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ipn [44]
3 years ago
9

I don't understand this.

Mathematics
1 answer:
Dimas [21]3 years ago
5 0
3x + y = 6.  You're free to choose any x values you wish (at least, for this linear function).  So, if you chose x = 0, y would be 6, and you'd enter    0      6    in the first row of the given table.

If you chose x = -2, then -6 + y = 6 and y would be 12.  Enter        -2     12  in the second row of the table.

You could also choose y values and calculate the related x-values.
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Step-by-step explanation:

<u>Key skills required are: Percentages, Multiplication</u>

<u />

  1. We only need the information about Class 7A. They collected 40 oz that contains 12% gold.
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Here we have to do 12% x 40 to find the number of oz of pure gold. We first have to convert 12% into a decimal. Divide it by a 100 (or move the decimal point 2 places to the left) and you will get 0.12.

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