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20 October, 20:04

Compare 9 * (11 - 4) and 3 * (11 - 4). A. 9 * (11 - 4) is three times as much as 3 * (11 - 4). B. 9 * (11 - 4) is nine times as much as 3 * (11 - 4). C. 3 * (11 - 4) is three times as much as 9 * (11 - 4). D. 9 * (11 - 4) is six times as much as 3 * (11 - 4).

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  1. 20 October, 20:28
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    A. 9 * (11 - 4) is three times as much as 3 * (11 - 4)

    Step-by-step explanation:

    9 is 3*3, so we can write the expression involving 9 as ...

    ... 9 * (11 - 4) = 3 * 3 * (11 - 4)

    ... = 3 * (3 * (11 - 4))

    This clearly shows that 9 x () is 3 times as much as 3 * ().
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