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olga nikolaevna [1]
3 years ago
13

Using the elimination method to solve this system of equations problem 3x + 4y = 12 and -3x - 2y = 6, name its solution. *

Mathematics
1 answer:
xeze [42]3 years ago
8 0

Answer: x=-8 and y=9

Step-by-step explanation:

3x +4y=12 ( This can be equation 1)

-3x-2y=6 ( This can be equation 2)

Equation 1 + equation 2 = 2y=18

                                            y= 18÷2

                                            y=9

Substitute 9 for y in 3x+4=12

3x+4y=12

3x+4(9)=12

3x+36=12

3x= 12-36

3x=-24

x= -24÷3

x= -8

Therefore x=-8 and y=9

Mark me as the brainiest answer

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Answer:

Equation: (2x+5)4=(2x+8)3

X: 2

Perimeter: 36

Step-by-step explanation:

You would multiply 2x+5 and 4 because there are four sides to a square, so the perimeter of the square would be 8x+20. This would go same for the triangle, making the perimeter 6x+24.

So 8x+20=6x+24 is your new equation. Then, you do the opposite of the order of operations, and add or subtract first. It would be easiest to subtract 20 and 6x from both sides.

That leaves you with 2x=4. Dividing 2 by both sides means x=2

You can plug this in to prove if it is correct.

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Will has 20 pounds of apples he makes to back to apple sauce that he's 4 pounds each one back to apple butter that use a 6 pound
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Answer:

The equation representing pounds of apples will has left x=20-4-6-3.

Will has left with 7 pounds of apples.

Step-by-step explanation:

Given:

Total pounds of apple = 20 pounds.

Pounds of apple used for apple sauce = 4 pounds

Pounds of apple used for apple butter = 6 pounds

Pounds of apple used for making juice = 3 pounds

We need to write the equation to represent pounds of apples will has left.

Solution:

Let us assume pounds of apples will has left be 'x'.

So we can say that;

pounds of apples will has left can be calculated by subtracting Pounds of apple used for apple sauce and Pounds of apple used for apple butter and Pounds of apple used for making juice from Total pounds of apple.

framing in equation form we get;

x=20-4-6-3

Hence The equation representing pounds of apples will has left x=20-4-6-3.

On Solving the above equation we get;

x=7\ pounds

Hence Will has left with 7 pounds of apples.

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