Can someone please answer this

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 length and width of a 84.5 square foot rug? will mark

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?