suppose we want to choose 3 letters without replacement from the 4 letters A, B,C, D how many ways can this be done if the order of choice os relevant

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet