Cesium-137 has a decay constant of 0.0231 (a 30-year half-life). If you start with 15 pounds of cesium-137, how much will still be there 30 years later? Round to the nearest tenth.

N = 7.5 pounds

Step-by-step explanation:

Formula for the radioactive decay is given by,

Here, N = Final amount

N₀ = Initial amount

λ = Decay constant

t = Duration of decay

Now we can substitute the values from the given question,

N =

N =

N = 15(0.5)

N = 7.5 pounds

idk

step-by-step explanation:

maybe try   if it is work from a book, if not try

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: