Monday

October 20, 2014

October 20, 2014

Posted by **meghan** on Sunday, November 20, 2011 at 10:27pm.

- algebra -
**Steve**, Sunday, November 20, 2011 at 11:37pmafter h hours,

40 * (1/2)^(h/9)

That's because for every 9 hours, the amount is multiplied by 1/2

so, after 4 days = 96 hours, we will have

40 * (1/2)^(96/9) = .0246 mg

**Answer this Question**

**Related Questions**

Math - Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this ...

math - Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this ...

Math - Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this ...

math - Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this ...

math - The function D(h)=7e^-0.4(h) can be used to determine the milligrams D of...

Math - The function D(h)=7e^-0.4(h) can be used to determine the milligrams D ...

Math(Quick question) - The function D(h)=7e^-0.4(h) can be used to determine ...

Chemistry - a.) How much energy is emitted in each alpha decay of plutonium-234 ...

12th grade Math - word problems - #1.) The population of bacteria after t hours ...

algebra 4 - write an exponential decay model that describes the situation. one ...