The scale on a map is 1 cm for every 400 km. If Maine and Japan are 22 cm apart on the map, what is the distance between Maine a
2 answers:
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Answer:
- D = -2
- Dx = -4
- Dy = -2
Step-by-step explanation:
<u>System Determinant</u>
The determinant of the system is the determinant of the matrix of coefficients:
<u>X Determinant</u>
This is the determinant of the matrix with the x-coefficients replaced by the constants.
<u>Y Determinant</u>
This is the determinant of the matrix with the y-coefficients replaced by the constants.
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This problem didn't ask, but the solution is ...
x = Dx/D = -4/-2 = 2
y = Dy/D = -2/-2 = 1
(x, y) = (2, 1)