Complete the table for the radioactive isotope.
Isotope
Half-life(years)
Initial Quantity
Amount after 1000 years
24,100
---- 

A. Initial Quantity:
B. Initial Quantity
C. Initial Quantity
D. Initial Quantity
E. Initial Quantity


Answer: E

Mathematics

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A. ; 4
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A.
B.
C.
D.

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Solve the problem.Glenn and Paula want to dig an irrigation channel for their garden. Together it takes them  to dig an appropriately sized irrigation channel. If Paula can dig the channel by herself in  how long would it take Glenn to dig the channel by himself? Round to the nearest tenth, if necessary.

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With your calculator set to radian mode and polar graphics capability, graph the following function in the window specified.r = ? + 3 cos ?, 0 ? ? ? 3?, [-4, 4] by [-4, 4]

A.

B.

C.

D.

Mathematics