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How do you solve #-9a>= -45#?

Answer 1

Eli Assouline

#a <= 5#

#-9a >= -45#

You must divide both sides by #-9# in order to isolate #a#.

Nevertheless, the sign reverses when an inequality is divided by a negative number.

(-45)/9# <= #(-9a)/-9#

#a <= 5#

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Answer 2

Eva Abramson

To solve the inequality -9a ≥ -45, divide both sides by -9, remembering to reverse the inequality sign since you're dividing by a negative number:

(a ≤ \frac{{-45}}{{-9}})

This simplifies to:

(a ≤ 5)

Therefore, the solution is (a) is less than or equal to 5.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

How do you solve #-9a&gt;= -45#?

How do you solve #-9a>= -45#?