Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.

A.  +  
B.  -  
C.
D.  - 


Answer: B

Mathematics

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By calculating an appropriate number of terms, determine if the series converges or diverges. If it converges, find the limit L and the smallest integer N such that  for  otherwise indicate divergence.an = 

A. L = 0, N = 5
B. L = , N = 8
C. L = , N = 6
D. diverges

Mathematics

Find the equation of the line that passes through the two given points. If possible, write your equation in slope-intercept form.(2, -4) and (-5, -9)

A. x = - y - 
B. x = y - 
C. y = - x - 
D. y = x - 

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Determine if matrix A is invertible.A = 

A. Not invertible B. Invertible

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Determine whether the matrices are inverses. , 

A. Yes B. No

Mathematics