Use Cramer's rule to find the solution of the system, if possible.
A) x = 1, y = -1
B) x = 7, y = -8
C) x = 7, y = -7
D) The system is inconsistent.
E) The equations are dependent.
A) x = 1, y = -1
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Find the second derivative of the function.s = 
A. 
= 5t4 - 
- 
B. 
= 20t3 + 
+ 
C. 
= 20t5 + 
+ 
D. 
= 5t3 - 
- 
Solve the equation by the square root method.2x2 + 5 = 13
A. {-3, 3} B. {2} C. {6.5} D. {-2, 2}
Find all complex roots. Write the answer in polar form, with 0 ? ? ? 360°.Cube roots of 3 - 3i
A. 
(cos 60° + i sin 60°), 
(cos 180° + i sin 180°), 
(cos 300° + i sin 300°)
B. 
(cos 100° + i sin 100°), 
(cos 220° + i sin 220°), 
(cos 340° + i sin 340°)
C. 
(cos 100° + i sin 100°), 
(cos 220° + i sin 220°), 
(cos 340° + i sin 340°)
D. 
(cos 80° + i sin 80°), 
(cos 200° + i sin 200°), 
(cos 320° + i sin 320°)
A searchlight rotates through one complete revolution every 2 seconds. How long does it take the light to rotate through 180°? ? __________ sec.
Fill in the blank(s) with the appropriate word(s).