Find the value of x. Then find the measure of each labeled angle. x = 20; the labeled angles are 80º and 100º.

x = 30; both labeled angles are 120º.

x = 20; both labeled angles are 90º.

step-by-step explanation:

where is the question is there is a formula or is there not one

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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