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Mathematics 13 Online
OpenStudy (anonymous):

3xy + 9 = 33

OpenStudy (freckles):

what do you want to do with this equation

OpenStudy (anonymous):

Which pairs are solutions to the equation? 3xy + 9 = 33 (Points : 1) (1, 8) and (8, 1) (1, 8) and (1, 11) (1, 11) and (2, 6) (8, 1) and (2, 6)

OpenStudy (freckles):

plug in and see which points work

OpenStudy (freckles):

for example does D work? well 3(8)(1)+9=24+9=33 <--both sides would equal but 3(2)(6)+9=45 <---both sides do not equal so D is definitely not right

OpenStudy (freckles):

you try the other parts

OpenStudy (anonymous):

ok

OpenStudy (ageta):

Let's solve for x. 3xy+9=33 Step 1: Add -9 to both sides. 3xy+9+−9=33+−9 3xy=24 Step 2: Divide both sides by 3y.

OpenStudy (ageta):

Answer: x=8/y

OpenStudy (anonymous):

k thanks

OpenStudy (ageta):

u welcome

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