If a plane goes 2000m in 10 seconds - what is it's speed?

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

How do i do this? i don’t understand

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq