Solve the system of equations 9
x
+
5
y
=
41
9x+5y=41 and
x
+
y
=
9
x+y=9 by combining the equations.

15/16 as a decimal rounded to the nearest hundredth

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

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?