Norah has read 72 pages, which is 45% of a book. How many pages are in the book?

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Afootball is throw by a quarterback to a receiver