Solve.A fossilized leaf contains 15% of its normal amount of carbon 14. How old is the fossil? Use 5600 years as the half-life of carbon 14 and round to the nearest year.

A. 21,839 yr
B. 15,299 yr
C. 35,828 yr
D. 1311 yr


Answer: B

Mathematics

You might also like to view...

Use division to express the fraction in the form quotient + .

A. + 
B. + 
C. + 
D. 3x + 

Mathematics

Use the given graph to find the x-intercept and the zero of the function.

A. (0, 0); 0 B. (1, 0); 1 C. (6, 1); 6 D. (6, 0); 6

Mathematics

Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?

A. $0.75 B. $2.00 C. -$3.00 D. $3.00

Mathematics

Find the real solutions of the equation.x2 + 5x -  = 12

A. {25, -25}
B. {5}
C. {3}
D. {}

Mathematics