If 9x^2+y^2=58 and xy=7 then what is the value for 3x+y ,?
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xy=7
1.4*5=7 so
3x+y=3*1.4+5=4.2+5=9.2
1.4*5=7 so
3x+y=3*1.4+5=4.2+5=9.2
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