Question

Please help

Answer 1

Answer:

the number of houses ≈ 8.25 million houses  

Explanation:

Given that:

A typical house in the United States uses about 10,900 kWh,

1 TWh (terawatt-hour) =1×10^6 GWh (gigawatt-hour) =1×10^9kWh (kilowatt-hour)

The three Gorges Dam in China produces about 90TWh of electricity each year. If it was to to be built in the United states, the number of houses such a plant would be able to provide the electricity for in a year is given as:

Number of houses = Amount of electricity produced in a year / amount of electricity used by each house.

Number of houses = 90 TWh /  10,900 kWh = 90 × 10⁹ kWh /  10,900 kWh = 8256881

Therefore the number of houses ≈ 8.25 million houses