Find the common ratio for this geometric sequence. 243,27,1/3,1/27 a. 1/9 b 3 c. 1/3 d 9

What is negative 3/9 times negative 2/8 ?

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.

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.