Evaluate the sum.
A. 5
B. 23
C. 9
D. 25
Answer: D
Mathematics
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Find A-1 then use it to find the solution to the system.
A. A-1 = - 
; x = - 
, y = - 
, z = 
B. A-1 = - 
; x = 
, y = 
, z = - 
C.
A-1 = -   ; | x =  , y =  , z = -  |
D. A-1 = -
; x = 
, y = 
, z = - 
Mathematics
Find all cube roots of the complex number. Leave answers in trigonometric form.-125
A. 5 cis 180°, 5 cis 0° B. 5 cis 60°, 5 cis 180°, 5 cis 300° C. 5 cis 120°, 5 cis 180°, 5 cis 300° D. 5 cis 30°, 5 cis 150°, 5 cis 270°
Mathematics
Find the indicated output.P(x) = x2 + 2x + 4; find P(3).
A. -1 B. 7 C. 19 D. 11
Mathematics
Add.421748702215
A. 2912 B. 2812 C. 2922 D. 2822
Mathematics