65.9k views
14 votes
5|x +9| < 10



x< ?
x> ?

User Wulong
by
4.0k points

2 Answers

1 vote

Answer:

x<−7 and x>−11

Explanation:

Let's solve your inequality step-by-step.

5(|x+9|)<10

Step 1: Divide both sides by 5.

5(|x+9|)/5 < 10/5

|x+9|<2

Step 2: Solve Absolute Value.

|x+9|<2

We know x+9<2 and x+9>−2

x+9<2(Condition 1)

x+9−9<2−9(Subtract 9 from both sides)

x<−7

x+9>−2(Condition 2)

x+9−9>−2−9(Subtract 9 from both sides)

x>−11

Answer:

x<−7 and x>−11

User Tammi
by
4.1k points
10 votes


\huge\textsf{Hey there!}


\huge\textbf{Equation:}


\mathbf < 10


\huge\textbf{Solving:}


\mathbf < 10


\huge\textbf{DIVIDE 5 to BOTH SIDES:}


\mathbf(5


\huge\textbf{Simplify it!}


\mathbfx + 9


\huge\textbf{Solve the absolute value:}


\mathbf


\huge\textbf{Possibly we know that:}


\mathbf{x + 9 < 2 \ and\ we\ know\ that \ x+9 > -2}


\huge\textbf{Solving for:}


\mathbf{x + 9 < 2}


\huge\textbf{SUBTRACT 9 to BOTH SIDES:}


\mathbf{x + 9 - 9 < 2 -9}


\huge\textbf{Simplify it!}


\mathbf{x < -7}


\huge\textbf{Solving for:}


\mathbf{x + 9 > -2}


\huge\textbf{SUBTRACT 9 to BOTH SIDES:}


\mathbf{x + 9 - 9 > -2 - 9}


\huge\textbf{Simplify it!}


\mathbf{x > -11}


\huge\textbf{Answer(s):}


\huge\boxed{\mathsf{x < -7\ or\ x > -11}}\huge\checkmark


\huge\text{Good luck on your assignment \&amp; enjoy your day!}

~
\frak{Amphitrite1040:)}

User Gingo
by
3.9k points