What is it half life, If 80% of a radioactive element

What is it half life

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If 80% of a radioactive element remains after 250 million years, then what percent remains radioactive after 600 million years? What is it's half life?

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Find the dimensions of the playground that maximixe : a rectangular playground is to be fenced and divided into two by another fence parrallel to one side of the play ground. 216 feet of fencing is used.find the dimensions of the playground that maximixe the total enclosed area.

What is it half life : If 80% of a radioactive element remains after 250 million years, then what percent remains radioactive after 600 million years? What is it's half life?

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What is it half life : If 80% of a radioactive element remains after 250 million years, then what percent remains radioactive after 600 million years? What is it's half life?

Calculate how much the nominal money supply increases : If Wachovia bank receives a $10,000 deposit, and the required reserve ratio is 0.10 (= 10%), how much can the bank loan out? Assume that Wachovia keeps zero excess reserves and only keeps the required minimum reserves.

Find the dimensions of the playground that maximixe : a rectangular playground is to be fenced and divided into two by another fence parrallel to one side of the play ground. 216 feet of fencing is used.find the dimensions of the playground that maximixe the total enclosed area.

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