What number represents the most accurate estimation of 38+23

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.

How are sas and sss used to show that two triangles are congruent?

Secant be and cf intersect at point d inside a what is the measure of cde