Line A: y=1/2x + 2 Line B: y= -1/2x + 7
Line C: y= -2x + 4
Line D: y= 1/2x + 5/4
Which lines are perpendicular?

A) A and B
B) A and C
C) B and C
D) A and D

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.

How to simply and write the answer n a whole number

How do you write 600 as a product of its prime factors (index! )