In 2013 , a state library received a three-year grant to add 69,678 book to their collection. during a used book sale , the library 430 books. if the collection now is five times more than the original number of books how many books did the library hold before it received the grant ?

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step-by-step explanation:

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answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

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idk the answer i want to say 10 but then it would be equal so try 9 but then yeah so yeah we love edgen