Explanation: Had completed (correct tense): In this context, the past perfect tense "had completed" is appropriate as it indicates that the completion of Jack's homework occurred before another past action (the teacher arriving). Options: (a) Completed: This is the past tense, but it doesn't convey the necessary chronological sequence of events. It suggests completion without specifying its relationship to the teacher's arrival. (b) Complete: This is the base form of the verb and does not convey the correct past tense. (c) Completes: This is the present simple tense and is not suitable for describing a completed action before another past action. (d) Had completed: This is the correct past perfect tense, indicating that the homework was finished before the teacher arrived.
√3598 × √(230 ) ÷ √102= ?
150% of 850 ÷ 25 – 25 = ?% of (39312 ÷ 1512)
12% of 400 - 34 + 65 = ?
(18% of 360) ÷ 0.4 = ?
(175616)1/3 ÷ 8 × √2401/7 + √5184/8 – 18 = ?
√1225 ÷ √49 × √225 = ?2 – 6
The value of ((0.27)2-(0.13)2) / (0.27 + 0.13) is:
What will come in the place of question mark (?) in the given expression?
(72 × 6 ÷ 12) × 6 = ?
32 × 3 (54 – 15) + 186 ÷ 3 ÷ 2 – (21)² = ?
