
Mark M. answered 03/03/21
Tutor
5.0
(278)
Mathematics Teacher - NCLB Highly Qualified
0.30 = e-0000121t
ln 0.30 = -0.000121t
-1.20 ≈ -0.000121t
9950 ≈ t
Yalyla S.
asked 03/03/215. Prehistoric cave paintings were discovered in a cave. The paint contained 30% of the original carbon-14. The decay rate for carbon-14 is −0.000121. Estimate the age of the paintings.
Mark M. answered 03/03/21
Mathematics Teacher - NCLB Highly Qualified
0.30 = e-0000121t
ln 0.30 = -0.000121t
-1.20 ≈ -0.000121t
9950 ≈ t
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