Solve the equation by completing the square.x2 + x + 6 = 0
A. 
± 
B. 
± 
i
C. - 
± 
i
D. - 
± 
Answer: C
Mathematics
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Evaluate or simplify the given expression.cos(2 cos-1 x)
A. 1 B. 2x2 - 1 C. 2x2 + 1 D. -1
Mathematics
Solve.The resultant force on an object is the sum of all forces acting on the object. Find the resultant force for the object below.
A. -283.5 N B. 2507.5 N C. -2507.5 N D. -839.5 N
Mathematics
Find I when:
ÚÄ ³P I = ³Ä ûR a. P = 20 W, R = 100 ê b. P = 400 W, R = 4 ê c. P = 400 mW, R = 40 Kê
Mathematics
Solve the linear inequality. Express the solution in set-builder notation.-2(2x + 18) < -6x - 18
A. {x|x < -6} B. {x|x > -6} C. {x|x > 9} D. {x|x < 9}
Mathematics