One fourth of a bottle of juice is split between two friends what fraction of the juice will each friend get right in the division sentence and answer in simplest form

What is sin 7x/4 ? i need on this urgent trig

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?