Matrix
What is the dimension? [ 2 4 6]
1x3
A system of linear equations is called _________. When it has no solution.
a. Dependent
b. Independent
c. Inconsistent
d. Consistent
c.
What is the dimension? [ 3 7 ]
[9 2]
[4 7]
3x2
A solution is written as ( x,y,z) which is known as
Ordered triple
Which of the following is a key difference between ( REF) and (RREF)
a.) In REF, leading entries must be 1 but in RREF they can be any number of.
b.) In RREF, every column containing a lead 1 must have only zeros above And below it , this is not required in REF.
c.)In REF, rows of all zeros must be at the top but in RREF , they can be anywhere in the matrix.
d.) there is no difference
b.)
Figure out which method to use and Solve for x and y in decimal form
3x+2y=4
5x-2y=8
( 1.5, -0.25)
What’s the augmented matrix.
-2x+z=-6 + 8y
7y-3z+8=5x
-4y+=9-7z
[-2 -8 1 | -6]
[-5 7 -3 | -8]
[0 -4 7 | 9]
AC invests 10,000 in equipment for his small business. Each unit costs $8 to produce and sells it for $15. Write and solve the system of equations to determine how many units must be sol to break even.solve by any method
( 1428.57, 21428.57)