To solve \(-3° + 4.5\), we need to clarify that \(°\) might reference degrees in a trigonometric context or thermal temperature context, but since the operation doesn't specify any particular trigonometric function or conversion, we can interpret it as more of a mathematical manipulation.
From the options provided:
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-3^0 + 4.5 = -3 + 4.5 = 1.5: This is incorrect because \(-3^0\) evaluates to \(-3\) (due to exponentiation rules), which results in \(1.5\) not corresponding to an addition of a degree.
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-3° + 4.5 = (-3)° + 4.5 = 1 + 4.5 = 5.5: This is problematic in terms of notation; it incorrectly processes the degree symbol.
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-3° + 4.5 = -1.3° + 4.5 = 1.1 + 4.5 = -1 + 4.5 = 3.5: This also is incorrect and doesn't follow proper arithmetic rules.
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-3° + 4.5 = -3 • 0 + 4.5 = 0 + 4.5 = 4.5: This option seems to involve the incorrect assumption that \(-3°\) equals \(-3 • 0\), which is incorrect.
None of the provided options appropriately demonstrate a correct process for simply adding \(-3\) and \(4.5\). The simple calculation for \(-3 + 4.5\) yields \(1.5\), but the equivalence to ° (degrees) or other manipulations makes it confusing and misleading. Thus, all responses are flawed in various manners.
If strictly concerning arithmetic without context applied, the correct answer should ultimately reflect: -3 + 4.5 = 1.5.
For proper choice identification, however, it appears none of these choices provided were correct.
3 answers