PLEASE HELP: Rectangle FGHJ has diagonals FH and JG that intersect at M. If FJ=−3x+5y, FM=3x+y, GH=11, and GM=13, find the values of x and y.
A. x=3, y=4

B. x=7, y=8

C. x=4, y=3

D. x=8, y=7

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

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