 23-05-2021, 04:20 Mathematics 321 0 Hexadecimal notation (base sixteen) is used throughout the Web and computer systems to indicate values. One good example is the notation for color in HTML pages. Reading and using hexadecimal takes some practice, but the basic concept is no more difficult to understand than the ordinary decimal (base ten) system you've been using all your life. 22-05-2021, 16:20 Surface Area 327 0 A rectangular prism is a name for a 6-sided 3-dimensional figure that is very familiar to everybody—a box. Think of a brick, or a shoebox, and you know exactly what a rectangular prism is. The surface area is the amount of space on the outside of the object. "How much paper do I need to wrap this shoebox" sounds a lot less complicated, but it's exactly the same math problem. 21-05-2021, 08:40 Multiplication and Division 64 0 If you face yourself having to do multiplication without a calculator, multiplying long strings of numbers can seem like a daunting task. Multiplication of more than three digits can be tiresome, complex, and error-prone. A simple and effective way to do complex multiplication is lattice multiplication, which breaks up the digits being multiplied into tables and columns. 19-05-2021, 17:40 Mathematics 399 0 In mathematics, the concept of percent change is used to describe the relationship between an old value and new value. Specifically, the percent change expresses the difference between the old and new values as a percentage of the old value. Use the equation ((V2 - V1) / V1) × 100, in which V1 represents an old or initial value and V2 represents the new or current value. If the number 19-05-2021, 17:30 Trigonometry 365 0 Trigonometry is the branch of mathematics that studies triangles and cycles. Trigonometric functions are used to describe properties of any angle, relationships in any triangle, and the graphs of any recurring cycle. Learning trigonometry will help you understand visualize and graph these relationships and cycles. If you combine studying on your own with staying focused in class, you’ll 19-05-2021, 17:00 Exponents and Logarithms 508 0 Logarithms may look difficult to use, but just like exponents or polynomials, you just need to learn the correct techniques. You only need to know a couple basic properties to divide two logarithms of the same base, or to expand a logarithm that contains a quotient. 19-05-2021, 09:50 Mathematics 293 0 A mathematician is an expert in the field of mathematics, which involves both deciphering theoretical abstract concepts and applying these theories to solve problems in engineering, economics, business, and other technical disciplines. What distinguishes a mathematician from other scientists and technical professionals is the passion for theoretical understanding, independent of how the 19-05-2021, 08:10 Probability and Statistics 534 0 Covariance is a statistical calculation that helps you understand how two sets of data are related to each other. For example, suppose anthropologists are studying the heights and weights of a population of people in some culture. For each person in the study, the height and weight can be represented by an (x,y) data pair. These values can be used with a standard formula to calculate 17-05-2021, 13:10 Multiplication and Division 426 0  16-05-2021, 04:30 Multiplication and Division 403 0 