What is the length of the altitude of the equilateral triangle below? 873 30-
83
60" 90°
475
60"
415
O
A. 4
O
B. 413
C. 144
D. 12/3
E. 12
O F. 240

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