This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
ScanSolve AI Answer
Question 49: Step 1: Translate "more than 18m" into an inequality. This means d > 18. Step 2: Translate "not more than 23m" into an inequality. This means d 23. Step 3: Combine the inequalities. The distance d must satisfy both conditions: d > 18 and d 23. Combining these gives 18 < d 23. The correct option is B. B. 18 < d 23 Question 50: Step 1: Distribute the negative sign into the parentheses. 12b - (5 + 2b) - 7 = 12b - 5 - 2b - 7 Step 2: Group like terms. (12b - 2b) + (-5 - 7) Step 3: Combine like terms. 10b - 12 The correct option is A. A. 10b - 12 That's 2 down. 3 left today — send the next one.