1.

If +42 represents 42m above the water surface, what does each of the following represent: [4 MARKS] (i) −87+55 (ii) +98−115 (ii) +36+57−73 (iv) −42−23+39

Answer» If +42 represents 42m above the water surface, what does each of the following represent: [4 MARKS]
(i) −87+55
(ii) +98−115
(ii) +36+57−73
(iv) −42−23+39


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