Find the mid segments. If AC=16 and BD=24, find the lengths of the mid segments of ABC and ADB

A) Midsegment of ABC = 12, midsegment of ADB = 8
B) mid segment of ABC = 8, midsegment of ADB = 12
C) midsegment of ABC = 32, midsegment of ADB = 48.
D) midsegment of ABC=48, midsegment of ADB=32

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

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If the discriminant if a quadratic equation is 4 which statement describes the roots?