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Furkat [3]
3 years ago
9

A geologist in South America discovers a

Mathematics
1 answer:
diamong [38]3 years ago
7 0

Answer:

This is a radioactive decay / half-life problem.

Initial amount of C 14 = 100% Present Amount = 57%

k = .0001  (that value should be negative)

Nt = No * e^ (k*t)

You need to solve that equation for "time" (equation attached)

time = natural log (Ending amount / Starting Amount) / k

time = natural log (57% / 100%) / -.0001

time = ln (.57) / -.0001

time = -.56211891815 / -.0001

time = 5,621.2 years    (age of the bird skeleton)

These problems are quite complicated but I think I know this pretty well.

Need to know more? Visit my website (it's on the graphic).

Step-by-step explanation:

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when 30 bolts are tested for hardness, their indexes have a standard deviation of 3.9. Test the claim that the standard deviatio
HACTEHA [7]

Answer:

nebraskan Vulunnter na bumaril sa tatlong piliponong sundalo na siyang naging hudyat ng digmaan

Check your spelling or try different keywords

Ref A: D4EA49C383DC4782B921C6733B0FE57B Ref B: SG1EDGE0220 Ref C: 2020-12-08T02:28:46Z

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5 0
2 years ago
Complete this statement:
klasskru [66]

Answer:

45x^3a+27xa^2= 9xa(5x^2+3a)

Step-by-step explanation:

Given:

45x^3a+27xa^2= 9xa

We need to complete this Statement.

By Solving the above equation we get;

We will take some common factor out so we will get;

45x^3a+27xa^2= 9xa(5x^2+3a)

Hence the Complete statement is 45x^3a+27xa^2= 9xa(5x^2+3a)

5 0
2 years ago
What is the unit rate of this question? y=2x
mylen [45]

,..........................

5 0
2 years ago
My answers were wrong please help
ValentinkaMS [17]

Answer:

from the top down

y=7

y=4

y=3

y=4

y=7

Step-by-step explanation:

y=(-2)²+3

y=4+3

y=7

y=(-1)²+3

y=1+3

y=4

y=0²+3

y=0+3

y=3

y=1²+3

y=1+3

y=4

y=2²+3

y=4+3

y=7

hope this helps :)

3 0
3 years ago
What about this one?????
nikitadnepr [17]

Answer:

B) {14,7}

Step-by-step explanation:

If the x-axis increases by 2 and the y-axis increases by 1 then think of it as the y-axis will always be HALF of the x-axis. In this case, 7 is half of 14 (14÷2=7). :)

3 0
2 years ago
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