( 9 × 10 − 6 ) − ( 5 × 10 − 7 ) the take away signs are acutally to the powers of

True or false? a circle could be circumscribed about the quadrilateral below.

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.

Solve 2x − 1 = 11 for x using the change of base formula log base b of y equals log y over log b.