Properties of Addition

Introduction to addition problems:
Properties of Addition is a basic operation in mathematics; addition has simple rules. Addition role in math problems are important in most of the problems. Addition is a arithmetic operations it can be done in many math formulas and in upper grade problems addition is continued.
Example:

5+ 3 =8

Properties for Addition:
Commutative Property:
commutative property for two numbers are to be added, the sum will be same value of an order with the addends.
Example: 6 + 5 = 5 + 6

Associative Property:
When three or more numbers are to be added, the sum will be same value of a group associate for addends.
Example: (5 + 6) + 7 = 5 + (6 + 7) This could also help us on less than or equal to symbol

Additive Identity Property:
The sum of any number with a zero is any number .
Example: 3 + 0 =3

Distributive Property:
Distributive property, for the two numbers operators with whole will be same when the operator done with distributive.
Example: 3 * (4 + 5) = 3*4 + 3*5

What is a Linear Equation?

Introduction to Linear Equation:

In this section let me help you go though on what is a linear equation. linear equation is an algebraic equation in which each term is either a constant or the product of a constant and (the first power of) a single variable.
Linear equations can have one or more variables. Linear equations occur with great regularity in applied mathematics. While they arise quite naturally when modeling many phenomena, they are particularly useful since many non-linear equations may be reduced to linear equations by assuming that quantities of interest vary to only a small extent from some "background" state.

Solving One-step Linear Equations

solve x + 6 = –3

We want to get "x" on one side of the equal sign, and some number on the other side. Since we want x on the one side, this means that we don’t need the "plus six" that's currently on the same side as the x. Here 6 is added to the x, hence we need to subtract to get rid of it. That is, we need to subtract 6 from the x in order to "undo" having added a 6 to it. This could also help us on how to graph linear equations

Solution:

x + 6 = -3

-6 = -6

x =-9

The value of x = -9

how to find standard deviation

Introduction of how to find standard deviation help:

Let us see how to find standard deviation. The idiom of standard deviation is used within the statistics. It is helped to establish the population examples in statistics. The standard deviation is ensuing from the variance of the population. The standard deviation is helped to approximation the many number of populations.

How to Find Standard Deviation:

Let us see how to find standard deviation. Normally, the standard deviation follows some steps, which are shown below. The steps are helped to find the standard deviation.

Step 1: Identify the mean and variance of given data. For example, This can also help us on mobile field solutions

x	M	(x-m)	(x-m)2
5	4	1	1
4	4	0	0
4	4	0	0
3	4	-1	1

Step 2: Identify the sum of (x-m)².
1+1+0+0 = 2.

Step 3: The known number of N=4, Find N-1.

4-1 = 3.

Introduction to Causes of Water Pollution

Introduction to Causes of Water Pollution:
Water is the most important element in the biosphere because it sustains all sorts of life on the planet earth. Water pollution may be defined as alteration in the physical, chemical and biological characteristics of water, which may cause harmful effects on human and aquatic life.
Sources of Water Pollution
* Factories

* Refineries
* Waste treatment facilities
* Mining
* Pesticides, herbicides and fertilizers
* Human sewage
* Oil spills
* Failing septic systems
* Soap from washing your car
* Oil and antifreeze leaking from cars
* Household chemicals
* Animal waste. This can also help us on polythene

Introduction for percent difference

Introduction for percent difference:

The word “percent” is consequent from Latin. It was at first “per centum”, which means “by the hundred”. Thus the statement is frequently complete that “percent means hundredths”.

Percentage deals with the collection of decimal fraction whose denominators are 100 – that is, fractions of two decimal spaces Since hundredths be used so regularly, the decimal position was drop and the symbol % be located after the number and understand “percent”. Thus, 0.25 and 25% represent the same value, 25/100. The first is read “25 hundredths”, and the second is read “25 percent”. Both mean 25 parts out of 100.

Originally, percent is used in discussing relative values. For example, 25 percent may convey an idea of relative value or relationship

Find Percent Difference Steps and Example Problems:

Steps for find percentage difference:

STEP 1: Start the percentage x/100 = is/of. X is the percentage (over 100 of course), "is" refers to fraction, and "of" refers to entire.

STEP 2: In the question "80 is to 40 percent of what number? x=40, is=40 ("80 is"), and of = the unknown ("of what number"). Therefore write 40/100=80/x. This will also help us on pyramid of numbers

STEP 3: Cross multiply. You will have a constant value on one side and multiply a variable on the other side. Here it is 40x=8,000.

STEP 4: Solve for x. Here, x = 8,000/40 = 400, So x = 400.

Solving Linear Inequalities

Introduction to solving linear inequalities:

Solving linear Inequality means that comparison of two values or expressions. An linear inequality means that a relationship between two quantities that are not equal. In equations, one side is equal to the other side. To solving the linear inequalities, multiply, divide, or subtract the both side of the inequality equation to simplify the equation.

Solving Linear Inequalities Properties

Let a, b and c be real numbers.

1. Transitive Property

If a <>

2. Addition Property

If a <>

3. Subtraction Property

If a <>

4. Multiplication Property - This will also help us on graphing linear inequalities

i. If a <>

ii. If a <> c*b

Help on Perimeter of circle

Introduction to Perimeter of Circle:
The Circle is a two dimensional shapes. The out side distance of the circle is know as circumference of the circle. It is also called as perimeter of circle. The distance from the center to points on boundary is constant. That distance called as radius of the circle. The diameter of circle is square of radius. It is also called as chord.

When we look at the figure.. we will come to know how to calculate are of circle perimeter. and this also helps us on what is the circumference of a circle.

The distance around a circle is called the circumference. The distance across a circle through the center point is called diameter. (Pi) is the ratio of the circumference of the circle is called diameter.