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koban [17]
3 years ago
15

Identify a possible first step using the elimination method to solve the system and then find the solution to the system. 2x – 3

y = 6 3x – y = 2 A) Multiply first equation by 3 and second equation by 2, solution (0, 2). B) Multiply first equation by -3 and second equation by 2, solution (0, 2). C) Multiply first equation by 3 and second equation by 2, solution (-2, 0). D) Multiply first equation by -3 and second equation by 2, solution (0, -2).
Mathematics
2 answers:
omeli [17]3 years ago
7 0
The answer is D

2x - 3y =  6  multiply this by -3
3x - y = 2 Multiply this by 2

-6x + 9y = -18
6x  - 2y = 4           Add the 2 equations:-

7y = -14   so y = -2
Substitute y = -2 in second equation:-
3x - (-2) = 2
3x = 2-2 = 0  
x = 0

solution is (0,-2)
erastova [34]3 years ago
3 0

Answer:

d

Step-by-step explanation:

The step multiply x by 2 in the first equation and subtract the second equation will NOT produce a system with the same solution. The entire equation must be multiplied by 2.

Given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions.

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Answer:

Step-by-step explanation:

A = 6(12) + ½(12)(3) = 90 in²

4 0
3 years ago
Solve 3÷x-1 - 4÷x+2=2
natita [175]
3/ x -1 - 4 / x + 2=2
I work a bit backwards so, lets try looking at it like this,
3/ X
 -4/X
what could X be to let these be positive since our outcome is positive? 
3/0=0
4/0=0
so 3/0-1= -1
-1-4/0= 0
+2= 2
so 2=2 
so now we go and fill it in to make sure
3/0-1-4/0+2=2
and it works so,
X= 0
I hope this helped some

6 0
4 years ago
Find the slope-intercept form of a line that goes through the point (-1,3) and is parallel to -x+3y=12
Aliun [14]
First, I would simplify the given equation to find the slope of the parallel line as it will be the same for the line we are looking for.
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Slope= 1/3

Our equation now looks close, but we need the intercept.
y=(x/3)+B

Plug in the given point to find the intercept.
3=(-1/3)+B
4/3=B

Plug all the known values into the equation to complete the slope-intercept form.
y=(x/3)+4/3
6 0
3 years ago
A 6 3/4 inch candle burns down in 9 hours. How far has it burned in 5 1/2 hours? Use the drop down menu to state your answer as
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Answer:3/4

Step-by-step explanation:sorry if it’s wrong

8 0
3 years ago
-15______= -3 what it this answer?
erik [133]

There are a few ways to get -15 to equal -3 one is put +12

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Or putting /5

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(If i am doing this wrong please explain the question a little more.

3 0
4 years ago
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