If you sort out the fractions better I can for sure help:)) I just need to know every fraction it’s hard to tell by what you wrote:))
A matrix is diagonal if

In other words, you want non-zero elements only when the indices of the row and the column are the same: the first element of the first row must be non zero, the second element of the second row must be non-zero, and so on. All other elements must be zero.
Answer:
x2 - 9x +20
Step-by-step explanation:
Answer:
Step-by-step explanation:
Each rows contain 12 seats.
No.of seats in 12 rows = 12 *12 = 144 seats