Saved Bookmarks
| 1. |
Find the eighth term of the geometric sequence which the third term is 36 and the fifth term is 81 . |
|
Answer» Answer: The nth term of a GEOMETRIC sequence is given by an = am×rn−m where:r = COMMON ratio USE the formula above to SOLVE for r . an = am×rn−m a5 = a3×r5–3 a5 = a3×r2 81 = 36×r2 2.25 = r2 r = 1.5 Use again the formula to solve for the 8th term. an = am×rn−m a8 = a5×r8–5 a8 = 81×1.53 a8 = 81×1.53 = 273.375 Step-by-step explanation: hope this help you |
|