SOLUTION: ABCD is an isosceles trapezoid with bases AB̅̅̅̅ and DC̅̅̅̅, and median EF̅̅̅̅. If AC = 4y - 9 and DB = y + 12, what is the value of y?

Algebra ->  Parallelograms -> SOLUTION: ABCD is an isosceles trapezoid with bases AB̅̅̅̅ and DC̅̅̅̅, and median EF̅̅̅̅. If AC = 4y - 9 and DB = y + 12, what is the value of y?      Log On


   



Question 1191756: ABCD is an isosceles trapezoid with bases AB̅̅̅̅ and DC̅̅̅̅, and median EF̅̅̅̅.
If AC = 4y - 9 and DB = y + 12, what is the value of y?

Answer by greenestamps(13203) About Me  (Show Source):
You can put this solution on YOUR website!


AC and BD are the diagonals of the trapezoid.

In an isosceles trapezoid, the lengths of the two medians are equal.

4y-9 = y+12

Solve using basic algebra.