The original price is c. Then the grocery bill will be: c - 0.05c = 0.95 c. You can also say since the beggining that 5% disscount implies 0.95 factor, which leads to c * 0.95 = 0.95c. Sorry if it’s wrong
Decay rate for Radium-228 is 0.01205
Step-by-step explanation:
The half life of radium-228 is 5.75 years. We need to find the decay rate for radium.
The formula used is:

Where N₀ = amount of radioactive particles at time = 0
N_t = amount of radioactive particles are time (t)
λ = rate of decay constant
t = time
We are given half life so,
=0.5
t= 5.75 years
We need to find λ
Putting values in formula and solving:


So, Decay rate for Radium-228 is 0.01205.
Keywords: Decay Rate
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Answer:
A
Step-by-step explanation: got 100 on it
It is the last one have a great day!
Answer:
40+5x=62.50
Step-by-step explanation:
8 friends 5 dollars is 40 dollars. Each popcorn bag is 2.5
40+5(2.5)=62.5
40+12.5=62.5