What was the name of the treatise in which euclid compiled all the existing geometric knowledge, along with some of his own observations, to provide a logical structure and progression for geometry?

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30