A plane, parallel to the center of the sphere, passes through the sphere at a distance of 20 cm from the center. The radius of the circular cross section is 15cm. What is the radius of the sphere?

Which system of linear inequalities is graphed? can somebody pleasssse

How do i get my dad to stop making me gargle his pickle i want my mom to gargle my pickle not my dads

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.