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3 years ago

Find a solution to the following system of equations. -3x+3y=-9 -3x+y=7 PLZ help anyone

Mathematics

1 answer:

N76 [4]3 years ago

7 0

Answer:

Step-by-step explanation:

Ok. In order to answer this question, there are multiple ways in which we can approach this. The way I am going to do is substitution. Isolate the y in the second equation which gives you y=7+3x.

Now what you want to do is to plug in that equation into the first one.

-3x+3(7+3x)=-9.

-3x+21+9x=-9

6x=-30

x=-5,

Ok, now you need to solve the y variable.

So plug in the x variable into the second equation and solve for y.

y=-8

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6-8x=7x-10x-24 solve for x

lana66690 [7]

Answer:

x = 6

Step-by-step explanation:

Let's solve your equation step-by-step.

6−8x=7x−10x−24

Step 1: Simplify both sides of the equation.

6−8x=7x−10x−24

6+−8x=7x+−10x+−24

−8x+6=(7x+−10x)+(−24)(Combine Like Terms)

−8x+6=−3x+−24

−8x+6=−3x−24

Step 2: Add 3x to both sides.

−8x+6+3x=−3x−24+3x

−5x+6=−24

Step 3: Subtract 6 from both sides.

−5x+6−6=−24−6

−5x=−30

Step 4: Divide both sides by -5.

−5x/-5 = -30 /-5

x=6

4 0

3 years ago

Select from the drop-down menu to correctly complete the statement about the given figures.

kompoz [17]

I belive the answer should be similar

3 0

3 years ago

Read 2 more answers

A snail moves 2.34 inches per minute. At that rate (speed), How many inches will it travel in 12 minutes?

Maksim231197 [3]

Answer:

28.08 is the answer

Step-by-step explanation:

7 0

2 years ago

Which relationship describes angles 1 and 2?

PilotLPTM [1.2K]

1 and 2 are supplementary angles. The sum of their measures is equal to 180 degrees.

I hope this helps. =)

5 0

4 years ago

What is an equation for the line that passes through (-2,-3) with a slope of -1/2?

Crazy boy [7]

Answer:

Step-by-step explanation:

To write the equation of a line use the point slope form of a line substituting m = -1/2 and the point (-2,-3).

$y -y_1 = m(x-x_1)\\y --3=-\frac{1}{2}(x--2)\\y+3 = -\frac{1}{2}(x+2)$

Convert to standard form by applying the distributive property and rearranging the terms.

$y + 3 = -\frac{1}{2}(x+2)\\y+3 = -\frac{1}{2}x -1\\2y + 6 = -x -2\\x+2y + 6 = -2\\x + 2y = -8$

The equation x +2y = -8 is the same equation as 4y + 2x = -16 just doubled----> 2x + 4y = -16

8 0

3 years ago