<PRE><B>Question 825444</B>
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x = dogs
y = cats
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y = 2x
0.6x + 0.5y = 144
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put the system of linear equations into standard form
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2x - y = 0
0.6x + 0.5y = 144
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copy and paste the above linear system in standard form into this matrix-method solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = dogs = 90
y = cats = 180
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system matrix
2 -1
0.6 0.5
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inverse of system matrix
0.3125 0.625
-0.375 1.25
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determinant of system matrix = 1.6
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Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
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Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
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Solve systems of linear equations up to 4-equations 4-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php</PRE>