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Question: Fossil dating radioactive beryllium is sometimes used to date fossils found in deep-sea sediment. The amount of radioactive material x satisfies
dx/dt = kx
Suppose that 10 units of beryllium are present in a living organism and that the half-life of beryllium is 4.6 million years. Find the age of a fossil if 20% of the original radioactivity is present when the fossil is discovered.
In a? five-card poker? hand, what is the probability of being dealt exactly one three and no picture cards?
A fish tank is 1 yd long, 1.5 ft high, and 15 in wide. Determine the volume of water in the fish tank in cubic feet.Determine the weight of the water in pounds. One cubic foot of water weighs about 62.5 pounds.
The probability of a transistor failing between t = a months and t = b months is given by ca?b e-ct dt,
Find the work done for one rotation-from t = 0 to t = 2π. Show your set up. but please use WolframAlpha to evaluate any resulting integrals.
Find the fundamental matrix and use this to determine the general solution
What values of x can be used in a function? If you wanted to graph a function, what values of x would you choose and why?
Find a recurrence relation for the amount of money that will be in an account after n years if $1,000,000 is deposited in an account yielding 9% annually.
An election with 4 candidates (A, B, C, and D) and 132 voters is to be decided using the plurality method. After 120 ballots have been recorded, A has 26 votes, B has 18 votes, C has 42 votes, and D has 34 votes. What is the smallest number of the..
ABCDEF is a regular hexagon with centre O which is also the origin of position vectors. Find the position vectors of the vertices C, D, E, F in terms of the position vectors a, b of A and B.
Express the perimeter of the plot as a function of the width. What is the domain of this function?
The Department of Industrial Engineering of a university has one Xerox machine. Users of this machine arrive at the rate of one every 20 ± 2 minutes and use it.
Describe the economic issues and describe the special needs (e.g., health) of the population being served.
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