A copying machine reduces a 12 cam line segment to 10.5 cm. At this setting, what would be the length of a 16 cam line segment. 12 cm.
14cm.
16cm
18cm.

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