For a system of vectors U = {(1,2, 6); (0, -1, -5);(2,3,7); (1,0,-4) } .
a. Find the number of dimensions and a basis W of the subspace generated by the vector system U .
b. Find the parameter k to
u = (2,3, k^2+1) is a linear combination of W , and it follows that [ ]W
u .

idk

step-by-step explanation:

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.