The two triangles below are similar. Find the missing length.

A. x = 16
B. x = 20
C. x = 15
D. x = 5


Answer: C

Mathematics

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Find the sum of the arithmetic sequence.{-5n + 1}, n = 47

A. -5193.5 B. -5475.5 C. -5593 D. -5358

Mathematics

Eliminate the parameter to find a Cartesian equation for the ellipse.x = 2 + 6 cos t, y = 6 + 6 sin t

A.  -  = 1
B.  +  = 1
C.  +  = 1
D.  +  = 1

Mathematics

True or false: The matrix  is diagonalizable. ?

A. ?false B. ?true

Mathematics

Simplify the expression.- (z - 14) - z

A. z - 
B. z + 14
C. z + 
D. - z + 

Mathematics