If a is a 7 x 3 matrix, what is the smallest possible dimension of nul a? explain your answer.

the smallest possible dimension of Nul A is zero.

Step-by-step explanation:

The given matrix has 7 rows and 3 columns since it is a 7 x 3 matrix.

Rank Nullity Theorem:-

For any matrix A

rank A + dimension of Nul A = Column of A

Here, column of A = 3

Thus, we have

rank A + dimension of Nul A = 3

Since, it is a 7 x 3 matrix, hence the rank of this matrix can be 3.

Therefore, we have

3 + dimension of Nul A = 3

=> dimension of Nul A = 0

Therefore, the smallest possible dimension of Nul A is zero.

answer: 20

step-by-step explanation: subtract the minimum date value from the maximum data value to find the date range. in this casem the date range is 42 - 22 = 20

hope this ! : ) ~zane

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: