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Setler [38]
2 years ago
8

I don’t understand, please help

Mathematics
1 answer:
Gelneren [198K]2 years ago
5 0

Answer:

cosA=root8/3 is the answer

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Answer:

1

Step-by-step explanation:

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which of the following is equivalent to the equation 2(x-3)=5(x+1)? A. 2x-3=5x+1 B. 2x-6=5x C.2x-6=5x+5 D.2x-3=5x If a= 0, which
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A water desalination plant can produce 2x10^6 gallons of water in one day. How many gallons can it produce in 8.7 days?
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3 years ago
How do you find the equation of a line with Guassian elimination given two points?
Paraphin [41]

Answer:

  The solution is similar to the 2-point form of the equation for a line:

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Step-by-step explanation:

Using the two points, write two equations in the unknowns of the equation of the line.

For example, you can use the equation ...

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The corresponding augmented matrix for this system is ...

  \left[\begin{array}{cc|c}1&x1&y1\\1&x2&y2\end{array}\right]

____

The "b" variable can be eliminated by subtracting the first equation from the second. This puts a 0 in row 2 column 1 of the matrix, per <em>Gaussian Elimination</em>.

  0 + (x2 -x1)m = (y2 -y1)

Dividing by the value in row 2 column 2 gives you the value of m:

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This value can be substituted into either equation to find the value of b.

  b = (y1) -(x1)(y2 -y1)/(x2 -x1) . . . . . substituting for m in the first equation

7 0
3 years ago
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