Answer:
C. (4,7), (-7, -4), (6, 8), (-7, 6)
Step-by-step explanation:
There are no repeating numbers. For example, in answer A, 8 is repeated, (8, -1) and (8, 7)
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Answer: 49929 years ago
Step-by-step explanation:
Radiocarbon dating is a method that provides objective age estimates for carbon-based materials that originated from living organisms
To calculate the time, we will use exponential formula
R% = e^ -kt
Where t = number of years
0.25/100 = e^- 0.00012t
Log both sides with natural logarithm
Ln0.0025 = lne^-0.00012t
-5.9915 = -0.00012t
t = 5.9915/0.00012
t = 49928.9 years
Approximately t = 49929 years
For 3. he answer is a
for 4 the answer is two