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Translate "more than 18m" into an inequality.

Mathematics

ScanSolve AI Answer

Answer

B

Step-by-step solution

6 steps

Part 49· 3 steps

  1. Translate "more than $18m$" into an inequality.

    This means d>18d > 18.

  2. Translate "not more than $23m$" into an inequality.

    This means d≤23d \le 23.

  3. Combine the inequalities.

    The distance dd must satisfy both conditions: d>18d > 18 and d≤23d \le 23.
    Combining these gives 18<d≤2318 < d \le 23.

    The correct option is B.

    B. 18<d≤23\boxed{\text{B. } 18 < d \le 23}

Part 50· 3 steps

  1. Distribute the negative sign into the parentheses.

    12b−(5+2b)−7=12b−5−2b−712b - (5 + 2b) - 7 = 12b - 5 - 2b - 7

  2. Group like terms.

    (12b−2b)+(−5−7)(12b - 2b) + (-5 - 7)

  3. Combine like terms.

    10b−1210b - 12

    The correct option is A.

    A. 10b−12\boxed{\text{A. } 10b - 12}
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