Step-by-step Answer
PAGE: 514SET: ExercisesPROBLEM: 15
Please look in your text book for this problem Statement

The perimeter of the triangle  inches.

The length of the each side is inches.

The perimeter P is the sum of the each side.

           (Substitute 49 for P)

                    (Add: )

     (Subtract 30 from each side)

              (Apply additive inverse property: )

                    (Apply additive identity property: )

                           (Subtract: )

The unknown side length is 19 inches.

The lengths of sides are 19, 12 and 18 inches. So, the triangle is Scalene triangle.


"I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!"

June Barnett

"Your site is amazing! It helped me get through Algebra."


"My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful."

Dan Pease

Simply chose a support option

My status

JOIN US ON: is not affiliated with any Publisher, Book cover, Title, Author names appear for reference only