. In the problems below (just as in the lecture), the four subspaces associated to a matrix are the column space, the nullspace (or Kernel), the row space, and the left nullspace. Answer the following: (a) If a 3 × 4 matrix has rank 3, what are the dimensions of the four subspaces? (b) If a 7 × 9 matrix has rank 5, what are the dimensions of the four subspaces?

Step-by-step explanation:

. In the problems below (just as in the lecture), the four subspaces associated to a matrix are the column space, the nullspace (or Kernel), the row space, and the left nullspace. Answer the following: (a) If a 3 × 4 matrix has rank 3, what are the dimensions of the four subspaces? (b) If a 7 × 9 matrix has rank 5, what are the dimensions of the four subspaces?

answer: approximately 206 bones

i hope this u out a branlist and a would be greatly appreciated :

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b