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Thaisinaiany
@Thaisinaiany
October 2020
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Alguém pode ajudar? Nas duas, 8 e 9.
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7) 2^x+1 - 2^x - 2 - 2^x -3 = 104
2.2^x - 2^x - 2^x = 104
2^2 2^3
2.2^x - 2^x - 2^x = 104 mmc = 8
4 8
16.2^x - 2.2^x - 1.2^x = 104
13,2^x = 104
2^x = 104/13
2^x = 8
2^x = 2^3
x = 3
l
etra E
8) P(t) = 25.2^t
25.2^t = 400
2^t = 400
25
2^t = 16
2^t = 2^4
t = 4
Letra A
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Lista de comentários
Verified answer
7) 2^x+1 - 2^x - 2 - 2^x -3 = 104
2.2^x - 2^x - 2^x = 104
2^2 2^3
2.2^x - 2^x - 2^x = 104 mmc = 8
4 8
16.2^x - 2.2^x - 1.2^x = 104
13,2^x = 104
2^x = 104/13
2^x = 8
2^x = 2^3
x = 3
letra E
8) P(t) = 25.2^t
25.2^t = 400
2^t = 400
25
2^t = 16
2^t = 2^4
t = 4
Letra A