Why did you post this again?
https://www.jiskha.com/questions/1752036/Two-fireworks-are-set-off-simultaneously-but-from-different-altitudes-The-height
Two fireworks are set off simultaneously but from different altitudes. The height y in feet of one is
represented by y=-16t^2+120t+10, where t is the time in seconds. The height of the other is represented by y=-16t^2+60t+310. After how many seconds are the fireworks at the same height? ___________ What is
that height? ______________ i really dont get how to do this someone tell me how
1 answer