What is 2/5 times 30 equal in simplets form

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

What is the total surface area of this square pyramid?