para instalar un carrusel se requiere cubrir con arena una cuarta parte del terreno circular de 40m de diametro. si para cubrir 1m┬▓ se utilizan 50kg ┬┐que cantidad de arena se necesita?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

Which of the following scenarios demonstrates an exponential decay