Simplify (6x2 − 3 − 5x3) − (4x3 + 2x2 − 8).
9x3 − 4x2 − 5
−9x3 + 4x2 + 5
x3 − x2 − 13x3
−x3 + x2 + 13x3

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Billie holiday sells children's clothing for sara vaughn's toddler shop. baby blankets sell for $29.99 after a markup rate based on cost of 109%. find the cost and the markup.

What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.