If you are given information about one of the variables, you should be able to use algebra to find the other variable. Adding or subtracting unlike signs: Subtract the two numbers and use the sign of the larger, more precisely, the sign of the number whose absolute value is largest. Multiplying or dividing like signs: The product or quotient of two numbers with like signs is always positive. Multiplying or dividing unlike signs: The product or quotient of two numbers with unlike signs is always negative.
M ultiplication and D ivision left to right 4. A ddition and S ubtraction left to right. Simplify both sides of the equation. Write the equation as a variable term equal to a constant. Divide both sides by the coefficient or multiply by the reciprocal.
Three possible outcomes to solving an equation. One solution a conditional equation b. No solution a contradiction c. Every number is a solution an identity.
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Homework Help for Percentages. A percentage represents a fraction with as the denominator. Percentages are written using the percent sign (%). For instance, the fraction 50/ is written as 50%, and the fraction 8/ is written as 8%.
Percent or the percent sign (%) means “per ,” so 5% means the same as 5/, 31% means 31/ and so on. Many common fractions can be expressed as percents by converting the fraction in terms of 1/, so ½ is 50/ or 50%, ¾ is 75/ or 75%, 4/5 is 80/ or 80%. Homework Help; Specialized Programs. ADD/ADHD Tutoring Programs; Math Review of Applications of Percents The definition of percentage and the percent sign % is per It is a fraction or a ratio. Since money in the US and Canada is based upon the dollar, which is divided into fractions of 1/, percentages are a useful tool.
Math homework help. Hotmath explains math textbook homework problems with step-by-step math answers for algebra, geometry, and calculus. Online tutoring available for . A math teacher, Dr. Pi, computes a student’s grade for the course as follows: a. Compute Darrel's grade for the course if he has a 91 on the homework, 84 for his test average, and a 98 on the final exam.