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Use the following to answer the next two questions The rate of radioactive decay is often described using the concept of half life – the time it takes for the amount of radioactivity to decay to half its initial amount. Radioactive cobalt-60 is often used in radio thearapy in hospitals. The half life of cobalt -60 is 5.2 years. The decay of cobalt-60 can be represents by the formula A(t) = A_0(1/2)^(t/5.2) If the initial amount of cobalt – 60 is 150 grams, then the number of years, to the nearest tenth, it would take to reduce the cobalt – 60 to 30 grams is To the nearest tenth of a gram, the number of grams remaining from a 250 gram sample of cobalt – 60 after 24 years is The value of the expression 2log_9 3 – log_5 10 + log_5 2, to the nearest whole number, is

          Use the following to answer the next two questions

The rate of radioactive decay is often described using the concept of half life – the time it takes for the amount of radioactivity to decay to half its initial amount.
Radioactive cobalt-60 is often used in radio thearapy in hospitals. The half life of cobalt -60 is 5.2 years. The decay of cobalt-60 can be represents by the formula A(t) = A_0(1/2)^(t/5.2)

If the initial amount of cobalt – 60 is 150 grams, then the number of years, to the nearest tenth, it would take to reduce the cobalt – 60 to 30 grams is __________

To the nearest tenth of a gram, the number of grams remaining from a 250 gram sample of cobalt – 60 after 24 years is __________

The value of the expression 2log_9 3 – log_5 10 + log_5 2, to the nearest whole number, is

Use the following to answer the next two questions

The rate of radioactive decay is often described using the concept of half life – the time it takes for the amount of radioactivity to decay to half its initial amount.
Radioactive cobalt-60 is often used in radio thearapy in hospitals. The half life of cobalt -60 is 5.2 years. The decay of cobalt-60 can be represents by the formula A(t) = A0(1/2)^(t/5.2)

If the initial amount of cobalt – 60 is 150 grams, then the number of years, to the nearest tenth, it would take to reduce the cobalt – 60 to 30 grams is

To the nearest tenth of a gram, the number of grams remaining from a 250 gram sample of cobalt – 60 after 24 years is

The value of the expression 2log9 3 – log5 10 + log5 2, to the nearest whole number, is

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