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.
Learn more about half life in brainly.com/question/24710827
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The answer is 20 because if you subtract the two Q which is 40 and 20 that is your interquartile range
Answer:
156 in squared
Step-by-step explanation:
So the formulas will be stated below
Parallelogram Area= 1/2h(b1+b2)
Square Area= Bh
So first do
(4)(12+6)
(4)(18)
No need to half it bc there's the same shape at the bottom
72+18+30+36
6(3)
3x5(2)
12(3)
Answer:
B i think
Step-by-step explanation:
i think its B because all the other ones don'e look right. hope its correct. :)
Answer: 11% of students go to college
Step-by-step explanation: So simply take 36/325 since only 36 are going to college, divide and you get roughly 11%
