Set this up as
10 = 40 (1/2)t/28
and solve for t in years.
10/40 = (1/2)t/28
log(0.25) = (t/28) log(0.5)
t = 28 log(0.25) / log(0.5) years = 56 years
Test the answer:
56 years = 2(28 years) = 2 half-lives, so the remaining amount should be 1/2 of 1/2 of the initial amount, i.e. 1/4 of the initial amount, and 10 mg = 1/4 of 40 mg.
Answer:
Islam is the dominant religion in North Africa, practiced by over 90% of the population in some places.
Explanation:
Black slaves who wgere imported from africa
Answer:
Britain
Explanation:
Following the Kandyan Wars, the island was united under British rule in 1815. Armed uprisings against the British took place in the 1818 Uva Rebellion and the 1848 Matale Rebellion. Independence was finally granted in 1948 but the country remained a Dominion of the British Empire until 1972.
Answer:
im sorry i cant help you out
Explanation:
hopfully you will find someone who can