Radiologically, half lives describe the amount of time it takes for half the amount of the radioactive substance to decay. If you had 100g of a radioactive substance with a half life of one week, in seven days, only 50g would remain, and after another week, only 25g.
Fifteen days contains three half lives since the half life is 5 days long. Divide the starting amount by 2 for each half life that passes.
600g - 300g (1 HL) - 150g (2 HL) - 75g (3 HL)
So, only 75g of Bismuth-210 would remain after 15 days.
Answer:
-1/3
Step-by-step explanation:
Y2-Y1 plug in 5-4. 1
---------- ------- = --
X2-X1 plug in 0-3 -3
$7.19
Because 15% equals 0.15 so 47.96x0.15=$ 7.19
Answer:
96
Step-by-step explanation:
48÷2 = 24
24 x 4 = 96
good luck
Answer:
x = 96
Step-by-step explanation:
3/8x = 36
You have to multiply both sides of the equation by the inverse of the fraction to cancel it out.
(8/3)(3/8x) = (36)(8/3)
x = 96