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Mandarinka [93]
3 years ago
14

Find the equation given the following two points (7,19) and (9,29)

Mathematics
2 answers:
Dmitrij [34]3 years ago
8 0
9(92) hope that helps
ra1l [238]3 years ago
3 0

Answer:

y=mx+bx

Step-by-step explanation:

You could either use (7,19) or (9,29) to find the equation....

Y=mx+b

You plug in you x and y, then we are trying to solve for b

x=7, y=19

19=m(7)+b

7m+b=19

-7m          -7m

b= 19 - 7m

Y=7m+1

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Consider the linear system of equations y=2/5x-1 and 2x-3y+1=0 graph the system of equations
nlexa [21]

We can see that the lines intersect at: (-5,-3)

Step-by-step explanation:

Given system of equations is:

y = \frac{2}{5}x-1\ \ \ \ Eqn1\\2x-3y+1 = 0\ \ \ \ Eqn2

Lets convert the second equation in the same form as the first equation

2x-3y+1 = 0

Adding 3y on both sides

2x-3y+1+3y = 0+3y\\2x+1 = 3y\\3y= 2x+1

Dividing both sides by 3

\frac{3y}{3} = \frac{2x+1}{3}\\y = \frac{2}{3}x+\frac{1}{3}\\

The graph of equation can be plotted using manual graphing or any online graphing calculator

We will use the Desmos online graphing calculator to graph the equations (Picture attached)

We can see that the lines intersect at: (-5,-3)

Keywords: Graphing, linear equations

Learn more about linear equations at:

  • brainly.com/question/750742
  • brainly.com/question/7419893

#LearnwithBrainly

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3 years ago
What is the slope of the line​
bija089 [108]

Answer:

The slope of the line is 1/2x

Step-by-step explanation:

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3 years ago
Which of the following points is a solution for this system of equations:
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Answer:

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Step-by-step explanation:

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Resolve the expression <img src="https://tex.z-dn.net/?f=%5Cfrac%7B%28x-2%29%7D%7B%28x%5E%7B2%7D%20%2B1%29%28x-1%29%5E%7B2%7D%20
Llana [10]

The partial fraction expansion will look like

(<em>x</em> - 2)/((<em>x</em> ² + 1) (<em>x</em> - 1)²) = (<em>ax</em> + <em>b</em>)/(<em>x</em> ² + 1) + <em>c</em>/(<em>x</em> - 1) + <em>d</em>/(<em>x</em> - 1)²

Get everything in terms of a common denominator, and compare the numerators on both sides:

<em>x</em> - 2 = (<em>ax</em> + <em>b</em>) (<em>x</em> - 1)² + <em>c</em> (<em>x</em> ² + 1) (<em>x</em> - 1) + <em>d</em> (<em>x</em> ² + 1)

Expand the right side:

<em>x</em> - 2 = (<em>ax</em> + <em>b</em>) (<em>x</em> - 1)² + <em>c</em> (<em>x</em> ² + 1) (<em>x</em> - 1) + <em>d</em> (<em>x</em> ² + 1)

<em>x</em> - 2 = (<em>a</em> + <em>c</em>) <em>x</em> ³ + (-2<em>a</em> + <em>b</em> - <em>c</em> + <em>d</em>) <em>x</em> ² + (<em>a</em> - 2<em>b</em> + <em>c</em>) <em>x</em> + <em>b</em> - <em>c</em> + <em>d</em>

<em />

Match up the coefficients and solve the resulting system of equations:

<em>a</em> + <em>c</em> = 0

-2<em>a</em> + <em>b</em> - <em>c</em> + <em>d</em> = 0

<em>a</em> - 2<em>b</em> + <em>c</em> = 1

<em>b</em> - <em>c</em> + <em>d</em> = -2

==>   <em>a</em> = -1, <em>b</em> = -1/2, <em>c</em> = 1, <em>d</em> = -1/2

So the expansion into partial fractions is

(<em>x</em> - 2)/((<em>x</em> ² + 1) (<em>x</em> - 1)²) = (-<em>x</em> - 1/2)/(<em>x</em> ² + 1) + 1/(<em>x</em> - 1) - 1/(2 (<em>x</em> - 1)²)

… = -(2<em>x</em> + 1)/(2 (<em>x</em> ² + 1)) + 1/(<em>x</em> - 1) - 1/(2 (<em>x</em> - 1)²)

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3 years ago
Please help me and please do what it says to do
Genrish500 [490]

Multi ting a number is like adding the number that many times.

Repeated addition would be adding 3/4 to itself 4 times:

3/4 + 3/4 + 3/4 + 3/4 = 12/4 = 3

Then multiplication method:

3/4 x 4 = 12/4 = 3

4 0
3 years ago
Read 2 more answers
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