PQRS is an isosceles trapezoid. What are the coordinates of R?
Q (a, b)_R
S (c, 0)
R(c-[?], )
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In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition? a) 6 b) 8 c) 14 d) 20

Dylan is evaluation the expression 13+19+7+10 at one step in his work, dylan rewrites the equation as 13+7+19+10 which property of addition must dylan have used when he evaluated the expression?

Ratio of circumference to diameter example plz i need to now what it looks like.