With this series of books the authors have provided a selection of problems with complete solutions and test papers designed to be used with or instead of standard textbooks on algebra. For the ...

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This title is available on our Higher Education website. Linear algebra has become the subject to know for people in quantitative disciplines of all kinds. No longer the exclusive domain of ...

Algebraic expressions can be expanded - multiplied by one or more terms. They may also be simplified – made shorter and simpler by collecting like terms. Multiply \(-3\) by \(-4\) using the rule ...

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Find out how to substitute simple expressions and formulae. Find pairs of values that satisfy equations with two variables Learn how to find pairs of values that satisfy equations with two variables.

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A t-test is an inferential statistic used in hypothesis testing to determine if there is a statistically significant difference between the means of two sample populations. A t-test is an ...

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The free COVID-19 tests the federal government recently rolled out will expire soon, but there is an explanation for that. Two weeks ago, the U.S. Department of Health and Human Services ...