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  2. Elementary algebra - Wikipedia

    en.wikipedia.org/wiki/Elementary_algebra

    When the exponent is zero, the result is always 1 (e.g. is always rewritten to 1). [17] However , being undefined, should not appear in an expression, and care should be taken in simplifying expressions in which variables may appear in exponents.

  3. Clearing denominators - Wikipedia

    en.wikipedia.org/wiki/Clearing_denominators

    The simplified equation is not entirely equivalent to the original. For when we substitute y = 0 and z = 0 in the last equation, both sides simplify to 0, so we get 0 = 0 , a mathematical truth. But the same substitution applied to the original equation results in x /6 + 0/0 = 1 , which is mathematically meaningless .

  4. Algebra tile - Wikipedia

    en.wikipedia.org/wiki/Algebra_tile

    Algebra tiles are mathematical manipulatives that allow students to better understand ways of algebraic thinking and the concepts of algebra.These tiles have proven to provide concrete models for elementary school, middle school, high school, and college-level introductory algebra students.

  5. Order of operations - Wikipedia

    en.wikipedia.org/wiki/Order_of_operations

    Simplified formal grammar for arithmetical expressions in a programming language (left), [45] and derivation of the example expression (a+b)^2/2 (right). The latter corresponds to a hierarchical structure (" syntax tree ") which is unique for the given expression.

  6. How much should you have in your 401(k)? Here's how your ...

    www.aol.com/finance/average-401k-balance-by-age...

    The goal is to have 6 times your salary by the time you hit age 50. If that’s the case, that would mean these folks are earning $10,000 a year, ...

  7. FOIL method - Wikipedia

    en.wikipedia.org/wiki/FOIL_method

    The FOIL method is a special case of a more general method for multiplying algebraic expressions using the distributive law. The word FOIL was originally intended solely as a mnemonic for high-school students learning algebra. The term appears in William Betz's 1929 text Algebra for Today, where he states: [2]

  8. The most dangerous roads during Christmas and New Year's Eve

    www.aol.com/finance/most-dangerous-roads-during...

    I-10 in Riverside County, California: 17 (population 2.47M) US-19 in Pasco County, Florida: 14 (population 609k) I-10 in San Bernardino, California: 14 (population 2.19M)

  9. My System for Making Sure I Do What Matters

    images.huffingtonpost.com/2013-02-02-MySystemfor...

    My#System#for#Making#Sure#I#Do#What#Matters# #! With!all!the!devices!we!use!on!a!daily!basis,!I!still!like!to!make!my!to7do!lists!with!pen!to! paper!!!I!find!it!is ...