hector81 hector81
  • 29-04-2021
  • Mathematics
contestada

The half-life of radium is 1690 years. If 80 grams are present now, how much will be present in 210 years?

Respuesta :

ashish411208765 ashish411208765
  • 29-04-2021

Answer:

75.03

Step-by-step explanation:

1690 40

210 x

1690x = 210 * 40

x = (210 * 40)/ 1690

x = 4.97041420118

80 - 4.97 = 75.03

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