Describe the dimensions of a triangular prism that has a surface area between 550 square inches and 700 inches.

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?