Solve the equation.4y2 = (5y + 1)2

A. {, - }
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 x-axis and the semicircle y = 

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

Mathematics

Solve the problem.The perimeter of a rectangle is  inches. Find the length x of the rectangle using the equation .

A.  in.
B. 10 in.
C. 5 in.
D.  in.

Mathematics

Find the radius or diameter as requested.Find the radius.

A. 6079.04 yd B. 22 yd C. 44 yd D. 138.16 yd

Mathematics

Solve the formula for the specified variable.P = s1 + s2 + s3  for s2

A. s2 = s1 + P - s3 B. s2 = P - s1 - s3 C. s2 = s1 + s3 - P D. s2 = P + s1 + s3

Mathematics