Solve.x4 - 89x2 + 720 = 0
A. ±3, ±4
B. ±3, ±
C. ±3, ±4
D. ±4, ±4
Answer: C
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Solve the problem.The current in the circuit is 6.50 mA. Determine the phase angle for the combination of the capacitor and the resistor. XC = 1550 ? R = 2900 ? XL = 2100 ? 
?? I
A. ? = -28.12° B. ? = -61.88° C. ? = -30.62° D. ? = -0.49°
Use Newton's method to approximate all the intersection points of the pair of curves. Some preliminary graphing or analysis may help in choosing good initial approximations. Round to six decimal places.y = ex and y = x2 + 4
A. x ? 2.158836 B. x ? 1.658726 C. x ? 2.158726 D. x ? 2.047626
Provide an appropriate response.What steps would you take to factor x2 + 12x + 27?
What will be an ideal response?
Find the distance between P and Q and the coordinates of the midpoint of the segment joining P and Q.
A. 4
; 
B. 4; 
C. 4
; 
D. 4; 