If we denote the height of a place above sea level by a positive integer and depth below the sea level by a negative integer,
If we denote the height of a place above sea level by a positive integer and depth below the sea level by a negative integer, write the following using integers with the appropriate signs:
(a) 200 m above sea level
(b) 100 m below sea level
(c) 10 m above sea level
(d) sea level
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(a) 200 m above sea level = + 200
(b) 100 m below sea level – – 100
(c) 10 m above sea level = + 10
(d) Sea level = 0
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