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Jordaan
@Jordaan
December 2019
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O resultado da expressão numérica (13² - 11²) ÷ (12²÷3)÷(10²-9²-4²) é:
a)3/4
b) 1/5
c) 1/3
d) 2/5
e) 1/4
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OGuh
Resolvendo cada parenteses separadamente:
(13² - 11²) ÷ (12²÷3)÷(10²-9²-4²) =
(169 - 121)
÷ (144
÷ 3)
÷ (100-81-16) = 1/3
Resposta: c) 1/3
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(13² - 11²) ÷ (12²÷3)÷(10²-9²-4²) =
(169 - 121) ÷ (144 ÷ 3) ÷ (100-81-16) = 1/3
Resposta: c) 1/3