A marathon is 20 km. How many miles is the marathon? Show your work. Round your answer to the nearest tenth.

Find the values of y: 3y^3(y^2+ 2/3y)=0

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Joanie wrote a letter that was 1 1/4 pages long. katie wrote a letter that was 3/4 page shorter then joagies letter. how long was katies letter