the other travels west at 48 mi/h. The distance between the cars increases with rate at 80 mi/h.

To find the rate of change, we need to find the derivative of the variables with respect to time.

Let:

p = distance between 2 cars

q = distance between car 1 and the start point

r = distance between car 2 and the start point

Using the Pythagorean Theorem:

p² = q² + r²

Take the derivative with respect to time:

2p dp/dt = 2q dq/dt + 2r dr/dt

dq/dt = speed of car 1 = 64 mi/h

dr/dt = speed of car 2 = 48 mi/h

The distance of car 1 and car 2 from the start point after 4 hours:

q = 64 x 4 = 256 miles

r = 48 x 4 = 192 miles

Using the Pythagorean theorem:

p² =256² + 192²

p = 320 miles

Hence,

2p dp/dt = 2q dq/dt + 2r dr/dt

p dp/dt = q dq/dt + r dr/dt

320  x dp/dt = 256 x 64 + 192  x 48

dp/dt = 80

Hence, the distance between the cars increases with rate at 80 mi/h

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Answer:

More bananas

Step-by-step explanation:

Because the bananas are cheaper you can buy 17 more which would cost $6.8. 0.40x17=6.8

Answer: x = 22.21

Step-by-step explanation:

Given

7 · cos (2x) = 5

Divide 7 on both sides

7 · cos (2x) / 7 = 5 / 7

cos (2x) = 5/7

Divide cosine on both sides (meaning applying cos⁻¹ to the right-hand side)

2x = cos⁻¹ (5/7)

Divide 2 on both sides

2x / 2 = [cos⁻¹ (5/7)] / 2

\(\boxed {x=22.21}\) (Rounded to the hundredth place)

Hope this helps!! :)

Please let me know if you have any questions

Answer:

April Beginning Balance $ 1,633,427

Step-by-step explanation:

The closing balance of January is the opening balance of February

February,

Opening Balance $1,234,567

Add Payment received on invoices $825k

Less Cost of sales $198k,

Less Overheads $356k ,

Less Other Expenses $92k .

February Ending Balance $ 1,413, 567

March

Beginning Balance $ 1,413, 567

Add Payment received on invoices $825k *1.12= 924 k

Less Cost of sales $198k *1.09= 215.82k

Less Overheads $356k *1.09= 388.04k

Less Other Expenses $92k *1.09= 100.28k

March Ending Balance = $ 1,633,427

April Beginning Balance $ 1,633,427

Treating the Costs of Sales, Overheads and the other expenses as the expenses paid out of the Bank Balance meaning no accounts payable or other cash paid.

Answer:

34

Step-by-step explanation:

Diameter is twice length of radius

Answer:

Diameter=34 cm

D.

Step-by-step explanation:

Diameter=radius*2

17*2=34 cm

The formula you have given (SS₁ + SS₂) / (n₁+ n₂) is actually the formula for the unweighted average of the variances, which is not appropriate when the sample sizes and variances are different between the two samples.

The formula for pooled variance is:

pooled variance = (SS₁+ SS₂) / (df₁ + df₂)

where SS₁ and SS₂ are the sum of squares for the two samples, df₁ and df₂ are the corresponding degrees of freedom, and the pooled variance is the weighted average of the variances of the two samples, where the weights are proportional to their degrees of freedom.

Note that the denominator is df₁ + df₂ not n₁+ n₂. The degrees of freedom take into account the sample sizes as well as the number of parameters estimated in

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Answer:

its c

Step-by-step explanation:

i took the test and got 100

Answer:

I think this is how the response is meant to be, do you need workings to solve AB aswell?

a. To find the general solution of the fourth-order differential equation y" - 16y = 0, we can use the characteristic equation method.

The characteristic equation for this differential equation is r^4 - 16 = 0. Solving this equation, we find the roots:

r1 = 2, r2 = -2, r3 = 2i, r4 = -2i.

The general solution of the differential equation is given by:

y(t) = c1e^(2t) + c2e^(-2t) + c3e^(2it) + c4e^(-2it),

where c1, c2, c3, c4 are arbitrary constants.

However, we can simplify this solution by using Euler's formula:

e^(ix) = cos(x) + i*sin(x),

where i is the imaginary unit.

Therefore, the general solution can be written as:

y(t) = c1e^(2t) + c2e^(-2t) + c3(cos(2t) + isin(2t)) + c4(cos(2t) - isin(2t)).

Simplifying further, we have:

y(t) = c1e^(2t) + c2e^(-2t) + (c3 + c4)cos(2t) + (c3 - c4)i*sin(2t).

b. The "famous formula" relating the exponential function to trigonometric functions is Euler's formula:

e^(ix) = cos(x) + i*sin(x),

where e is the base of the natural logarithm, i is the imaginary unit, cos(x) represents the cosine function, and sin(x) represents the sine function.

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In the situation, the number of bacterias are doubling for each sheet of paper cut, thus, the exponential equation for the puber is:

\(f(n) = 2^n\)

Initially, there was only one sheet of paper. Then, each sheet is cut in half, so we will have 2 sheets, then 4 sheets, then 8 sheets, and so on. That is, the number of sheets is continuously doubling, thus, the population after n cuts can be modeled by the following exponential equation:

\(f(n) = 2^n\)

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Answer:

-0.35

Step-by-step explanation:

(2.5+1.8)÷2 then minus from 1.8

4.3÷2=2.15

1.8-2.15= -0.35