Could i please have some help on this? yeah im in highschool and im helping my brother and i dont know haha
9=1+c

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

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.