Find the term that should be added to the expression to form a perfect square trinomial. write the resulting perfect square trinomial in factored form. x^2+19x what is the constant term?

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Five infinity stones cost $16.80. what is the price per infinity stone ?

There are 18 female students and 16 male students in a class. which of the following expresses the ratio of female students to male students in simplest form? а) 10 b) 9 to 8 c) 8: 9 d)18/16