Your teacher informs you that a study shows that the average starting salary of college graduates who have taken a stats course is $55,785. There were 35 people in the study & the standard deviation was $5,000. For a 95% confidence level, find the confidence interval for this study.

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

The stairs leading from the ground to the entrance of a plane forms a right triangle with the ground. if the distance of the stairs measures 22 feet and the ground distance measures 11 feet, how high is the entrance to the plane from the ground? which diagram represents this scenario? / 22ft © 22ft 11 ft 11 ft 22 it

Felix wrote several equations and determined that only one of the equations has no solution. which of these equations has no solution?