The diameter of lead in a mechanical pencil must be within 0.01 millimeters of 1 millimeter. select the inequality that represents the allowable diameter of lead that can be used in the pencil.

Problem number 26 of the rhind papyrus says: find a quantity such that when it is added to of itself the result is a 15. the modern day equation that models this problem is x + x = 15. what is the solution to the equation? x = 10 x = 12 x = 15 x = 30