SOLUTION: A quadrilateral has four sides. Quadrilateral ABCD has three sides that have equal measures. The measure of the fourth side is 8.0 cm longer than each of the other sides. If the pe

Algebra ->  Real-numbers -> SOLUTION: A quadrilateral has four sides. Quadrilateral ABCD has three sides that have equal measures. The measure of the fourth side is 8.0 cm longer than each of the other sides. If the pe      Log On


   

Question 174711: A quadrilateral has four sides. Quadrilateral ABCD has three sides that have equal measures. The measure of the fourth side is 8.0 cm longer than each of the other sides. If the perimeter of the quadrilateral is 28.0 m, find the measure of each side using the correct number of significant digits.
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
let x = the measure of each of the 3 equal sides and x+8 be the measure of the 4th side of the quad
:
x+x+x+(x+8)=28
:
4x=20
:
highlight%28x=5.0%29cm
3 equal sides measure highlight%285.0%29 cm each
4th side is x%2B8=5%2B8=highlight%2813.0%29 cm