Let a be an m times n matrix. explain why the equation upper a bold x equals bold b has a solution for all b in set of real numbers r superscript m if and only if the equation upper a superscript upper t baseline bold x equals bold 0 has only the trivial solution.

answer: kljdcdhjbdlchjad oac apoich a

step-by-step explanation:

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

step-by-step explanation: