Simplify the following algebraic expressions 2y+6/3y+9

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14