Ao final do ano de 2020, a Escola Beatriz de Quadros Leme tinha um total de 800 alunos, no conselho de classe do quarto bimestre, a quantidade de alunos aprovados foi de 680. Qual a porcentagem de alunos reprovados?

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Gia opened two savings accounts at two different banks. one account earns an annual 3.4% simple interest, and the other earns half as much. if she deposited $500 in each account, how much total interest will she have earned in 5 years? a. $34.00 b. $25.50 c. $51.00 d. $510.00

The height above the ground (in feet) of a ball dropped from the top of a 30-foot-tall building after t seconds is given by the polynomial: ? 16t^2+30 what is the height of the ball after 1/2 second?