Solving the quadratic equation \( n^2 + n - 420 = 0 \):
Related Articles
- Setting \( S = 210 \):
- \( \frac{n(n + 1)}{2} = 210 \)
- \( n(n + 1) = 420 \)
- \( n = \frac{-1 \pm \sqrt{1 + 1680}}{2} = \frac{-1 \pm \sqrt{1681}}{2} = \frac{-1 \pm 41}{2} \)
- Taking the positive solution: \( n = \frac{40}{2} = 20 \).
- A train travels 300 km at a speed of 60 km/h and then another 200 km at a speed of 80 km/h. What is the train's average speed for the entire journey?
Trending Articles
Why Everyone’s Quietly Swearing By This Stitch Blanket—Swipe to See Its Hjęte Success!
You Won’t Believe How Fast This Stitch Blanket Is Selling—Grab Yours Before Stock Disappears!
Stitch Wallpaper Magic: Transform Walls into Living Art Overnight!
Stick a Stitch and Customize Your Space – Here’s How! | Stitch Wallpaper Hack!
5 Stunning Stitch Wallpaper Hacks You Need to Try Today!
Why Stitch Wallpaper is Taking Interior Design by Storm – Stunning Results Guaranteed!
Stitch Wallpaper Secrets: Create Stunning Textures Like a Pro!
This Stitch PNG Will Change Your Design Game Overnight – You Won’t Believe How Powerful It Is!
Download This Stitch PNG – It’s the Secret High-Quality Element Every Artist Needs!
Stitch PNG Revealed: The Ultimate Free Graphic Element That Blushes with Quality!