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Blababa [14]
3 years ago
6

Solve by elimination -8x+8y=19-4x+4y=8

Mathematics
1 answer:
Harrizon [31]3 years ago
6 0

Answer: the first one :x=y+ −19 /8

the second one:  x=y−2

Step-by-step explanation:

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8 0
2 years ago
On a number line there are six spaces. On the first is the number 2, on the last space is the number 42, on the third space is x
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5 0
3 years ago
<img src="https://tex.z-dn.net/?f=x1%2B2x2-x3%3D3%2C%202x1%2Bx2-2x3%3D1%2C%203x1%2B4x2-5x3%3D5" id="TexFormula1" title="x1+2x2-x
o-na [289]

Answer: x1 = 0; x2 = 5/3; x3 = 1/3

x1 + 2x2 - x3 = 3 => 2x1 + 4x2 - 2x3 = 6

                                2x1 + x2 - 2x3 = 1

=> 4x2 - x2 = 5

⇔ 3x2 = 5

⇔ x2 = 5/3

with x2 = 5/3, we have: x1 - x3 = 3 - 10/3 = -1/3

                                        3x1 - 5x3 = 5 - 4.5/3 = -5/3

=> x1 = 0

    x3 = 1/3

Step-by-step explanation:

7 0
2 years ago
Siri round each number to the place of the underlined digit 7.158 The underlined number is five
monitta
The answer is 7.160 !!
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3 years ago
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3 0
3 years ago
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