Perform the indicated operation. 2 −3
4 −1
−
−2 7
11 0
=
a b
c d
a = , b = , c = , d =

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Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.

6cm10 cma conical paper cup has dimensions as shown in the diagram. how much water can the cup hold when full?