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4 years ago

Solve for x d(-3+x)=kx+9

Mathematics

2 answers:

vekshin14 years ago

7 0

x=3(3+d)/ d-k

Hope this helps:)

ANEK [815]4 years ago

6 0

Answer:

x = $\frac{9+3d}{d-k}$

Step-by-step explanation:

Given

d(- 3 + x) = kx + 9 ← distribute parenthesis on left side

- 3d + dx = kx + 9 ( add 3d to both sides )

dx = kx + 9 + 3d ( subtract kx from both sides )

dx - kx = 9 + 3d ← factor out x from each term on the left side

x(d - k) = 9 + 3d ← divide both sides by (d - k)

x = $\frac{9+3d}{d-k}$

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We know product of zeroes is c/a

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The length of a line segment is 7. Its end points are (1, 3) and (k, 3). Solve for k. Is there more than one solution? Explain.

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3 years ago

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3 years ago

Read 2 more answers

What is the -value in the solution to this system of linear equations?y

soldier1979 [14.2K]

The xy-value in the solution to the given system of linear equation shows that x = 2 and y = -4.

<h3>What is a system of linear equations?</h3>

Whenever two or more linear equations operate simultaneously, we create a System of Linear Equations. These equations must contain one or more similar variables in order to operate together.

When solving a system of linear equations, our objective is to simplify two equations having two variables to a single equation having one variable. Because each equation in the system includes two variables, substituting an expression for a variable is one technique to minimize the number of variables in an equation.

From the given information:

4x + 5y = -12 --- (1)

-2x + 3y = -16 ----- (2)

From equation (1)

4x+5y+(−5y) = −12 + (−5y) (Add -5y to both sides)

4x = −5y − 12

Divide both sides by 4

$\mathbf{\dfrac{4x}{4}= \dfrac{-5y-12}{4}}$

$\mathbf{x= \dfrac{-5}{4}y-3}$

Replacing the value of x in $\mathbf{ \dfrac{-5}{4}y-3}$ into equation (2); we have:

$=\mathbf{-2(\dfrac{-5}{4}y-3)+3y=-16}$

$\mathbf{\dfrac{11}{2}y+6 =-16}$

Simplifying both sides of the equation, we have:

$\mathbf{\dfrac{11}{2}y+6-6 =-16-6}$

$\mathbf{\dfrac{11}{2}y=-22}$

Cross multiply

11y = -44

y = -4

Replace the value of y = -4 into $\mathbf{x= \dfrac{-5}{4}y-3}$

$\mathbf{x= \dfrac{-5}{4}(-4)-3}$

x = 2

Learn more about systems of linear equations here:

brainly.com/question/14323743

#SPJ1

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2 years ago

Solve for each variable X and Y.

kaheart [24]

Answer:

x=5 and y=7

Step-by-step explanation:

The opposite parallel sides of any rhombus are going to be equal.

a.) Knowing this you take (x+14) and make it equal to (5x-2). Then you subtract the x from (x+14), and add the 2 from (5x+2), making the new equation 16=4x. You divide 4 by x and by 16, getting the final simplified answer of x=4.

b.) Using the same method you take 3y-3 and set it equal to (2y+4). Then you subtract the 2y from (2y+4) and add the 3 from (3y-3) to bother sides. Now you have your new equation and answer being y=7.

a.) x+14 = 5x-2

b.) 3y-3 = 2y+4

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3 years ago