Solve.x2 + 125 = 0

A. ± 10i 
B. ± i 
C. ± 5 
D. ± 5i 


Answer: D

Mathematics

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The graphs show the position s, velocity v = ds/dt, and acceleration a = d2s/dt2 of a body moving along a coordinate line as functions of time t. Which graph is which?

A. A = position, B = velocity, C = acceleration B. B = position, C = velocity, A = acceleration C. C = position, A = velocity, B = acceleration D. A = position, C = velocity, B = acceleration

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The circle graph shows the results of the student council presidential election and the percent of the vote each person received.What percent of the votes did Ben NOT get?

A. 75% B. 68% C. 25% D. 72%

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Business equipment is often depreciated using the double declining-balance method. In this method, a piece of equipment with a life expectancy of N years, costing C dollars, will depreciate to a value of V dollars in n years, where n is given by the formula:A computer that cost $12,000 has a life expectancy of 5 years. If it has depreciated to a value of $1,800, how old is it? Round the answer to the nearest tenth of the year. 

A. 3.7 years old B. 5.3 years old C. 2.2 years old D. 3.0 years old E. 4.1 years old

Mathematics

Convert to rectangular coordinates.

A. (-2, -2)
B. (2, -2)
C. (-2, 2)
D. (2, 2)

Mathematics