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zvonat [6]
2 years ago
8

Let x represent any year. Write an inequality in terms of x and 453 that is true only for values of x that represents years afte

r the year Attila died
Mathematics
1 answer:
Elis [28]2 years ago
8 0
Try google I’m sorry I don’t know
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X=12
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Find the inequality represented by the graph.
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PLEASE HELP MEH WILL ARK BRAINLIST
otez555 [7]

Answer:

a,e,c,b,d

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3 years ago
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A fossilized leaf contains 18% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as
Sati [7]

Answer: The age of the fossilized leaf is 13829 years.

Step-by-step explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  

t = age of sample

a = let initial amount of the reactant = 100

a - x = amount left after decay process = \frac{18}{100}\times 100=18  

a) for completion of half life:  

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{5600years}=0.00012years^{-1}

b) for finding the age

t=\frac{2.303}{0.00012}\log\frac{100}{18}  

t=13829years

The age of the fossilized leaf is 13829 years.

7 0
3 years ago
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