Therefore, the bones were 6612.5 years old at the time they were discovered.
<h3><u>Half life</u></h3>
Given that the radioactive element carbon-14 has a half-life of 5750 years, and a scientist determined that the bones from a mastodon had lost 57.5% of their carbon-14, to determine how old were the bones at the time they were discovered, the following calculation must be made:
- 50 = 5750
- 100 = 11500
- 57.5 = X
- 57.5 x 11500 / 100 = X
- 6612.5 = X
Therefore, the bones were 6612.5 years old at the time they were discovered.
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Answer:
the transformation was 90° at the origin
Step-by-step explanation:
the transformation was 90° at the origin
When the numbers are either too big, or you just want a close product. Such as 1370 and 1547. Round to the nearest number then add to the other.
Answer:
282 bulbs
Step-by-step explanation:
Find how many bulbs there were by multiplying 47 by 6
47(6)
= 282
So, in the 47 boxes, there were 282 bulbs
Answer:
X=7
Step-by-step explanation:
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