can any one help me in class 10 mathmatics in my insta preparing for see exam. my insta I will comment in ​

Need on this geometry question. explain how you did it.

Find the amplitude of a sinusoidal function that models this temperature variation

Randy and trey take turns cleaning offices on the weekends. it takes randy at most 4 hours to clean the offices. it takes trey at most 6 hours to clean the offices. what is the greatest amount of time it would take them to clean the offices together? 2.4 hours 2.5 hours