Question

A water park has pools, slides, and rides that, in total, make use of 6, point, 9, times, 10, to the power 56.9×10
5
gallons of water. They plan to add a ride that would make use of an additional 83,000 gallons of water. Use scientific notation to express the total gallons of water made use of in the park after the new ride is installed.

Answer 1

First write both numbers in scientific notation:
- Existing water: 6.9 × 10^5 gallons
- New ride: 83,000 = 8.3 × 10^4 = 0.83 × 10^5 gallons

Add with the same power of ten:
(6.9 + 0.83) × 10^5 = 7.73 × 10^5

So the total after the new ride is 7.73 × 10^5 gallons.