solve by determinants
a.x+y+z=0
3x-y+2z=-1
2x+3y+3z=-5
b. x+2z=1
2x-3y=3
y+z=1
c. x+y+z=10
3x-y=0
3y-2z=-3
d. -8x+5z=-19
-7x+5y=4
-2y+3z=3
e. -x+2y+z-5=0
3x-y-z+7=0
-2x+4y+2z-10=0
f. 1/x+1/y+1/z=12
4/x-3/y=0
2/y-1/z=3
3. Solve the following system of equations.
5x- y+ z= -4
2x+ 2y-3z= -6
x-3y+ 2z= 0
Select the correct choice below:
A. There is one solution. The solution is
( ).
B. There are infinitely many solutions. The solutions
( ,z)
C. There is no solution.
4. The total number of restaurant-purchased meals that the
average person will eat in a restaurant, in a car, or at home in
a year is 150. The total number of these meals...