\( S_9 = 3(81) + 5(9) = 243 + 45 = 288 \)
Related Articles
- The sum of the first \( n \) terms of an arithmetic sequence is \( S_n = 3n^2 + 5n \). Find the 10th term.
- The \( n \)-th term is \( a_n = S_n - S_{n-1} \).
- \( S_{10} = 3(100) + 5(10) = 300 + 50 = 350 \)
- \( a_{10} = 350 - 288 = 62 \)
- #### 10th term: 62
- A ball is thrown upward from a 45-meter tall building with initial velocity 20 m/s. Its height is modeled by \( h(t) = -5t^2 + 20t + 45 \). When does it hit the ground?
Trending Articles
Ark Ragnarok Dino List: Which Legendary Titans Are Worth The Grind?
From Tabaxi to Lizardfolk: The Lore Secrets They Hide
From Beta to Beast: The Untold Story Behind the HSR Banner Evolution
Unlock Secret Garden Levels: PlayHop’s Hidden Green Thumb Challenge!
Make Your 3DS Home Menu Look Like Android
Level Up Your Holiday Baking with One Epic Shortcut—Ready? 
Why Does This Pirate Game Keep Popping Up Out of Nowhere?
Sims 4 Hidden Milestones Mystery Solved Fast
The Shocking Reason Gamers Won't Trim Their Nails
How to Build a Perfect Mana Curve Using Only Dual Lands