If is the midpoint of and ,XY = 23 what is the length of ?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?

If f(x)=x+7 and g(x)=1/x what is (fog)(x)