Stefanie swam four-fifths of a lap in the morning and seven-fifteenths of a lap in the evening. What fraction of a lap did Stefanie swim the entire day?

The sixth grade art students are making a mosaic using tiles in the shape of right triangles. each tile has leg measures of 3 centimeters and 5 centimeters. i f there are 200 tiles in the mosaic what is the area of the mosaic.

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?