Strontium-90 ( 90 Sr ) is a by-product of nuclear fission with a half-life of approximately 28.9 yr., After the Chernobyl nuclear accident in 1986, large areas surrounding the site were contaminated with 90 Sr . If 10 μ g (micrograms) of 90 Sr is present in a sample, the function A ( t ) = 10 ( 1 2 ) t / 28.9 gives the amount A ( t ) ( in μ g ) present after t years. Evaluate the function for the given values of t and interpret the meaning in context. Round to 3 decimal places if necessary. (See Example 5) a. A ( 28.9 ) b. A ( 57.8 ) c. A ( 100 )
Strontium-90 ( 90 Sr ) is a by-product of nuclear fission with a half-life of approximately 28.9 yr., After the Chernobyl nuclear accident in 1986, large areas surrounding the site were contaminated with 90 Sr . If 10 μ g (micrograms) of 90 Sr is present in a sample, the function A ( t ) = 10 ( 1 2 ) t / 28.9 gives the amount A ( t ) ( in μ g ) present after t years. Evaluate the function for the given values of t and interpret the meaning in context. Round to 3 decimal places if necessary. (See Example 5) a. A ( 28.9 ) b. A ( 57.8 ) c. A ( 100 )
Solution Summary: The author explains that the remaining amount of strontium-90 is 5mu g after 28.9 year.
Strontium-90
(
90
Sr
)
is a by-product of nuclear fission with a half-life of approximately 28.9 yr., After the Chernobyl nuclear accident in 1986, large areas surrounding the site were contaminated with
90
Sr
. If 10
μ
g
(micrograms) of
90
Sr
is present in a sample, the function
A
(
t
)
=
10
(
1
2
)
t
/
28.9
gives the amount
A
(
t
)
(
in
μ
g
)
present after t years. Evaluate the function for the given values of t and interpret the meaning in context. Round to 3 decimal places if necessary. (See Example 5)
A research study in the year 2009 found that there were 2760 coyotes
in a given region. The coyote population declined at a rate of 5.8%
each year.
How many fewer coyotes were there in 2024 than in 2015?
Explain in at least one sentence how you solved the problem. Show
your work. Round your answer to the nearest whole number.
Answer the following questions related to the following matrix
A =
3
³).
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