Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It’s also seen as a “gatekeeper” subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it’s impossible to move forward. It’s used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we’ll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

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A born overachiever, Deborah Berebichez defied skeptics all her life. In spite of economic obstacles, oppressive cultural norms, and the judgmental glare of those who doubted her, she became the first Mexican woman to earn a PhD in physics from Stanford University. She achieved everything she dreamed, and then abruptly lost momentum. What happens when…

The order of an element in a group is the smallest positive power of the element which gives you the identity element. We discuss 3 examples: elements of finite order in the real numbers, complex numbers, and a 2×2 rotation matrix. If you’d like to help us make videos more quickly, you can support us…

This is a topic level video of Identifying Polynomial Functions for ASU. Join us! https://www.edx.org/course/college-algebra-problem-solving-asux-mat117

To find the answer to this word problem, we’ll have to convert the mixed numbers into improper fractions first. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/add-subtract-fracs-wp-pre-alg/e/adding-and-subtracting-fractions-with-unlike-denominators-word-problems?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplying-fractions-pre-alg/v/multiplying-fractions-and-whole-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/add-subtract-fracs-wp-pre-alg/v/adding-fractions-with-unlike-denominators-word-problem?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Pre-Algebra on Khan Academy: No way, this isn’t your run of the mill arithmetic. This is Pre-algebra.…