Colin was using the back of his book to check his homework answers. The answer that he had on his paper was −13 − (15 + 58) − 1 3 − ( 1 5 + 5 8 ) . The correct answer, located in the back of the book, was −13 −15 + 58 − 1 3 − 1 5 + 5 8 . Was Colin correct?

From the question, we are informed that the answer that Collin had on his paper was −13 − (15 + 58) and the correct answer, located in the back of the book, was −13 −15 + 58.

Collin is wrong because he didn't take into cognisance the effect of minus on the bracket. Here, −13 − (15 + 58) will be equal to -13 -15 -18. This is because minus multiplied by plus equals to minus. He shouldn't have put the numbers in the bracket.

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answer: a rhombus has two lines of symmetry that run through one vertex to the one directly across it. unlike a square, planes through the center of each edge of a rhombus do not yield mirrored sides.

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