Simplify, if possible, by combining like terms.-6y - 5y

A. 11y
B. -11y2
C. -11y
D. 30y


Answer: C

Mathematics

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Approximate the square root. Round to the nearest tenth, if needed.

A. 15.5 B. 15.2 C. 15.4 D. 15.3

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Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them.x + y = 3x - y = -2

A. x = , y = - 1
B. Inconsistent
C. x = , y = 
D. x = , y =  

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Find the exact value by using a half-angle identity.sin 

A.  
B.  
C.  
D.  

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Find the area under the curve over the indicated interval.

Mathematics