Explain how you can determine that the following system has one unique solution – without actually solving the system.

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it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.