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mamaluj [8]
3 years ago
5

Hello, help plz :) :) :)

Mathematics
2 answers:
NeTakaya3 years ago
6 0

Answer:

27

Step-by-step explanation:

z = 9, so we plug in 9 for z.

9 * 3 = 27

Mashutka [201]3 years ago
4 0
It’s 27 because you do 3x9
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4 years ago
Write an equation of the line passing through (-6, 1) that is perpendicular to the line 2x -5y = 2
Bess [88]

Answer:

y= -5/2 x + 14 (point slope form)

2y+5x=28 (standard form)

Step-by-step explanation:

Perpendicular lines met the following condition

m1*m2=-1 (the product of their slopes is -1)

To obtain m2, the slope of our desired line lets first re arrange the equation of the first line. 2x-5y=2, so. 2x-2=5y.

Isolating y, leads the following, result: y= 2/5 x - 2/5

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m2 is =-5/2

The equation of our desired line is the following

y=mx+b, we have m, which is -5/2, but still need to find value for b.

Lets now evaluate the above equation in the given point (-6,1).

1=-6 * -5/2 + b.

b=14.

Now we can say the equation that our desired line is

y= -5/2 x + 14 (point slope form)

Or... If we group variables 'x' and 'y' together

y+5/2 x = 14, we want integer coefficients, so lets multiply this expression by 2, to obtain the following:

2y+5x=28

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3 years ago
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3 years ago
What's the slope of the line shown
Sphinxa [80]

Answer:

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Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
3.
Sloan [31]

Answer:

  y = 6x +1

Step-by-step explanation:

To write the slope-intercept form equation for a line, you need to know the slope and the y-intercept. These can be found from their respective formulas.

__

<h3>slope</h3>

The slope of a line between points (x1, y1) and (x2, y2) is given by the formula ...

  m = (y2 -y1)/(x2 -x1)

For points (-1, -5) and (0, 1), the slope is ...

  m = (1 -(-5))/(0 -(-1)) = 6/1

  m = 6

<h3>y-intercept</h3>

The y-intercept is the value of y where the line crosses the y-axis. That axis is where x = 0. There is a formula that can be used to find the y-intercept from the slope and a point on the line:

  b = y -mx . . . . . y-intercept of line with slope m through point (x, y)

However, one of the given points is already the y-intercept: (0, 1). It tells you b=1.

<h3>equation</h3>

The slope-intercept equation is ...

  y = mx +b

  y = 6x +1

8 0
2 years ago
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