Find the following. Assume that the letter can represent any real number.

A. (5x + 2)2
B.
C.
D.


Answer: D

Mathematics

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Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the parabola y = 81 - x2 and the x-axis

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

Mathematics

Evaluate the expression for the given values.(a) m = 5, n = 5(b) m = 5, n = 20(c) m = 6, n = 3

A. (a) 0
(b) undefined
(c) 
B. (a) 0
(b) undefined
(c) 
C. (a) undefined
(b) 0
(c) 
D. (a) undefined
(b) 0
(c) 

Mathematics

Evaluate the function f at the indicated value. {3x + 5, if x ? 06 - 5x, if 0 < x < 5x, if x ? 5

A. 23 B. 6 C. -24 D. 5

Mathematics

Solve the problem.A building contractor finds that  can of pipe joint compound is needed to plumb each new home. How many homes can be plumbed with 24 cans of compound?

A. 60 homes
B. 24 homes
C. 30 homes
D. 9 homes

Mathematics