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rosijanka [135]
3 years ago
13

In 2-3 sentences describe how you use substitution to solve a system of linear equations?

Mathematics
1 answer:
OverLord2011 [107]3 years ago
8 0
You have to use the substitution method by substituting one Y value with the other
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What is the slope of the line that passes through the points (5, 4) and (13.25, -18) ?
Murrr4er [49]

Answer:

<u>Answer</u><u>:</u><u> </u><u>D</u><u>.</u><u> </u><u>8</u><u>/</u><u>3</u>

Step-by-step explanation:

Formular for slope:

[ consider points (x1, y1) and (x2, y2) ]

slope =  \frac{y_{2}  - y _{1} }{x _{2} - x _{1} }  \\

x1 » 5, y1 » 4

x2 » 13.25, y2 » -18

sloe =  \frac{ - 18 - 4}{13.25 - 5}  \\  \\  =  \frac{22}{8.25}  \\  \\ { \boxed{ \boxed{slope \:  =  \frac{8}{3} }}}

7 0
3 years ago
1. Find the slope of the line passing through (-3,-4) and (-6,-2).
r-ruslan [8.4K]

Answer:

slope = - \frac{2}{3}

Step-by-step explanation:

Calculate the slope m using the slope formula

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

with (x₁, y₁ ) = (- 3, - 4) and (x₂, y₂ ) = (- 6, - 2)

m = \frac{-2+4}{-6+3} = \frac{2}{-3} = - \frac{2}{3}

8 0
4 years ago
Read 2 more answers
What is 9 divided by 3/4
Valentin [98]
If you would like to know what is 9 divided by 3/4, you can calculate this using the following steps:

9 / 3/4 = 9 * 4/3 = 12

The correct result would be 12.
4 0
4 years ago
Read 2 more answers
Find the length of side AB.<br><br>Give your answer to 3 significant figures.<br><br>HELP NEEDED!
Vladimir [108]

Step-by-step explanation:

solve the equation with formula : SOH, CAH,TOA.

from the above, SOH is to be used to answer the question.

so, Sin∆=Opp/Hyp

∆=41°

Opposite=AB

Hyp= 13.5cm

sin 41°=AB/13.5

sin41°=0.6560

0.6560= AB/13.5

AB=13.5*0.6560

AB=8.856cm

to three significant figure AB=8.86 cm approximately

8 0
3 years ago
Y=3×+7 y=×-9 what is the solution of the equation
Aneli [31]

Since both equations are equal to y you can just make them equal to each other, like this 3x + 7 = x - 9. From there isolate the varible x on one side so that the solution will be on the other side of the equation. I'll do the steps too for you.

3x + 7 = x - 9

2x + 7 = -9

2x = -16

x = -8

Hope this helps :)

7 0
3 years ago
Read 2 more answers
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