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Density= mass x volume
So plug in your variables for mass and volume:
Density= (55)(5)
Density= 275 :))
Just multiply 9x9 then mutiply the answer by 9 and there you go
These are answers! To your question hope it helped:)
Infinite many solutions is when you can put any number in X and it will be true, therefore both equations must be the same:
73x + 71 = 73x + 71
P = 71 and Q = 73
Multiply the amount of water by the percentage:
100 x 0.035 = 3.5g of salt.