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Lostsunrise [7]
2 years ago
9

9 × 2(3 + 5) – (10 × 12) = y

Mathematics
1 answer:
vagabundo [1.1K]2 years ago
5 0
The answer is y=24 your welcome
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X+ y + z = -3<br> 3y - Z = 4<br> 2x- y - 2z = -5
snow_lady [41]

Answer:

  • (-3, 1, -1)

Step-by-step explanation:

  • x + y + z = -3  --> (1)
  • 3y - z = 4   --> (2)
  • 2x - y - 2z = -5 --> (3)

<u>Add up (1) and (2)</u>

  • x + 3y + y + z - z = -3 + 4 ⇒ x + 4y = 1  --> (4)

<u>Double (2) and subtract from (3)</u>

  • 2x - y - 2z - 2(3y - z) = -5 - 2(4) ⇒ 2x - y - 2z - 6y + 2z = -5 - 8
  • 2x - 7y = -13 --> (5)

<u>Double (4) and subtract (5)</u>

  • 2(x + 4y) - 2x + 7y = 2 + 13 ⇒ 2x + 8y - 2x + 7y = 15 ⇒ 15y = 15 ⇒ y = 1

<u>Finding x</u>

  • x + 4(1) = 1 ⇒ x = 1 - 4  ⇒ x = -3

<u>Finding z</u>

  • -3 + 1 + z = -3 ⇒ z = -1

<u>So the answer is: </u>

  • (-3, 1, -1)

4 0
3 years ago
Plese help if you can. SCREENSHOT IS ATTACHED
xeze [42]

Step-by-step explanation:

So

WHOLE thing's rule (x,y)

(-1,6) one left 6 up

(1, -6) one right 6 down

(6,-1) six right one down

7 0
3 years ago
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What’s the correct answer
ziro4ka [17]
It’s the 2 y=0.26x+16.9
3 0
3 years ago
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What is 4x that equals 36
Amanda [17]
It would be 9, 9x4 is 36
3 0
3 years ago
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Line D passes through the points (-2,5) and (-1,-9). what is the slope of a line parallel to line D?
Agata [3.3K]
If I am not mistaken, the slope would be -14.
3 0
3 years ago
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