Question

What thee NOT equivalent to the following inequality?
a>3
A. 2a-3>3
B. 3a-2>11
C. 4a+1>11
D. 5a+2>13

Help I will medal you and fan you!!!

Answer 1

@whpalmer4

Answer 2

\[2a-3>3\]What do you get if you add \(3\) to both sides of the inequality?

Answer 3

We never learn what inequality because this is a pretest

Answer 4

@whpalmer4

Answer 5

okay, inequalities work just like equalities, with one important difference. If you multiply or divide both sides of an inequality by a negative number, you must change the direction that the inequality sign points. Otherwise, it's just like solving a regular equation.

\[2a-3 > 3\]If we add \(3\) to both sides:
\[2a-3+3 > 3+3\]\[2a>6\]Now if we divide both sides by \(2\) which is the number in front of \(a\) (we call that a coefficient):
\[\frac{2a}{2} > \frac{6}{2}\]\[a>3\]so that first inequality is equivalent to \(a > 3\)

Answer 6

see how that works?