Find all complex solutions of 3x^2+3x+7=0

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Urgentwhat is the area of the figure?