Find the missing side each triangle. round your answers to the nearest tenth if necessary

An arrow is shot vertically upward at a rate of 180ft/s. use the projectile formula h=−16t2+v0t to determine at what time(s), in seconds, the arrow is at a height of 420ft. round your answer(s) to the nearest tenth of a second.

What is the answer to |-2x-5|-|-4+8| and x=7

Find the cosine function that is represented in the graph.