Tell whether the triangle with side lengths of 20 meters, 21 meters, and 29 meters is a right triangle.

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters

In a timed typing test lara typed 63 words per minute.estimate the number of words she should be able to type in half in hour show your work