batmannn1516

06.06.2020 • 

Mathematics

A sample of 400 g of radioactive lead-210 decays to polonium-210 according to the function A(t) = 400 € -0.052, wheret is time in years. Find the amount of radioactive lead remaining after (a) 3 y. (b) 8 y. (c) 15 yr. (d) Find the half-life.

(a) The amount of radioactive lead remaining after 3 yr will be

(Round to the nearest integer as needed.)

Ответ:

alyssamiller401

20.05.2022

Mathematics

---

So the factors are
79=2*5*7
100=2*2*5*5

2*5 is common to both so that is the greatest common factor (10)

10 is the answer

---

0,0(0 оценок)