Suppose a 5x8 coefficient matrix for a system has pivot columns. Is the system consistent? Why and Why not?

Step-by-step explanation:

All the 5 rows of the coefficient matrix (since it is of order 5×8) will have a pivot position. The augmented matrix obtained by adding a last column of constant terms to the 8 columns of the coefficient matrix will have nine columns and will not have a row of the form [0 0 0 0 0 0 0 0 1]. So the system is consistent.

i think it is 70

step-by-step explanation:

i believe the answer is the polygon, heptagon.