SOLUTION: If parallelogram ABCD is a rectangle and AC=2y+7 and BD=3y-4 What is the value of y

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Question 1129977: If parallelogram ABCD is a rectangle and AC=2y+7 and BD=3y-4 What is the value of y
Found 2 solutions by MathLover1, MathTherapy:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Since it is a rectangle, the 2 opposite sides must be equal+length
AC+and BD are opposite
therefor:
2y%2B7=3y-4...........minus 2y+ from both sides
7=y-4...........add 4 to both sides
11=y

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

If parallelogram ABCD is a rectangle and AC=2y+7 and BD=3y-4 What is the value of y
AC and BD are DIAGONALS of the rectangle, not sides. 

The diagonals of a rectangle are congruent so set them equal to each other and solve for y.