The half-life of Palladium-100 is 4 days. After 20 days a sample of Palladium-100 has been reduced to amass of 4 mg. What was the initial mass (in mg) of the sample?

What is the mass 4 weeks after the start?

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

The diagram shows corresponding lengths in two similar figures. find the area of the smaller figure. a. 14.4 yd2 b. 24 yd2 c. 26.4 yd2 d. 28

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?