What times itself equals 7

The determinant of the given matrix is 8+4xz-8y. Therefore, the determinant depends on the variable.

What is determinant?

Determinants are considered as a scaling factor of matrices. They can be considered as functions of stretching out and the shrinking in of the matrices. Determinants take a square matrix as the input and return a single number as its output.

The given matrix is

The determinant of 3×3 matrix can be find using

|C|= a₁(b₂c₃−b₃c₂)−b₁(a₂c₃−a₃c₂)+c₁(a₂b₃−a₃b₂)

Now, 1(2×4-z×0)-0(x×4-y×0)+4(x×z-y×2)

= 8+4xz-8y

The determinant of the given matrix is 8+4xz-8y. Therefore, the determinant depends on the variable.

Learn more about the determinant here:

brainly.com/question/29574958.

#SPJ5

Answer:

det = 8

Step-by-step explanation:

1(8 - 0) - x(0 - 0) + y(0 - 0)

= 8

Answer:

We know that:

" Elapsed time is the time or difference between a beginning time and an ending time ".

Now the two different methods to find the elapsed time is:

Method 1:

Subtract 2:30 directly from 2:58. 

2:58 - 2:30 = 0:28

Hence, the elapsed time is 28 minutes.

Method 2:

Round 2:58 to 3:00, subtract 2:30 from 3:00, and at the end subtract 2 to get the desired time(2:58 + 2 = 3:00)

( Since it is easy to calculate the whole numbers).

2:58 is approximately 3:00

3:00 - 2:30 = 30 min

30 min - 2 min = 28 min.

Hence, elapsed times is 28 minutes.

Answer:

Step-by-step explanation:

hello :

x^3-4x^2+5x-20 = x²(x-4)+5(x-4) = (x-4)(x²+5)