Answer:
First, you want to have them at a common denominator so the easiest thing to do is multiply 3/4 by 4 because that will put it in sixteenths.
3*4=12
4*4=16
now you have 12/16+1/16
add the numerators and you have
12+1=13
13/16
I hope this is good enough:
Answer:
7 4 9
5 6 1
3 2 8
Step-by-step explanation:
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Answer:
Initial amount is 523 grams
Amount after 100 years is 52 grams
Step-by-step explanation:
General exponential function for radioactive substances is given by
A(t) = Ao(1/2)^t/t1/2
Where,
A(t) is the amount remaining after t years
Ao is the initial amount of the radioactive substance
t is the number of years required for the radioactive substance to decay to A
t1/2 is the half-life of the radioactive substance
Comparing A(t) = 523(1/2)^t/30 with the general exponential function
Initial amount (Ao) = 523 grams
A(t) = 523(1/2)^t/30
t = 100
A(100) = 523(1/2)^100/30 = 523×0.5^3.333 = 523×0.0992 = 51.8816 = 52 grams (to the nearest gram)