A motorboat travels 244 kilometers in 4 hours going upstream and 665 kilometers in 7 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?

In each bouquet of flowers, there are 2 roses and 3 white carnations. complete the table to find how many roses and carnations there are in 2 bouquets of flowers.

Which of the following is the correct ratio for converting kilograms to grams

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.