Test on 07th grade math

Introduction to practicing grade 7 math:

In mathematics 7th grade math test is a level where we can learn about the entire basic maths. In grade 7 the following topics are processed. They are integers, fractions, algebraic formats,geometry shapes,different types of graphs, measurements,probabilities and other all number system.

Description to Practicing Math Problems for Grade 7:

The following topics are covered under grade 7 which is very easy to understand as well as for practicing those problems,they are

* Number system
* Algebra
* Geometry
* Probability
* Measurements. To get more help on Study material

General experiments for grade 7 math probability:

* Tossing two coins ( totally two possible outcomes)
* Rolling the two dices( totally 36 possible outcomes)

Fraction Circles

Definition of Circle:
In this article let me help you with fraction circles. A circle is a simple shapes of Euclidean geometry consisting of those points in planes which are equidistant from a given point called the center. The common distances of the points of a circle from its center is called its radius.
Circles are simple closed curve which divides the plane into two regions, an interior and an exterior

Definition of Fraction:

Fraction:
Fraction is a one form in numbers representation which is used to represent a part of whole. For examples, there are 5 parts of apples, in which 3 of them are taken. This could also help us on geometry questions. It can be represented in the fraction form as . It represents the two different values that are called as denominator and numerator. Bar symbol used to separate these numerator and denominator. In the given example 3 is numerator and 5 is denominator.

Help with area of shape

Introduction of solve find area of shape:
Area is a quantity expressing the two-dimensionals size of a defined part of a surface, typically a region bounded by a closed curve. The surface areas of a 3-dimensional solid is the total area of the exposed surface, such as the sum of the areas of the exposed sides of a polyhedron. Area is an important invariants in the differential geometry of surfaces

Example Problems of Solve Find Area of Shape:
Example 1:
Find the surface area of sphere with radius 8.7 meter?
Solution:
Step 1: Surface area of sphere = 4 pi radius 2.
Step 2: We know that radius = 8.7 m.
Step 3: Plug the radius value into the formula. This could also help us on angle of refraction
Step 4: Volume of sphere = 4 3.14 8.7 8.7
Step 5: So, we get 950.66 m2.

Help with Factoring

Factoring Help - Example Problems
In this article let me help you on factoring help with the help of following example.
Example: 1

Solve the following quadratic function f(x) = x2 + 15x + 54 = 0, with the help of factoring method.

Solution:

Let us first split the middle term +15x as 9x+ 6x

[Because (9x) × (6x) = 54x2 and 9x+6x = 15x].

So,

f (x) = x2 +9x +6x + 54

f (x) = x (x + 9) +6 (x +9)

f (x) = (x + 9)(x+ 6)

Now, f(x) = x2 + 15x + 54 = 0 can be rewritten as (x + 9)(x+ 6) = 0. This could also help us with exponential graph

So, the values of x for which x2 + 15x + 54 = 0 are the same for which (x + 9) (x+ 6) = 0. This could also help us on circle area

That is either (x + 9) = 0 or (x+ 6) = 0

Now, x +9 = 0 gives

x = -9

x + 6 = 0 gives x = -6

Help with rational inequalities

Today let me help you with rational inequalities. Since we had studied about rational numbers let me briefly give you an example to help you understand better.

Inequalities:

An inequality means, two values are not equals. That is A is not equal to B. The following symbols are used in denoting the inequality.

A <>

A > B. it says that A is greater than B.

These are called as the strict inequality.

A>=B. it says that A is greater than or equal to B.

A<=B. it says that A is less than or equal to B. This could also help us on projectile motion formula

Here we are going to learn, solving rational inequalities.

how to find percent

In this article let me help you on how to find percent. Let me show you a example on thii to help you better. Keep reading if you still have any doubts on this do leave your comments.

Here is an example 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 
4

= 1.75

Practice .... .. This could also help us on percent to fraction calculator

1) Calculate 42% of 60

2) Calculate 71% of 86

3) Calculate 152% of 74

Free algebra helpa

Introduction for solve algebra :
In this section let me help you learn algebra online free, in this we are solving equations and evaluating function by the help with arithmetic functions, we denote variables like x,y in systematic equations to denote numbers. Major Symbols in an algebraic expression are called variables An Algebraic expression of the form axn is called a monomial in x. In algebra 1 contains evaluations and solving for different variables, an algebraic equations which are having common solution set is called linear equations.

How to Solve Algebra 1 Homework Problems:
This could also help us on variance formula . This could also help us on factors of 12. In solve algebra 1 we have to solve for variables for further steps we eliminate for variables and performing arithmetic in equations and finally solve the equation for variables.by evaluating step by step we have to do following process given in example problems

Free algebra worksheets

Algebra problems and worksheets:
In this section let me help you on free algebra worksheets. The basic arithmetic method such as adding, subtracting, multiplying and dividing is called algebra. Algebraic expression is used in variable, constant, coefficients and exponents, conditions and expressions. The basic concepts of the algebra is balancing the algebraic equations on equal sides. The algebraic equations used in such as commutative, associative, identities and inverse.
Variable:
The algebraic variable is alphabetic characters. The variables are a, b and c.
Let us see some worksheets on algebra problems.

Worksheets on Algebra Problems:

Worksheet for set of questions for students:
A worksheets is a sheet of paper, or on a computer, on which problems are worked out or solved and answers recorded. This could also help us on area of an equilateral triangle
Worksheet is recording work:
A worksheet of documents used for keeping a proof of work done or scheduled
Worksheet for draft:
A worksheet of paper used for making a rough plans or preliminary notes.

Define prime number

Introduction to large prime numbers:
In this lesson let me help you on how to define prime number. In mathematics, a prime numbers (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself. Infinitude of prime number exists, as demonstrated by Euclid around 300 BC, although the density of prime numbers within natural numbers is 0. The number 1 is by definition not a prime number. Let us study about the large prime numbers

In mathematics, a prime numbers (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself. This could also help us on volume of a circle formula
The first twenty-five prime numbers are:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
The fundamental theorems of arithmetic establishes the central role of primes in number theory: any nonzero natural number n can be factored into primes, written as a product of primes or powers of different primes

Sphere volume formula

In this section let me help you on sphere volume formula. keep reading if you still have any doubts do leave your comments.

Area of sphere:

Area of sphere means the surface of the sphere. The formula to find the surface area of sphere is given as,

Surface area of sphere = 4 ∏ r²

Here, r = radius of the sphere.

Volume of the sphere:

The formula for finding the volume of sphere is given as, This could also help us on solving equations with fractions

Volume of sphere = (4∏r³)/3

Here, r = radius of the sphere.

college algebra help

Introduction to college algebra help online:

In this section lets discuss on college algebra help. College algebra problems have different types of topics. The college math problems we have the following sets, logic, real number systems, functions and their graphs, probability and Statistics and some topics from algebra and geometry. Thus it also gives much importance for all topics.

Online Math problem is expected to be one of the smart trials, as it supplies the part an excellent chance to work out. The event is all about trying the originality and logical skills of a person and making mathematics fun.

In this session we would also discuss about the college algebra calculator.

Help on Math Tutoring

Today let me help you understand on math tutoring. In a math addition problems , subtraction, measurement, number sense, multiplication, functions, adding and subtraction of decimals, fractions & mixed numbers, division, algebra, geometry, algebra function, probability and statistics number using words decimals. Tutor is a person who teaching a student. It is part of coaching apart from regular studies which help students to get extra knowledge

Example Problems for Median - Mathematical Tutor:
Example problem:

Find the median value of 1907, 347, 447, 222, 995, 589, and 665
Solution:
We must arrange the values from lowest to highest, This could help us on free online tutoring
222, 347, 447, 589, 665, 995, 1907
Here the middle value is 589
Result is 589.

online statistics homework

Introduction to statistics homework online tutor
In this lesson we are going to study on online statistics homework.Study on Statistics is the formal science of creating efficient use of mathematical data between to groups of individuals. We can study the statistics in online by the tutors. So the online is very helpful to clear the doubts. Now we will see the examples and homework problems for statistics given by online tutor.

Example
Find out the Median for the following sequence. 15,17,23,26,28.
Solution
Median is the middle element of the above sequence. This could also help us on trigonometry tutoring free
Here the middle value is 23.
Therefore the solution is 23.

online geometry help

Introduction to free online geometry help:

Today let me help you on geometry help free. Here we are going to see the article as free online geometry help, Generally geometry is used for learning shapes and their properties of the objects ,it will be classified as two types plane geometry and solid geometry ,plane geometry is used for study about the flat shapes objects like lines ,circles and triangles etc(usually plane means we called as a flat surface ,these surfaces have only two dimension such as length and height ) and solid geometry is used for study about the three dimension objects like cubes and pyramids.
Online:

This will also help you on geometry problems free. Online means it is one of the new way of connectivity it is used for connect the two or more person in a same time from that they do the conversation through the computer, web like that. Here the student can receive help from the tutor, let us see how they work.

Note on mixtures

Introduction to mixtures
In this section let me help you on mixtures.A material system which is made up by two or more different substances which are mixed together but are not chemically combined is called a mixture. Mixture is defined as the physical combination of two or more substances of which identities are retained. Separation of mixtures is a process which is used to transform a mixture of substances into distinct products.
I hope you understood my information on this article.Keep reading may be in the next session leet me help you on statistics and probability.This could also help us on Multiplication chat

Types of Mixtures

Mixtures can be of two types: homogeneous and heterogeneous. A type of mixture in which has uniform composition is called a homogeneous mixture. A type of mixture whose composition can be easily identified, having two or more phases is called a heterogeneous mixture. Example of homogeneous mixture is air which is a mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances. A homogeneous mixture in which both a solute and solvent are present is also called a solution

Define Standard Deviation

Introduction for Learning Standard Deviation:
In this article let me help you on define standard deviation. If a student wants to learning standard deviation, he should have a clear idea about in arithmetic mean and deviation. In this, we are going to learning standard deviation with some example problems as shown below.

Definition for Standard Deviation:
A standard deviation is a statistical data of measure which can variability and spread. Standard deviation is a deviation of root mean square for the values in the arithmetic mean.

The following is the practice problems for learning define standard deviation.
Calculate the standard deviation for the given values 13, 33, 19, 28, 9 and 30.This could also help us on permutation and combination
Solution:
= 9.82
Calculate the standard deviation for the given values 38, 11, 8, 31 and 22.
Solution:
= 12.78
Calculate the standard deviation for the given values 29, 30, 20 and 17.
Solution:
= 6.48

Note on weighted average calculation

In this lesson let me help you on weighted average calculation. Before i go in for examples, let me explain what does weighted average mean?

What Does Weighted Average Mean?
An average in which each quantity to be averaged is assigned a weight. These weightings determine the relative importance of each quantity on the average. Weightings are the equivalent of having that many like items with the same value involved in the average.

Weighted Average Calculation - Example

Ex 1 : Find the weighted A.M. from the following data.

Tom bought 20 science books @ 10each 15Bibles@ 8 each and 15 story books @ $5 each

Sol: Here weight = number of books and cost of the books = x

Name of the books cost (x) No. of books (w) wx Science $10 20 200
Bibles $ 8 15 120
Story books $ 5 15 75
Σw= 50 Σwx = 395
Hence weighted A.M. = 395 / 50 = $ 7.90. This can also help us on air miles calculator

Introduction to minutes to hour converter

Introduction to minutes to hour converter:

In this lesson let me help you on minutes to hours converter.Initially we calculate time from the shadow. Second is the unit of the term time. A basic unit of time division is the radian. At present clock or watch is one of the times calculating devices. Clock is one of the tools to measure the time duration of an event or incident. Time conversion is start from seconds and end with a year. Let us see minutes to hour converter in this article.

Converter Table:

60 micro second 1 millisecond
60 millisecond 1 second
60 seconds 1 minute
60 minutes 1 hour
24 hour 1 day
7 day 1 week
4 week 1 month
52 week 1 year
12 month 1 year
365 days or 366 days 1 year
This could also help us on polar and nonpolar

Note Area of a Hexagon

Introduction for find the area of a hexagon

* In geometry, a hexagon is a polygon with six edges and six vertices. A regular hexagon has Schläfli symbol {6}.

* A regular hexagon has all sides of the same length, and all internal angles are 120°. The total of the internal angles of any hexagon is 720 degrees.
* A regular hexagon has 6 rotational symmetries (six lines of symmetry) and 6 reflection symmetries (rotational symmetry of order six), making up the dihedral group D6.

Example Sums for Finding Area of Hexagon Example 1:

Find the area of a regular hexagon whose side length is 9cm?

This can also help us on height in inches

Solution:

The formula to find the area of a hexagon with side length 2cm is

= 3 * square root of 3 * 9 2 / 2

= 3 * 1.732 * 81 /2

= 210.438cm 2