Name the property of equality that justifies: If x = 3 and y = x + 5, then y = 8
1 answer:
Substitution. This is because we put in x as 3 in the equation.
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Soccer : (12.3 + 13.2 + 12.5 + 11.3 + 14.4) / 5 = 63.7 / 5 = 12.74
track : (12.3 + 11.2 + 11.7 + 12.2 + 13.7) / 5 = 61.1 / 5 = 12.22
difference is : 12.74 - 12.22 = 0.52 <=
