Use a combination to answer the following question. The track coach needs to higher three managers for the track team. If ten students applied for the positions,

How many ways can the coach select three managers from 10 students?

n=
r=



(answer with no comas or decimals)

To diagonalize an nxn matrix a means to find an invertible matrix p and a diagonal matrix d such that a pdp d p ap or [1 3 dh epap 3 let a=-3 -5 -3 3 3 1 step 1: find the eigenvalues of matrix a "2's" step 2: find the corresponding eigenvectors of a step 3: createp from eigenvectors in step 2 step 4 create d with matching eigenvalues.