In 2010, the average person in mexico used about 5.25 kilowatt-hours of electricity per day. the population of
mexico that year was about 1.11x 108. approximately how much electricity was used in mexico each day on
average?

How many degrees does the hour hand move from 3: 00 to 5: 30?

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.