Add each pair of monomials and match it to the correct sum Monomials Sum

-10u3 -15u3 + 5u3

-5u3 10u3 +(-5u3)

5u3 10u3 + 5u3

15u3 5u3 + (-10u3)

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.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n