Simplify the following polynomial expression. (5x4-9x3+7x-1)+(-8x4+4x2-3x++5x-1)( 2x-7)

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

Write a description of each inequality. 1. -5a + 3 > 1 2. 27 - 2b < -6 (this < has a _ under it) 3. 1/2 (c + 1) > 5 (this > has a _ under it)

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i