Joan was asked to draw a right triangle how many right angles are in a right triangle?
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What value is equivalent to 5 + [5 × (4 + 2)]? a) 35 b) 45 c) 60 d) 110

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?