Mathematics, 05.12.2020 21:10 eduardo60
A certain element has a half life of 2.5 billion years. a. You find a rock containing a mixture of the element and lead. You determine that 20% of the original element remains; the other 80 % decayed into lead. How old is the rock? b. Analysis of another rock shows that it contains 65% of its original element; the other 35% decayed into lead. How old is the rock?
Answers: 2
Mathematics, 21.06.2019 18:50
Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5
Answers: 1
Mathematics, 21.06.2019 19:30
The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?
Answers: 1
Mathematics, 21.06.2019 20:30
Kai walked one and two-thirds of a mile on saturday and four and one-sixth of a mile on sunday. how many miles did kai walk?
Answers: 1
A certain element has a half life of 2.5 billion years. a. You find a rock containing a mixture of t...
History, 08.12.2020 14:30
Mathematics, 08.12.2020 14:30
Mathematics, 08.12.2020 14:30
Health, 08.12.2020 14:30
Mathematics, 08.12.2020 14:30
Mathematics, 08.12.2020 14:30
French, 08.12.2020 14:30
English, 08.12.2020 14:30
History, 08.12.2020 14:30
Mathematics, 08.12.2020 14:30
English, 08.12.2020 14:30