Me answer this. riddle: i am the most basic building block in geometry. i look like a dot but you actually can't see me, unless you "see" me in your mind. although i am nothing, 2 of me makes a 1-dimensional being and 3 of me, not on the same line, make a 2-dimensional being! what am i?

Arrange these numbers from least to greatest 3/5 5/7 2/9

Miguel’s teacher asks him to color 4/8 of his grid. he must use 3 colors: red, blue, and green. there must be more green sections than red sections. how can miguel color all the sections of his grid to follow all the rules

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .