Saved Bookmarks
| 1. |
4) What is the value of Dx forsolving simultaneous equations3x + 2y = -11 and 7x - 4y = 9 byCramer's rule?* |
|
Answer» Step-by-step explanation: D = |3 2 | |7 -4| = (-12) -14 = -26 Dx= |-11 2 | |9 -4| = -44-18 = -62 Dy= |3 -11 | |7 9| = 27- (-77) = 104 x=Dx/D= -62/-26= 31/13 y=Dy/D=104/-26= -4 x=31/13, y=-4 |
|