Range in Math

Range in Math

Interval (also known as range)
The range is the distinction between the maximum and minimum value in the set of the data
Steps to find the Range:
Step1: First order the data from smallest to greatest (ascending order).
Step2: Subtract the smallest value from the largest value in the set.
Example 1:
The Jaeger family drove through 5 Midwestern states on their summer vacation. Gasoline prices varied from state to state. What is the range of gasoline prices?
35,79, $8
Solution:
Step 1: writing in ascending order: 3,5, 7,8, $9. This could also help us on figuring out percentages
Step 2: Range = 9−3= $6
Range is $6

Help with inverse of matrix

Introduction for inverse of matrix:
The inverse matrix method are formed on the basis like X=A-1B which is formed for finding the matrix X with the equation AX = B It is used in solving the linear system of equations. Here A-1 is the inverse matrix representation. If we have to find the inverse of the 3 x 3 matrix, which uses 2 x 2 matrix for finding the determinant value for the 3 x 3 matrix.

If we have to find the inverse of the 4 x 4 matrix, which uses 2 x 2 matrix and 3 x 3 matrix for finding the determinant value for the 4 x 4 matrix. This could also help us on harcourt math book.

Help with proportions and ratios

Proportions and Ratios
The ratio 50/15 may be simplified and written as 10/3.
50/15=10/3
An equation that state that the two ratios are equal is called a proportion. The preceding proportions may also be written in the form 50:15=10:3.
Percentage:
A percentage is a way of expressing number as a fraction of 100 (per cent meaning "per hundred"). This could also help us on inverse tangent calculator
Ratios:
The ration of two numbers p and q(q≠0) is the quotient of the numbers. The numbers p and q referred to as the terms of the ratio.

Help with Composite Number

Introduction to composite number:
In this section let me help you on what is composite number? A composite number is a positive integer which has a positive divisor other than one or itself. In other word, if n > 0 is an integer and there are integers 1 < n =" a" href="http://en.wikipedia.org/wiki/composite">composite number.

The numbers one is a unit – it is neither prime nor composite. For example, the integers 14 is a composite number because it can be factored as 2 × 7. Likewise, the integer 2 and 3 are not composite numbers because each of them can only be divided by one and itself. This could also help us on direct variation