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Fractions are necessary in every day life because everything does not fit into a perfectly defined number. Such tasks as cooking, building, sewing and manufacturing use fractions for measurements that potentially change ... More »

To add fractions, ensure the bottom numbers (denominators) are the same, add the top numbers (numerators), keep the denominator, and simplify the fraction if needed. This process can be done by hand or by using a calcula... More »

If an exponent is a fraction, such as y^1/n, the correct operation is to take the nth root of the base number y. For example, 27^1/3 is the same thing as taking the cube root of 27, so the answer is 3. More »

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The types of answers on WebAssign vary according to the nature of the question and may involve a number, letter, word or a more complex response. Simple factual answers can be graded either by the instructor or an automa... More »

The ordinal number of the months that have 31 days are one, three, five, seven, eight, 10, and 12. The months that have 31 days are January, March, May, July, August, October and December. More »

Predominance is a noun referring to the condition of being predominant, or large in number. An example of the use of "predominance" is a sentence is, "The U.S. limit of two terms for a president protects against the pred... More »

A number of online sites are set up to help students conduct research for science homework, such as Fact Monster, Discovery Education and Britannica Kids. These sites offer resources for parents, students and educators s... More »