SOLUTION: student opens math book two facing pages the product is 1980 what is the first page and the second page?
Chapter 11 Introduction and intermediate algebra 3 edition
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Question 180941: student opens math book two facing pages the product is 1980 what is the first page and the second page?
Chapter 11 Introduction and intermediate algebra 3 edition
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
student opens math book two facing pages the product is 1980 what is the first page and the second page?
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There are 2 ways to do this:
#1, the hard way.
n*(n+1) = 1980
(n+45)*(n-44) = 0
n = 44
n = -45
Not many books have negative page #s, so it's 44 and 45.
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#2, the easy way.
Since the numbers differ by only 1, the square root of 1980 will be between the 2.
It's 44 and 45.
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