Evaluate the expression when a=4 and x= -4.

-a +5x

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

I’m stuck on this equation, anyone got the answer?

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.