Because S represents the investment in savings, and we’re told that the investment in the certificate of deposit (CD) is $1,000 more than the investment in savings, the investment in the CD is therefo...Because S represents the investment in savings, and we’re told that the investment in the certificate of deposit (CD) is $1,000 more than the investment in savings, the investment in the CD is therefore S + 1000, as indicated in the table. If the perimeter of the triangle is 39 inches, find the lengths of the sides of the triangle. If the perimeter of the triangle is 51 inches, find the lengths of the sides of the triangle.