Evaluate the following expression for x= 15. 1/5x-12

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

Mr. thompson is on a diet. he currently weighs 260 pounds. he loses 4 pounds per month. what part of the story makes the relationship not proportional?

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.