jstring2past
jstring2past
29-04-2017
Mathematics
contestada
if 3^2×-1=81, what is the value of x?
Respuesta :
Tamiaharris1940
Tamiaharris1940
29-04-2017
it wrong, 3^2 =9
9 x -1= -81.
it always negative put on it.
Answer Link
ghanami
ghanami
29-04-2017
hello :
3^(2×-1)=81
3^(2×-1) = 3^4
2x-1 =4
2x=5
x=5/2
Answer Link
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