can someone please help me i need help

Answer:

answer is 1

Step-by-step explanation:

y∝x

y=kx

15=3k

divide 3 both sides

k=5

so y=5x

when y is 5

5=5×x

divide 5 both sides

x=1

Answer:

circumference=2\pi r

25.12cm

Step-by-step explanation:

hope this helps

The required circumference of the given circle is 25.12 cm as shown figure.

The Circumference of a circle is defined as the product of the diameter of the circle and pi.

C = πd

where 'd' is the diameter of the circle

We have been given data as follows:

The radius of the circle (r) = 4 cm

Circumference of the circle = 2πr

Substitute the values in the above formula and we get

Circumference of the circle = 2π(4)

Circumference of the circle = 3.14(8) = 25.12 cm

The required circumference of the given circle is 25.12 cm.

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Answer:

C.

Step-by-step explanation:

Because the denominator will be 8-8 = 0

The equation of the path of the parabola is y = a(x - 13)² + 27

Given data ,

To represent the path of Al's toss, we can assume that the path is a parabolic trajectory.

The equation of a parabola in vertex form is given by:

y = a(x - h)² + k

where (h, k) represents the vertex of the parabola

Now , the balloon was released from the 10-yard line and landed at the 16-yard line, we can determine the x-values for the vertex of the parabola.

The x-coordinate of the vertex is the average of the two x-values (10 and 16) where the balloon was released and landed:

h = (10 + 16) / 2 = 13

Since the height of the balloon reached 27 yards, we have the vertex point (13, 27)

Now, let's substitute the vertex coordinates (h, k) into the general equation:

y = a(x - 13)² + k

Substituting the vertex coordinates (13, 27)

y = a(x - 13)² + 27

To determine the value of 'a', we need another point on the parabolic path. Let's assume that the highest point reached by the balloon is the vertex (13, 27).

This means that the highest point (13, 27) lies on the parabola

Substituting the vertex coordinates (13, 27) into the equation

27 = a(13 - 13)² + 27

27 = a(0) + 27

27 = 27

Hence , the equation representing the path of Al's toss is y = a(x - 13)² + 27, where 'a' can be any real number

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These parametric equations represent the x and y coordinates of points on the line as the parameter t varies.

To write the vector equation and parametric equations of a line that contains the point (2,7), we need an additional piece of information: either another point on the line or the direction vector of the line.

Let's say we have another point on the line, such as (4,9). With this information, we can proceed to write the vector equation and parametric equations.

Vector Equation: The vector equation of a line passing through points P(2,7) and Q(4,9) can be written as: r = p + t⋅d

Here, r represents the position vector of any point on the line, p represents the position vector of point P(2,7), t is a parameter that varies along the line, and d represents the direction vector of the line, which can be obtained by subtracting the position vectors of points P and Q:

d = Q - P = (4,9) - (2,7) = (2,2)

Therefore, the vector equation becomes:

r = (2,7) + t⋅(2,2)

Parametric Equations: The parametric equations express the x, y, and z coordinates of a point on the line in terms of the parameter t. In this case, since we are dealing with a 2D line, there will be only x and y coordinates.

x = 2 + 2t

y = 7 + 2t

These parametric equations represent the x and y coordinates of points on the line as the parameter t varies.

Please note that if you have a different point or specific direction vector in mind, the equations would be modified accordingly.

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The general solution is:y= c1cos(1/2t) + c2sin(1/2t)The solution to these ODEs using the “educated guess” approach has been given. Remember that every homogeneous second-order ODE has two solutions. The general solution is then expressed by combining them using the Superposition Theorem.0

When solving second-order differential equations, there are various techniques to be utilized. For the following ODEs using the “educated guess” approach, come up with solutions. Bear in mind that every homogeneous second-order ODE has two solutions, and then write the general solution by combining them using the Superposition Theorem:1. y" + 2y = 0Solution: Guess: y = e^{rt}Using the derivative product rule, we can obtain y'= re^{rt}. Thus, the second derivative of y will be y''=r^2e^{rt}.

Substituting the guess into the differential equation, we get:r^2e^{rt} + 2e^{rt}= 0e^{rt}(r^2+2)=0Thus, r^2+2=0 and r=±√2iTherefore, the general solution is:y= c1cos(√2t) + c2sin(√2t) 2. y" = 6ySolution: Guess: y = e^{rt}Using the derivative product rule, we can obtain y'= re^{rt}. Thus, the second derivative of y will be y''=r^2e^{rt}.Substituting the guess into the differential equation, we get:r^2e^{rt} = 6e^{rt}Dividing both sides by e^{rt}, we get:r^2 = 6Thus, r =±√6Therefore, the general solution is:y= c1e^√6t + c2e^-√6t3. y" - 9 = 0 (this one will only have one solution)

Solution: Guess: y = e^{rt}Using the derivative product rule, we can obtain y'= re^{rt}. Thus, the second derivative of y will be y''=r^2e^{rt}.Substituting the guess into the differential equation, we get:r^2e^{rt} - 9e^{rt}= 0e^{rt}(r^2-9)=0Thus, r^2-9=0 and r=±3Therefore, the general solution is:y= c1e^3t + c2e^-3t4. 2y"-8y = 0Solution: Guess: y = e^{rt}Using the derivative product rule, we can obtain y'= re^{rt}. Thus, the second derivative of y will be y''=r^2e^{rt}.Substituting the guess into the differential equation, we get:2r^2e^{rt} - 8e^{rt}= 0e^{rt}(2r^2-8)=0Thus, 2r^2-8=0 and r^2=4Thus, r=±2

Therefore, the general solution is:y= c1e^2t + c2e^-2t5. 8y" + 2y = 0Solution: Guess: y = e^{rt}Using the derivative product rule, we can obtain y'= re^{rt}. Thus, the second derivative of y will be y''=r^2e^{rt}.Substituting the guess into the differential equation, we get:8r^2e^{rt} + 2e^{rt}= 0e^{rt}(8r^2+2)=0Thus, 8r^2+2=0 and r^2= - 1/4 Thus, r=±(i/2)Therefore, the general solution is:y= c1cos(1/2t) + c2sin(1/2t)The solution to these ODEs using the “educated guess” approach has been given. Remember that every homogeneous second-order ODE has two solutions. The general solution is then expressed by combining them using the Superposition Theorem.

Learn more about educated guess here,An educated guess is based on past experience. How does a hypothesis express the educated guess?

A. The Educated guess here,

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Answer:

137°

Step-by-step explanation:

The opposite angles of an inscribes quadrilateral are supplementary (add up to 180°.

m∠A+43 = 180°

Subtract 43 from both sides

m∠A = 137°

Answer:

90% increase

Step-by-step explanation:

38-20 To find the increase in the wolves.

Then, you have to divide by the original amount. You will get 0.9

Multiply by 100 to get the percentage

You will get 90%

Answer:

1/6 for number 1

4/6 but 1/6 for number 2

Answer:

3

Step-by-step explanation:

So they said to find what the number will stop on and they told you that it need to be less then 5 and it land on the gray and the number 3 my favorite number is gray and it is less than 5.

Answer:Here you go

Step-by-step explanation:

Change everything into terms of sine and cosine.

Use the identities when you can.

Start with simplifying the left-hand side of the equation, then, once you get stuck, simplify the right-hand side. As long as the two sides end up with the same final expression, the identity is true.

Answer:

Infinitely Many

Step-by-step explanation:

I got it right

Answer:

-10x - 3

Step-by-step explanation:

Apply the distributive property of multiplication.  

We get:

-10x - 3

Answer:

-10x - 3

Step-by-step explanation:

i think whatever is x comes first and then everything after but say you have something like x squared, that would come first. basically x with the highest exponent comes first and you go down based one that and the numbers come after. like i said i dont really know, its been a while since i have done algebra. i hope you find my answer helpful :)

Answer:

that will be 3 gallons per minute

Step-by-step explanation:

just took it on a test

Answer:

40 inches

Step-by-step explanation:

The absolute value function that could represent this situation is:

\(|D - 42.67| = 0.002\)

The absolute value function is defined by:

\(|x| = x, x \geq 0\)

\(|x| = -x, x < 0\)

The diameter should be of 42.67 mm with an allowance of 0.002 mm. Thus, the absolute value of the difference between the diameter and of 42.67 should be of 0.002, that is:

\(|D - 42.67| = 0.002\)

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Answer:

y-2=3(x-2)

Step-by-step explanation:

point slope form:

y-y₁=m(x-x₁)

y-2=3(x-2)

Answer:

C

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

When dividing exponents, you can subtract them from eachother.

So, x^2/x = x    y^3/y^-3=y^6     z^2/z^2 = z^0 = 1

Answer:

475604-71343= 404357

hope this helps<3

Answer:

Below in bold.

Step-by-step explanation:

This is a subtraction.

  4 7 - -   0 4

-    -  1  3 4  -

 4 0 4 3 5 7

The 7 in the result is the result o 14 - 7 so the last digit of 2nd no. is 7

  4 7  -  -  0 4

-    -  1  3 4  7

 4 0 4 3 5  7

The second '-' on the top row is 7 ( from 7 - 4).   The 4 comes from the number 3 being increased by 1 ( carried form the second column).

  4 7  -  7  0 4

-    -  1  3  4  7

 4 0 4 3  5  7

The first '-' on the top row is 5 ( 5 - 1) = 4)

   4 7  5  7  0 4

-      -  1  3  4  7

  4 0 4  3  5  7

As the second digit on bottom row is 0 The first '-' on second row must be 7.

   4 7  5   7  0  4

-     7   1   3  4  7

  4 0  4   3  5  7

(a) The firm is operating in the long run, and its supply function is determined by the profit maximization condition.

(b) The firm's input demand functions can be derived from the profit function, and their degree of homogeneity is 1/2. Changes in input prices will impact the firm's input demand.

(c) The market supply function can be derived by aggregating the supply functions of all 40 firms operating in the market.

(d) Given the market conditions and demand function, the total market supply can be calculated.

(a) The firm is operating in the long run because it has the flexibility to adjust its inputs and make decisions based on market conditions. The firm's supply function is determined by maximizing its profit, which is achieved by setting the marginal cost equal to the market price. In this case, the supply function for each firm can be derived by taking the derivative of the profit function with respect to the price of output (p).

(b) The input demand functions for the firm can be derived by maximizing the profit function with respect to each input price. The degree of homogeneity of the input demand functions can be determined by examining the exponents of the input prices. In this case, the degree of homogeneity is 1/2. Changes in the input prices will affect the firm's input demand as it adjusts its input quantities to maximize profit.

(c) The market supply function can be derived by aggregating the individual supply functions of all firms in the market. Since there are 40 identical firms, the market supply function can be obtained by multiplying the supply function of a single firm by the total number of firms (40).

(d) To determine the total market supply, we substitute the given market conditions and demand function into the market supply function. By solving for the market quantity at a given market price, we can calculate the total market supply.

In conclusion, the firm is operating in the long run, and its supply function is determined by profit maximization. The input demand functions have a degree of homogeneity of 1/2, and changes in input prices impact the firm's input demand. The market supply function is derived by aggregating the individual firm supply functions, and the total market supply can be calculated using the given market conditions and demand function.

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Answer:

6-inch board is cut into two pieces. One piece is two times the length of the other. Find the length

of the shorter pi

x= -16

substitute y=0

0=1/2x+8

multiply both sides

=0=x+16

move the variable to the left

-x = 16

change the signs

final ; x = -16

Answer:

D

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

I did the test in MIddle school and its in the lesson that's where I found it so next time ur stuck on a question look at the lesson then if your stilll stuck ask brainly k?

Answer:

y = 5x + 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} } \)

with (x₁, y₁ ) = (- 1, - 2 ) and (x₂, y₂ ) = (4, 23 )

m = \(\frac{23-(-2)}{4-(-1)} \) = \(\frac{23+2}{4+1} \) = \(\frac{25}{5} \) = 5 , then

y = 5x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (4, 23 ) , then

23 = 20 + c ⇒ c = 23 - 20 = 3

y = 5x + 3 ← equation of line

Answer:

$7.1875

Step-by-step explanation:

$28.75 x .25=7.1875

Kallie will perform these tasks in the Analysis phase of the Systems Development Life Cycle (SDLC).

In the Systems Development Life Cycle (SDLC), the Analysis phase is where Kallie will create use cases, data flow diagrams, and entity relationship diagrams. This phase is the second phase of the SDLC, following the Planning phase. During the Analysis phase, Kallie will gather detailed requirements and analyze the current system or business processes to identify areas for improvement.

Use cases are used to describe interactions between actors (users or systems) and the system being developed. They outline the specific steps and interactions necessary to achieve a particular goal. By creating use cases, Kallie can better understand the requirements and functionality needed for the system.

Data flow diagrams (DFDs) are graphical representations that illustrate the flow of data within a system. They show how data moves through different processes, stores, and external entities. These diagrams help Kallie visualize the system's data requirements and identify any potential bottlenecks or inefficiencies.

Entity relationship diagrams (ERDs) are used to model the relationships between different entities or objects within a system. They depict the structure of a database and show how entities are related to each other through relationships. ERDs allow Kallie to define the data structure and relationships required for the system.

By creating use cases, data flow diagrams, and entity relationship diagrams during the Analysis phase, Kallie can gain a deeper understanding of the system's requirements, data flow, and structure. These artifacts serve as important documentation for the subsequent phases of the SDLC, guiding the design, development, and implementation processes.

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Answer:

33.99

Step-by-step explanation:

Discount = Original Price x Discount %/100

Discount = 39.99 × 15/100

Discount = 39.99 x 0.15

You save = $6.00

Final Price = Original Price - Discount

Final Price = 39.99 - 5.9985

Final Price = $33.99

Answer:

Approximate ≈ $33.99

Step-by-step explanation:

Original: 39.99

New: x

Percent Decrease: 15%

15% of 39.99 = 0.15(39.99) = 5.9985

39.99 - 5.9985 = 33.9915 = 33.99

-Chetan K

By applying dilatation and congruency theorem, it can be concluded that the distance between points R and R' is 3 units (option A).

Dilation is a transformation of a geometric shape, either becoming larger or smaller, without changing the original shape using a certain scale factor.

Two shapes are said to be congruent if a pair of corresponding sides have the same ratio and the corresponding angles have the same measure.

From the problem we obtained the following information:

QR is dilated to create Q'R' ⇒ QR // Q'R'

The dilatation factor is 1.5 ⇒ Q'R'/QR = 1.5

Now we look at the ΔTRQ and ΔTR'Q':

QR // Q'R'

∠TRQ = ∠TR'Q'

So ΔTRQ is congruent to ΔTR'Q' and TR'/TR = Q'R'/QR

Now we can calculate y using this equation:

   TR'/TR = Q'R'/QR

(6 + y) / 6 = 1.5

      6 + y = 9

            y = 3

Thus, the distance between points R and R' is 3 units.

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Answer:

750 meters

Step-by-step explanation:

Answer:

750m

Step-by-step explanation:

Distance= Speed x Time

Speed = 25m/s

Time = 30s

Distance = 25 x 30

              = 750 m