solve online use of variables

A set of observations is called a called a collection of data. These observations should possess some common characteristics. They are recorded and used for further study. The quantities such as age, height and number of students are called variables..

Simultaneous Equations - Consider a linear equations in two variables , say, 3x - 2y = 5. It has an infinite number of solutions, some of these are x = 0, Consider a linear equations in two variables , say, 3x - 2y = 5. It has an infinite number of solutions, some of these are x..

An equation of one variable and of first order (i.e., its highest power is one) is called a Linear equation. Such an equation has only one solution. A solution is also called the 'root' of the given equation.An equation of one variable and of first order (i.e., its highest power..

Quantities such as height, weight, age, amount can have several different values. Quantities which can assume different numerical values are called variables. Variables are of two types: (a) Continuous (b) Discre..

A solution of a linear equation is the value of the variable which makes LHS = RHS. It is also called the "root" of the equation. A solution of a linear equation is the value of the variable which makes LHS = RHS. It is also called the "root" of the equation. To solve..

Choose the equation wherein you would isolate a variable easily so that substitution method can be used to solve the linear system. - 5 x + y = -35 [Equation 1] 5 x + 4 y = 38 [Equation 2] => Equation 1 or Equation 2 or Both Equation 1 and Equation 2 or Neither Equatio..

Identify the equation wherein you would isolate a variable easily so that substitution method can be used to solve the linear system. b - a 3 = 8 [Equation 1] 12 a - 15 b = 0 [Equation 2] => Equation 1 and Equation 2 or Equation 2 only or Equation 1 only or Neither Equ..

Which of the following statement(s) is/are true? I. Correlation is used to determine the existence of a relationship between variables. II. Correlation is used to describe the type of relationship between variables. III. Regression is used to determ..

What formula is used to gain information about a sample mean when the variable is normally distributed or when the sample size is 30 or more? => z = X - μ σ or z = X ‾ - μ σ n or z = X ‾ - μ σ n or z = X - μ σ..