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frez [133]
3 years ago
14

Please help. I’ll mark you as brainliest if correct!

Mathematics
1 answer:
balu736 [363]3 years ago
3 0

Answer: x= -1, z=2, y= -4

Step-by-step explanation:

System of equations:

-5x - 4y - 3z= 15  +

<u>-10x + 4y + 6z= 6</u>

-15x         + 3z = 21  ------>  3 (-5x + z) = 7.3

-5x + z = 7

now,

-10x + 4y + 6z= 6

2(-5x + z) + 4y + 4z = 6

14 + 4y + 4z = 6

7 + 2y + 2z = 3

2y + 2z= -4

y+z=-2

Now we were using the equation: 20x + 4y + 4z = -28

20x + 4(y+z) = 20x -8= - 28

20 x = -20

x= -1

With this we can find y and z

X=-1

-5x + z = 7

z= 2

y+z=-2

y=-4

Finally we have: x= -1, z=2, y= -4

I hope this can help you.

Thank you

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The area of a rectangular wall of a bar is 108 square feet. Its length is 6 feet longer than twice its width. Find the length an
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Answer:

Step-by-step explanation:

Let the length of the rectangle be L.

Let the width of the rectangle be W.

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diamong [38]

Answer:

x=-2.25,y=-2.25

Step-by-step explanation:

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Let us multiply the first equation by 3 while maintaining the second equation:

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Subtract the current second equation from the first one.

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Write the slope intercept equation of the function f whose graph satisifies the given conditions. The graph of f passes through
MrMuchimi
  • Let's find slope first.

  • (1,-2)
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\\ \sf\longmapsto m=\dfrac{6+2}{-8-1}

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Slope intercept form

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Answer: 26 cups will fit in a dispenser that is 30 cm high.

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