A large spotlight has a parabolic cross section that is 10 feet wide at the opening and 3.1 feet deep at its vertex. How far from the vertex is the focus?

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

Which letters from the table represent like terms? a and b b and c a and d b and d