The time t (in hours) that it takes a group of volunteers to build a
playground varies inversely with the number n of volunteers. It takes
a group of 10 volunteers 12 hours to build the playground. How long
would it take a group of 15 volunteers?

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

This figure consists of a rectangle and semicircle. what is the perimeter of this figure use 3.14 for pi 60.84m 72.84m 79.68m 98.52m