30% of the library books in the fiction section are worn and need replacement. 10% of the nonfiction holdings are worn. The libr
ary’s holdings are 80% fiction and 20% non fiction. find the probability that a book chosen at random from this library is worn and needs replacement. Please help!
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<h3>Answer:</h3>
∠C = 40°
∠D = 75°
<h3>Step-by-step explanation:</h3>AB ║ CD, so AD and BC are transversals. The angle pairs (A, D) and (B, C) are "alternate interior angles", hence congruent.
∠C = ∠B = 40°
∠D = ∠A = 75°