Solve the quadratic equation using the most efficient technique (factoring, extracting square roots, completing the square, or the quadratic formula).x2 + x + 5 = 0
A. 
B. 
C. 
D. 
Answer: A
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Find the standard deviation for the given data. Round your final answer to one more decimal place than that used for the observations.The manager of an electrical supply store measured the diameters of the rolls of wire in the inventory. The diameters of the rolls (in m) are listed below.0.665?0.565?0.422?0.426?0.395?0.407?0.321
A. 0.426 mm B. 1.5457 mm C. 0.1168 mm D. 1.4638 mm
Solve the problem.An observer to a rocket launch was 800 ft from the take-off position. The observer found the angle of elevation of the rocket as a function of time to be 
Therefore, the height h (in ft) of the rocket was 
Find the time rate of change of height at 
A. 240 ft/s B. 400 ft/s C. 1100 ft/s D. 6700 ft/s
Express the integrand as a sum of partial fractions and evaluate the integral.
A. 2 ln 
+ 
tan-1 
+ C
B. 2 ln 
+ tan-1 
+ C
C. 2 ln 
+ 
tan-1 
+ C
D. ln 
+ 
tan-1 
+ C
Solve.Given log 2 = 0.3010 and log 3 = 0.4771, evaluate log 6.
A. 0.7781 B. 0.9030 C. 0.1436 D. 0.9542