mermaid2018
mermaid2018
23-05-2016
Mathematics
contestada
I really need help, thanks.
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caylus
caylus
23-05-2016
Hello,
I suppose the function is y=3√(6x+42)
==>6x+42>=0 (it must be a square root of a positive)
==>6x>=-42
==>x>=-42/6
==>x>=-7
ANSWER D
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