Respuesta :
Answer:
t ≥ 10
Step-by-step explanation:
-3t + 9 ≥ -21
-3t ≥ -30
Dividing by -3 on both sides;
t ≥ 10
The solution to the given inequality is; t ≤ 10
Inequalities
We are given the inequality as;
-3t + 9 ≥ -21
Using subtraction property of equality, we subtract 9 from both sides to get;
-3t + 9 - 9 ≥ -21 - 9
-3t ≥ -30
Using division property of equality, divide both sides by -3 to get;
t ≤ -30/-3
The sign changed because when we divide an inequality by a negative number, the sign will change.
Thus;
t ≤ 10
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