Dan is cutting 4.75 foot length of twine from a 240 foot spool of twine. he needs to cut 42 lengths, and says that 40.5 feet of twine will remain. is his answer reasonable?

Which expression is equivalent to sq-80

What percent of 18 is 24? and plz explain thx.

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.