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11 November, 18:33

Evaluate the following expression when b = - 4, - 4.5b=

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  1. 11 November, 21:32
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    18

    Step-by-step explanation:

    The question is asking you to evaluate - 4.5b, which is a simplified way of saying

    -4.5 * b

    Since we know that b = - 4, we can insert that instead of b.

    -4.5 * - 4

    The two negatives cancel each other out, so you're left with

    4.5 * 4 = 18
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