My question has been deleted I made a mistake

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

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?