39 5 points
9. A family is looking to see how much of their electricity bill is coming from their clothes washer and drier. The washer uses 1500 watts and the clothes drier uses
2000 watts and the family pays $.10 per kilowatt-hour. The appliances runs approximately 30 minutes each day(total together). How much does the family spend
per week to run both these appliances? Show set up with units

Per week expenses = $73.5

Explanation:

Given:

Washer uses = 1500 watts

Drier uses  = 2000 watts

Kilowatt-hour = $0.10

Find:

Per week expenses

Computation:

Total uses = 1500 + 2000

Total uses = 3500

Week uses = 3500(30)(7)

Week uses = 735000

Per week expenses = (735000)(0.10)/(1000)

Per week expenses = $73.5

about 40,000,000 results (0.81 seconds)  

search results

what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.