What is the value of (-1/2)-4? O -16

O -1/16

O 1/16

O 16

need help fast pls?
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What is the pattern in the values as the exponents increase?

When the ball has traveled a distance of

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.