Solve the problem.Avegail needs to determine the distance at certain points across a lake. Her crew and she are able to measure the distances shown on the diagram below. Find the distance across the lake to the nearest tenth of a meter.
A. 9.5 m
B. 90 m
C. 187.9 m
D. 150 m
Answer: D
Mathematics
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Divide the monomials.
A. 8x6y6 B. 8x6y7 C. x7y7 D. 8x7y7
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where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the hydrogen ion concentration is 
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Mathematics
Solve the problem.The decay of 466 mg of an isotope is given by A(t) = 466e-0.013t, where t is time in years. Find the amount left after 79 years.
A. 165 mg B. 460 mg C. 167 mg D. 84 mg
Mathematics