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Since 100% of a number is the number itself, it follows that 200% of a number would be twice the number.

Percents can be used to describe how a quantity has changed

Instead of working for a salary or getting paid at an hourly rate,many salespeople are paid on commission.They earn a certain percent of the total dollar ...

The specific gravity of a substance is often listed in tables instead of either mass density or weight density

The periodic table sorts the elements by chemical properties and are listed horizontally in order by atomic number.

The study of what happens when an atom is broken apart is the subject of nuclear physics.

All of the materials and substances that we experience are made up of elements

Newton argued that if a cannon could be placed on a hill high enough to be outside the earth's atmosphere, and if the cannon could be made powerful enough, a ...

About 50 years before Newton formulated the law of gravity, Johanne Kepler (1571-1630) had found some rules that could be used to calculate the orbits of the ...

To raise a product to a power, raise each factor of the product to that power