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strojnjashka [21]
4 years ago
10

How do you do the elimination method on these equations: 4x-3y=18 and 2x+y=4

Mathematics
1 answer:
kupik [55]4 years ago
8 0

Answer:

(1,2)

Step-by-step explanation:

We arbitrarily set out to eliminate x and then find y.

Keep 4x-3y=18 as is, but multiply 2x+y=4 by -2.  We get -4x - 2y = -8.

Combine:

4x - 3y = 18

-4x - 2y = -8

-------------------

       -5y = -10

Solving for y, we get y = 2.  

To find x, substitute y = 2 into either of the given equations.  If we choose the second equation, we get 2x + (2) = 4, so that 2x = 2 and x = 1.

The solution is (1, 2).

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The answer is on the table.
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6 0
3 years ago
Step 1: Subtract 3 from both sides of the inequality
Tpy6a [65]

Answer:

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Step-by-step explanation:

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first step, subtract 3 from both sides:

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3 years ago
1+1 show explanation
Snezhnost [94]

Answer:

1+1 = 2

1+1 = Window

1+1 = 11

Step-by-step explanation:

For solution One: get one apple. Then another apple. Finally u will have 2 apples

For the second solution: imagine the no. 1, just a straight line. 1+1 with the equal sign, one line on top/one line on bottom. Forms a window.

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8 0
4 years ago
What is the answer to 10x - 5y = 30 because I keep looking and everyone is giving different answers.
11Alexandr11 [23.1K]

Answer:

6

Step-by-step explanation:

10 x 6 = 60

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60 - 30 = 30

5 0
3 years ago
Please help! I’m struggling!
11111nata11111 [884]

Answer:

87 degrees

Step-by-step explanation:

The triangle with the angles 79 and 15, we can find the last value because all angles in a triangle add up to 180. So, 180-79-15= 86 degrees for the angle of the triangle.

Because the 86 degree angle is complimentary, or when added up to the adjacent angle, is 90 degrees (we see that little box sign), that means that 90-86=4 degrees for the upper triangle in the angle that isn't the question mark. Now that we know 2 values for the top triangle, we can solve for the third value by subtracting those two from 180.

180-89-4=87 degrees. Hope this helps!

3 0
2 years ago
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