1. in the figure below, triangle qrt, triangle rsa. and triangle qst are scalenenote picture mot drawn scaieif m qrs 37 and m tos 33 what is m tor? 11090end study session
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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

source:  

answer: i believe it is c

step-by-step explanation:

because 5+4=9 so it would be 3^9

answer: chelsea has 55 brushes

step-by-step explanation:

5 x 11 = 55

5 + 55 = 60