A school has two wings each of which is a rectangle or prism the school district is planning to instill air conditioning in the
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ANSWER: x = 1 or x = -6
Ok done. Thank to me :>
Ok done. Thank to me :>
Answer:
Step-by-step explanation:
this is the same concept basically as simplifying into
. You can see that the denominator is in front of the radical and that any numbers in the numerator are the power of the number underneath.
If the radio active isotope has the half life of 24100 years, then the initial quantity is 2.16 grams
The half life in years = 24100
Consider the quantity of the radio active isotope remaining
y =
When t = 1000 the y = 1.2
y = C/2 when t = 1599
Substitute the values in the equation
C/2 =
Cancel the C in both side
1/2 =
Here we have to apply ln to eliminate the e terms
ln (1/2) = 24100k
k = ln(1/2) / 24100
k = -2.87× 10^-5
To find the initial value we have to substitute the value of k and y in the equation
1.2 = Ce^{1000 × -2.87× 10^-5}
C = 1.2 / e^(-0.0287)
C = 2.16 gram
Hence, the initial quantity of the radioactive isotope is 2.16 gram
Learn more about half life here
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