Is 5feet, 12feet, 13feet a right triangle or not a right triangle ?

W-16=-12 solve each one step equation plz

Which of the following best describes the figure?

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?