Carlos created a metal containing 72% iron by combining two other metals. One of these other metals weighed 9mg and contained 84% iron. If the other weighed 2mg, then what percent of it was iron.

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step-by-step explanation:

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

answer: (3,11) is your answer.

is there supposed to be a picture here?