The proportion
peanuts : raisins : chocolate chips = 4 : 6 : 2
tells you that peanuts make up
4/(4+6+2) = 1/3
of the total quantity of the mix.
The quantity of peanuts required is (1/3)*(48 ounces) = 16 ounces (or 1 pound).
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In the 48 ounces of mix, 1 part = 4 ounces.
13 factored out is 13x - 39 add 39 to both sides it equals 13x=78 and 78 divided by 13 is 6 the anwser is x=6
Number 3 because there is one output(y value) for one input (x value)
To your question, "K<-5", that is the answer. So the answer is K<-5
No, it is not a valid inference because her classmates do not make up a random sample of the students in the school.