What constant would be added to the expression x2−7xx2−7x in order to make it a perfect square?

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

Triangles abd and ace are similar right triangles. witch ratio best explains why the slope of ab is the same as the slope of ac?