You have two parents, four grandparents, eight great-grandparents, and so forth.
(a) if all y...
Mathematics, 05.12.2019 21:31 hidalgo8429
You have two parents, four grandparents, eight great-grandparents, and so forth.
(a) if all your ancestors were distinct, what would be the total number of your ancestors for the past 42 generations (counting your parents' generation as number one)? (hint: use the formula for the sum of a geometric sequence.)
(b) assuming that each generation represents 25 years, how long (in years) is 42 generations? yr
(c) the total number of people who have ever lived is approximately 10 billion, which equals 1010 people. compare this fact with the answer to part
(a). what can you deduce? (select all that apply.)
1. there could not have been 42 generations in my line of ancestry.
2. people have been living on earth for less than 1,100 years.
3. some ancestors on different branches of the family tree must be the same.
4. some of my ancestors must not have had children.
Answers: 3
Mathematics, 21.06.2019 17:10
Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.
Answers: 3
Mathematics, 21.06.2019 18:00
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Mathematics, 21.06.2019 20:50
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