Question

Plz help me get the best answer

Answer 1

a ≤ 0

Explanation:

`-(1)/(2)a-4\geq-4\qquad\text{add 4 to both sides}\\\\-(1)/(2)a-4+4\geq-4+4\\\\-(1)/(2)a\geq0\qquad\text{change the signs}\\\\(1)/(2)a\leq0\qquad\text{multiply both sides by 2}\\\\2\!\!\!\!\diagup^1\cdot(1)/(2\!\!\!\!\diagup_1)a\leq(2)(0)\\\\a\leq0`