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Distance =20 miles, 5= mph?
if you were going 20 miles but the speed limit 5 mph then it would take you 4 hours i think
Is it true significant digits are the number of digits that reflect the precision of a measurement or number?
No, it is not true. They reflect the precision of the number in the context of its use. If required to calculate the population density of Greater London in 2011, I would use the population in millions - not because that is the limit of the accuracy of the census results but because greater accuracy does not add significant value to the precision of the population density.
What would you use to measure a load limit of an elevator with?
tons
What is limit as x approaches 0 of cos squared x by x?
The limit of cos2(x)/x as x approaches 0 does not exist. As x approaches 0 from the left, the limit is negative infinity. As x approaches 0 from the right, the limit is positive infinity. These two values would have to be equal for a limit to exist.
What does population size mean in science?
It is the number of units in a statistical study. The "population" need not refer to people. For example, when researching house prices in an area, the population would comprise all the houses in the area and the population size would be the number of houses.
