Saved Bookmarks
| 1. |
Evaluate each of the following:(i) ∛27 + ∛0.008 + ∛0.064(ii) ∛1000 + ∛0.008 – ∛0.125(iii) ∛(729/216) × 6/9 |
|
Answer» (i) ∛27 + ∛0.008 + ∛0.064 = ∛(3×3×3) + ∛(0.2×0.2×0.2) + ∛(0.4×0.4×0.4) = ∛(3)3 + ∛(0.2)3 + ∛(0.4)3 = 3 + 0.2 + 0.4 = 3.6 (ii) ∛1000 + ∛0.008 – ∛0.125 = ∛(10×10×10) + ∛(0.2×0.2×0.2) – ∛(0.5×0.5×0.5) = ∛(10)3 + ∛(0.2)3 – ∛(0.5)3 = 10 + 0.2 – 0.5 = 9.7 (iii) ∛(729/216) × 6/9 = ∛(9×9×9/6×6×6) × 6/9 = (∛(9)3 /∛(6)3)× 6/9 = 9/6 × 6/9 = 1 |
|