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Ratling [72]
3 years ago
15

What is the value of w in the solution to the following system of linear equations ?

Mathematics
2 answers:
marshall27 [118]3 years ago
5 0

Answer:

-1/6

Step-by-step explanation:


Solve one equation for one variable  v  then plug it into the other and solve for the other variable w .

5v+4w=1\\5v = 1-4w\\v = \frac{1-4w}{5}

Now plug v into the second equation:

\\3(\frac{1-4w}{5}) - 6w = 2\\3(\frac{1-4w}{5}) = 2+ 6w \\\frac{3-12w}{5} = 2+ 6w\\3-12w = 10+ 30w\\-42w = 7\\w = \frac{7}{-42} \\w =-\frac{1}{6}

DochEvi [55]3 years ago
5 0

Answer:

-1/6

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Now expand the brackets with the formula:

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The formula for finding the x coordinate of a vertex in a quadratic equation is:

x = \frac{-b}{2a}

Plug known variables in:

x = \frac{-(-8)}{2(-1)}

x = \frac{8}{-2}

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Now, to find the y coordinate, plug this variable back into the quadratic equation:

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4 0
3 years ago
Solve the equation. Write a justification for each step. <br>5m-3=22
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Step-by-step explanation:

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  1. take 3 the other side by doing the opposite operation

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