Book
Maths Puzzle
Age Problem
How old is a bone that has lost 25 percent of it's carbon 14?
(The half-life of carbon 14 is 5,750 years)
Read Solution (Total 0)
Book Other Question
Problem: 2logx = 2 solve for x
1. 4x+3y=1, x=1-y
2. 2x-y=6, -x+y=-1
3. 6x-y=3, 4x-2y=-2
4. 2x+3y=7, x=1-4y
5. 2x+3y=6, x-3y=-15
6. 7x-5y=4, y=3x-4
7. 2y-5x=-1, x=2y+5
8. 4x+3y=1, 3x+4y=10
9. 6x-5y=3, 4x+3y=21
10. x+y=4, 3x+4y=10
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.