A. given the following system of equations, use cramer's rule to find the value of x -x + 7y-2x=1 b. find a basis for the given subspace of r' and state its dimension: 1. all vectors of the form (a, b, a -b, a+ b). 2. all vectors of the form (a, a, a, a). 3. all vectors of the form (a, b, c, 0).

answer: approximately 206 bones

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

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

the answer for this question is a= 13,622.84

step-by-step explanation: