Answer:
6.704
Step-by-step explanation:
you will talk 1.056 and subtract it from 3.28 to get the weight of the medium one. which would be 2.224. then you would add them all up. 3.28 + 2.224 + 1.2 and it will get you 6.704
Answer:
After 80 years 432 pounds of radioactive element will be remaining.
Step-by-step explanation:
A function
models the amount of a radioactive material.
Here x = number of years taken for decay.
If
pound and
pound, then we have to calculate the time for decay.


Take log on both the sides of the equation

-0.0077x = ln(0.54)
-0.0077x = -0.616186
x = 
x = 80.02 years
Therefore, After 80 years 432 pounds of radioactive element will be remaining.
Answer:
298000:100
x : 103
cross multiply: 100x=298000 x 103
x=306,940 or 307,000
Step-by-step explanation:
Answer:
343
Step-by-step explanation: