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

Help with composite number

Introduction to composite number:
There are different type of numbers and here we need to fiind what are the composite numbers between 1-100, before seeing that let us learn what is composite numbers and the different
types of numbers.

The following are the types of numbers:

• Natural Numbers
• Whole Numbers Integers
• Rational Numbers
• Real Numbers
• Odd numbers
• Prime numbers
• composite numbers

Composite numbers are which can be divide by more than 1 number except 1 and the number itself. This could also help us on how to do long division. The numbers which has more than two factors( 1 and the number itself) is called composite number

Help with simple algebra

Today let me help you on simple algebra. :et me explain this to you with the help of following example

Find algebra word problems on solving equations.

Question: Which of the following equation have x=2, y=3 as solution ?
(a) 8x-y = 12 (b) 2x+3y = 10

Answer: (a) Substitute x=2, y=3 in 8x-y=12
8(2)-3=12
16-3=12

x=2, y=3 is not a solution of 8x-y=12
(b) Substitute x=2, y=3 in 2x+3y=10. This could also help us on horizontal line test
2(2)+3(3)=10
4+9=10

x=2, y=3 is not a solution of 2x+3y=10.

Composition of Functions

Introduction for composition and invertible function:

In this article let me help you on composition of functions. An invertible functions for ƒ is a function from B to A, with the property that a round trip (a composition) from A to B to A returns each element of the first set to itself. A functions ƒ that has an inverse is called invertible; the inverse function is then uniquely determined by ƒ and is denoted by ƒ⁻¹. Function composition is the applications of one function to the results of another. For instance, the functions f: X → Y and g: YZcomprised by computing the output of g when it has an argument of f(x) instead of x

Q. Composition of a function as : h(x)= x2+2x-3. determine dom of f, dom of gand dom of h. This could also help us on intermediate algebra help

Answer 1

Composition is the operation of taking the output from one function and using that as the input to a second function. this site!

How to find percentage of a number?

Today let me try to help you on how to find percentage of a number. Since we have studied all about percentage let me give you an example to help you on this better. Keep reading if you still have any doubts do leave your comments.

Here is an illustration to show how to find percentage of a number.

Example : Calculate 25% of 70

Solution :

Given Number has to be written as,

25  x 70
100

or it can be simplified as

 1  x 70
4

 70   This could also help us on transformations math
4

= 1.75

algebra calculator

Introduction of free online algebra calculators:

Algebra Calculator is the part of mathematics which always deals with the study of operations such as addition, subtraction, multiplication and division. Algebra includes variables, constants, polynomials, exponents, terms and expressions. Basic operation of algebra is to balance the expression on both sides. This article free online algebra calculator briefly tells you the operations of algebra with various examples.
Examples of Free Online Algebra Calculators:

For free online algebra calculators consider the following examples.

Ex 1: Simplify the expression:

10(a-5) + 7b-4(2a -3b+5) +15

Sol : = (10a-15) + 7b-4(2a -3b+5) +15.

= 10a-15 + 7b -8a+12b-20+15.

= 10a-8a+7b+12b-15-20+15. This could also help us on factors of 25

= 2a+19b-20.