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?

Adriver from the university of florida women’s swimming and diving team is competing in the in ncaa zone b championships

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .