A soccer team has 15 players and needs to choose a captain and an assistant captain. How many ways can those positions be selected? Select one:

105

50

30

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x