6.9
step-by-step explanation:
simple math really
6 1/2 times 0.6 = 3.9
but if you are just doing 6 and not 6 1/2 then the answer is 3.6
the answer is 99.
option (b) is correct
to find the solution of this system, we need to convert it into reduced row-echelon form. we have,
after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,