The diagram below shows a model of a staircase in which all the riser heights are equal and all the tread lengths are equal.



A carpenter wants to build a staircase in which each riser has a height of 6 inches and each tread has a length of 11 inches.

Which of the following expressions is equal to the stair angle?

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

Find the area of a parallelogram with base 15 yards and height 21 2/3

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.