You design a tree house using a coordinate plane in which the coordinates are measured in feet. The vertices of the floor are (-4,-2), (5,-2), (5,3), and (-4,3) . Find the perimeter and the area of the floor. The perimeter of the tree house is

feet, and the area is

square feet.

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.

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Which of the following contains a variable?