A. If B is a basis for a subspace H, then each vector in H can be written in only one way as a linear combination of the vectors in B.
b. If B= {V1, Vp} is a basis fora subspace H of Rn, then the Correspondence X →[X]B makes H look and act the same as IRE.
c. The dimension of Nul As the number of variables in the equation Ax=0.
d. The dimension of the column space of A is rank A.
e. If H is a p-dimensional subspace of Rn, then a linearly independent set of p vectors in H is a basis for H.

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Step-by-step explanation:

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

1. minimum

2. 6400

3. eight

hope this !