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Sophie [7]
3 years ago
9

Solve the inequality. Show your work. |4r + 8| ≥ 32

Mathematics
3 answers:
saw5 [17]3 years ago
7 0

|4r + 8| ≥ 32

4r + 8 ≥ 32         or         4r + 8 ≤ -32      <em> inside of absolute value could be + or -</em>

4r       ≥ 24         or          4r       ≤ -40       <em>subtracted 8 from both sides</em>  

r       ≥  6           or            r       ≤ -10         <em>divided both sides by 4</em>

Graph: ←---------------- -10        6 ------------------→

Interval Notation: (-∞, -10] U [6, ∞)

finlep [7]3 years ago
3 0

Okay here are the steps to solving this inequality:

First- <u><em>Break down the problem into these 2 equations</em></u>

               4r + 8 ≥ 32    →    - (4r + 8) ≥ 32


Second- <u>Solve the 1st equation: </u><u><em>4r + 8 ≥ 32</em></u>

                    r ≥ 6


Third- <u>Solve the 2nd equation: - (4r + 8) ≥ 32</u>

                    r ≤ -10


Lastly- <u>Collect all solutions </u>

<h2>           r ≥ 6   and   r ≤ -10</h2>

       

                         

                         

lord [1]3 years ago
3 0

Okay here are the steps to solving this inequality:

First- <u><em>Break down the problem into these 2 equations</em></u>

               4r + 8 ≥ 32    →    - (4r + 8) ≥ 32


Second- <u>Solve the 1st equation: </u><u><em>4r + 8 ≥ 32</em></u>

                    r ≥ 6


Third- <u>Solve the 2nd equation: - (4r + 8) ≥ 32</u>

                    r ≤ -10


Lastly- <u>Collect all solutions </u>

<h2>           r ≥ 6   and   r ≤ -10</h2>

       

                         

                         

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