A percentage is a portion out of 100, and because it is a portion of a whole it can be written as a fraction of an amount (in this case a fraction of 100). You can also rewrite this as a decimal because a fraction is essentially the same thing as a division problem and when you divide a number by 100 you usually get a decimal (if the numerator is smaller than 100 that is), and also because decimals are similar to fractions because they represent parts a whole unit for instance the percentage 72% is equivalent to the fraction 72/100 which is the same as 72 divided by 100 which is the same as the decimal 0.72.
Sorry for the long explanation but I hope this helped!
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hello there how are you today
you awnser is A and C they both apply
(1/2)x +y = 3 (equation 1)
2x +4y = 12 (equation 2)
((1/2)x +y = 3) x4
= 2x +4y = 12
2x +4y = 12
-
2x +4y = 12
= nothing
answer is B infinitely many solutions as the lines are stacked on top of another.
