18. Find mZY.
X
(6x-23)
Y
(4x + 9)
Z

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.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

An electrician cuts a 136 foot long piece of cable. one piece is 16 feet less than 3 times the length of the other piece. find the length of each piece