Um atleta salta de um trampolim situado a 6,5 m do nível da água na piscina, subindo 0,7 m acima do mesmo e, a partir dessa posição, desce verticalmente. Desprezando a resistência do ar, determine a velocidade que o atleta salta do trampolim e o tempo total de movimento; aproximadamente e respectivamente. *

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

What is the value of x when x + 7 = 21?