Simplify.22 + 2

A.
B.
C.
D.


Answer: D

Mathematics

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Solve the problem.Find the center of mass of the hemisphere of constant density bounded  and the 

A.  = 0,  = 0,  = 
B.  = 0,  = 0,  = 
C.  = 0,  = 0,  = 1
D.  = 0,  = 0,  = 

Mathematics

Factor completely.48a2 + 0a - 3

A. (4a + 1)(12a - 3) B. 3(4a - 1)(4a + 1) C. (12a + 3)(4a - 1) D. 3(4a + 1)(4a - 1)

Mathematics

Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.  y = 3x + 43x + y = -2

A. (-1, 1) B. (1, -1) C. (1, -5) D. (-2, -2)

Mathematics

Simplify the expression by using a sum or difference identity.cos (53°) cos(47°) + cos(-37°) sin(-47°)

A. 0 B. cos 100° C. 1 D. sin 100°

Mathematics