Respostas

2014-04-24T00:13:18-03:00
45=5.2t²
2t²=45/5
2t²=9
t²=9/2
t²=4,5
t=raiz quadrada de 4,5
2014-04-24T00:33:11-03:00
45 = 10t²
45/10 = t²
4,5= t²
√4,5 = t