What is the answer to | 2x + 9 | = 15

x  =  3 &  −

12

Step-by-step explanation:

Find all solutions for  x  by breaking the absolute value into the positive and negative components.

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

|2x+9|=15  Solve Absolute Value.

|2x+9|=15

We know either 2x + 9 = 15 or 2x + 9 = −15

2x + 9 = 15(Possibility 1)

2x + 9 − 9 = 15 − 9(Subtract 9 from both sides)

2x=6  (Divide both sides by 2)

x=3  

2x + 9 = −15(Possibility 2)

2x + 9 − 9 = −15 − 9(Subtract 9 from both sides)

2x=−24  (Divide both sides by 2)

x=−12

x=3 or x=−12

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.