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OlgaM077 [116]
3 years ago
11

Pick One... To solve the system of equations using the (Elimination, Substitution) method, I would (Multiply Equation 1 by -1 an

d add the equations together, Multiply equation 2 by -3 and add the equation together, Replace X in equation 1 with -x+15, Replace Y in equation 1 with -x+15, or Multiply equation 2 by -1 and add the equations together) in order to solve for Y.

Mathematics
1 answer:
inessss [21]3 years ago
8 0
Elimination, Multiply the second equation by -1, then add the equations together.
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X/3-4=-7<br><br> please help me solve
Vanyuwa [196]
In order to solve this we need to get x by itself on one side.

We need o start by adding across the 4 so that we get:

x/3 = -7 + 4 = -3

We then need to multiply both sides by 3 to get a singular x:

x = -3 * 3 = -9
5 0
3 years ago
Read 2 more answers
If you can, please leave an explanation so I can learn how to do it rathe than just copying
castortr0y [4]

Answer:

Point-Slope: y+1=-5/7(x-5)

Slope Intercept: y=-5/7x+ 2 4/7

Standard: -5x+7y=18

Step-by-step explanation:

<u>Slope: -5/7</u>

Point slope is when the equation is in y-y1=m(x-x1) form.

I used the point (5,-1) but it really <u>doesn't matter</u> which one

Substitute it into (x1,y1)

y--1=-5/7(x-5)

y+1=-5/7(x-5) **2 minus signs is equal to 1 plus sign**

Slope-intercept is when the equation is in y=mx+b form.

y=-5/7x+b

To solve for b, plug in one of the points (again, I choose to use (5,-1)

(-1)=-5/7(5)+b

-1=-25/7+b is equal to asking -1=-3 4/7+b

b=2 4/7

Standard form is when it is in Ax+By=C

We'll covert from slope intercept to standard: y=-5/7+ 2 4/7

y=-5/7x+ 2 4/7 is the same as y=(-5/7x+ 18/7)

7y=5x+18 **Multiply both sides by 7, the common denominators**

-5x+7y=18 **Subtract 5x from both sides**

<em>Sorry it took it while to get everything down but I hope this helps~</em>

6 0
2 years ago
How do you find the area of a traizoid
BaLLatris [955]

[(base + base)*high]/2

5 0
3 years ago
HELP ME PLEASEEEEEEEEEEEE
olga nikolaevna [1]

Answer:

L

Step-by-step explanation:

The first number is always x-coordinate. And amongst all only J and L has positive x-coordinates. With J y-coordinate is also positive so it should be L

5 0
2 years ago
The question is above in the picture​
anzhelika [568]
Yea his answer is right ^^
6 0
3 years ago
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