In the accompanying diagram of a unit circle, the ordered pair (x, y) represents the point where the terminal side of theta intersects the unit circle. If the terminal side of theta is indicated in pink, what is the x value in simplest form? Justify how you found the x value.

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step-by-step explanation:

step-by-step explanation: 2

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

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