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alexandr402 [8]
3 years ago
10

Solve the system of equations using elimination. 2x – 3y = 9 and 3x + 2y = –6

Mathematics
2 answers:
Zinaida [17]3 years ago
7 0
We will multiply the given equations so that the x component is cancels out upon addition...

-3(2x-3y=9)+2(3x+2y=-6)  perform indicated operations.

(-6x+9y=-27)+(6x+4y=-12)  which is equal to:

13y=-39  divide both sides by 13

y=-3, making <span>2x-3y=9 become:

2x-3(-3)=9

2x+9=9  subtract 9 from both sides

2x=0  divide both sides by 2

x=0

So the solution to the system is the point (0,-3)...

You can check with the two original equations...

2(0)-3(-3)=9, 9=9

3(0)+2(-3)=-6, -6=-6</span>
Whitepunk [10]3 years ago
5 0
(0,-3) is the point which is your system of equations using elimination answer
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vovikov84 [41]

Answer:

B

Step-by-step explanation:

To evaluate (f ○ g)(- 4), first evaluate g(- 4) then substitute this value into f(x)

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3 years ago
3 x + 2 y = − 6.<br><br> help me find the y and the x<br><br> x y<br> -4<br> 0<br> 0 –3
Maru [420]

Answer:

x = 0 and y = -3

Step-by-step explanation:

3 (0) = 0

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3 years ago
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Tasya [4]
Given that there is no any option to choose I am going to help you according to the concepts of Congruent Triangles. Two triangles are congruent if and only if:

1. They have:exactly the same three sides
2. exactly the same three angles.

<span>There are five ways to find if two triangles are congruent but in this problem we will use only two.


First Answer:

<u>ASA criterion:</u> </span><em>A</em><span><em>ngle, side, angle</em>. This means that we have two triangles where we know two angles and the included side are equal.</span>

So:

If ∠BAC = ∠DEF and \overline{AC}=\overline{DE}

<em>Then ΔABC and ΔEFD are congruent by ASA criterion.</em>

Second answer:

<u>SAS criterion:</u> <em>S</em><span><em>ide, angle, side</em>. This means that we have two triangles where we know two sides and the included angle are equal.
</span>
If \ \overline{AC}=\overline{DE} \ and \ \overline{BC}=\overline{DF}

<em>Then ΔABC and ΔEFD are congruent by SAS criterion.</em>

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3 years ago
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OverLord2011 [107]
60 is 15
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2 years ago
2<br> Solve for k.<br> -8k+ 6 = –10k + 10<br> k
Sever21 [200]

Answer:

k=2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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