Posted by Anonymous on Tuesday, October 18, 2011 at 10:43pm.
A triangular pennant has two sides the same length. The third side is 9 in. shorter than either of the equal sides. The perimeter of the pennant is 57 in. How long is the shortest side?

Algebra  Ms. Sue, Tuesday, October 18, 2011 at 10:52pm
Let x = a longer side
2x + x  9 = 57
3x = 57 + 9
3x = 66
x = 22