Answer:
Step-by-step explanation:
Use
Use
Therefore:
Your question: Which equation has solution x = -3?
I'd like you to know: I couldn't find any answer that exactly answered X=-3, although there is an answer similar to. But if it was accidental, this would be the most <em>correct </em>answer.
Answer: A) 2x - 7 = -1
|Step-by-step explanation|
- 2x - 7 = -1 = x=3
- 3x + 8 = 1 = x=-7/3
- x + 8 = 10 = x=2
- 11 (2x-6) = -6 = x=30/11
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
#SPJ1
Answer:
answer is A i think im not sure
Step-by-step explanation:
i dont know ask your teacher
