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Use a graphing calculator or spreadsheet software to solve 4x + y + z = 1
8x – 4y – 7z = 2
5y + 9z = 3
A. (0.5, -3, 2)
B. (1, 2, 3)
C. (-3, 0.5, 2)
D. (0.5, 3, 2)
Stacey Warren - Expert brainly.com
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these are 3 planes, yep:
\(4x + y + z = 1 \\
8x – 4y – 7z = 25 \\
0 x + y + 9z = 3\)
any idea what the "answer" means ? :p
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It's algebra 2
im in geometry but i can try
im sorrry, idk this :(
Hey it's all good. I don't know this either.
But thanks for trying anyway
I think you are supposed to do something like this:
import numpy as np
a = np.array( [ [4,1,1], [8,-4,-7], [0,5,9] ] )
b = np.array([1,2,3])
x = np.linalg.solve(a, b)
Connected to pydev debugger (build 141.1899)
[ 0.5 -3. 2. ]
it says: "graphing calculator or spreadsheet software "
it certainly assumes some knowledge
if that is lacking, we can have a crack at solving just 2 of them:
\(4x + y + z = 1; \\
8x – 4y – 7z = 2\)
\(8x – 4y – 7z = 2 \\
5y + 9z = 3\)
[0.5, -3, 2] is correct. I just guessed and got 100%