Can I get some help please?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Neveah and clint are baking muffins for the bake sale. they need to bake 30 muffins for their display case. clint has baked 4 so far, and neveah has baked 7. how many muffins (m) do they have left to bake? show your work!

Which statement best explains why ben uses the width hi to create the arc at j from point k