Find the sum without the use of a number line.-9 + 2

A. 11
B. -11
C. -7
D. 7


Answer: C

Mathematics

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Solve the problem.A bacterial culture has an initial population of 10,000. If its population declines to 4000 in 6 hours, what will it be at the end of 8 hours? Assume that the population decreases according to the exponential model.

A. 2530 B. 1474 C. 2947 D. 3000

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Given the side lengths of a right triangle, find the indicated value. adj = 5, hyp = Find sin ?.

A. sin ? = 
B. sin ? = 
C. sin ? = 
D. sin ? = 

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Plot the point given in polar coordinates. 

A.

B.

C.

D.

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Perform the indicated operations.4 + 30 ? 5 - (-28)

A. 126 B. 198 C. 67 D. 182

Mathematics