Thursday, September 23, 2010
how to do math problems
Tuesday, September 21, 2010
0 factorial
0 factorial
Monday, September 20, 2010
linear programming word problems
Let us take 2 variables x and y to represent the number of chairs & tables respectively.
Hence the price of x tables = 1200x & the price of y chairs = 500y.
Here the total investment cannot be more than 50,000, therefore,
The total price = 1200x + 500y ≤ 50,000. This is the 1st constraint inequality.
Here, hence the storage capacity is for 100 pieces, we have x + y ≤ 100. This is the 2nd constraint equation. Hence the number of chairs & the number of tables non-negative, we have x ≥ 0, y ≥ 0.
Now, profit on y chairs = 75y. & the profit on x tables is 180 xs
Here, the objective is to maximize the profit, so the objective function is 180x + 75y.
Hence the linear programming model is given by:
Maximize Z = 180x + 75y
Subject to the constraints
1200x + 500y ≤ 50,000
x + y ≤ 100
x ≥ 0, y ≥ 0.
Friday, September 17, 2010
poisson distribution table
The number of successes in a Poisson experiment is said to be as a Poisson random variable. A Poisson distribution is referred as a probability distribution of a Poisson random variable.
Thursday, September 16, 2010
probability equations
a) In the drawing club?
b) In the games club?
Probability Equations Solution:
The total number of learner in the class = 60
Number of learners in the drawing club = 10
Number of learners in the games club = 15
The probability of solving that the selected learners in the drawing club is,
P (students in drawing club) = 10 / 60
= 1/6
= 0.17
The probability of solving that the selected learner in the games club is,
“P” students in games club) = 15 / 60
= ¼ = 0.25
Tuesday, September 14, 2010
frequency distribution table
Frequency distribution table is a tabulation of the values that 1 or more variables take in a sample. Each entry in the frequency distribution table contains the frequency or count of the occurrences of values within a particular group or interval, & in this way the table summarizes the distribution of values in the sample.
Frequency distribution table is used to rank the disorganized data from the highest to the lowest. A frequency distribution table is an organized tabulation of the number of individual scores located in each category on the scale of measurement. Frequency distribution table contains at least 2 columns – 1 for the score categories (X) & another for the frequencies (f).
Frequency distribution table can be represented in a number of ways.
Group frequency table as Regular frequency table
Group frequency graph as Polygon; The bar graph; Pie Chart; Histogram
The bar graph is used only when the data or measurements are from a nominal or an ordinal scale. Histogram - Interval or Ratio data, Polygon - Interval or Ratio data
Group frequency distribution table is used when the original scale of measurement consists of more categories which can be listed in a regular table, 20 or more categories is generally considered too much. The easiest & the most complete way to present a set of N= 7 scores is to list each individual score.
Thursday, September 9, 2010
length of arc
Thursday, September 2, 2010
factors of 45
The 6 factors of 45 are 1, 3, 5, 9, 15, & 45.
The factor pairs of 45 are 1 x 45, 3 x 15, & 5 x 9.
The proper factors of 45 are 1, 3, 5, 9, & 15 or if the definition you are using excludes 1, they are 3, 5, 9, & 15.
The prime factors of 45 are 3, 3, & 5.
There is repetition of these factors, therefore if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed.
The 2 distinct prime factors of 45 are 3 & 5.
The prime factorizations of 45 are 3 x 3 x 5 or, in index form 32 x 5.
There cannot be common factors, a least common multiple of a single number or a greatest common factor because "common" refers to factors or multiples that 2 or more numbers have in common.
Wednesday, September 1, 2010
log identities
An integer base or number base is the power or exponent to which the base must be raised in order to provide that number is said to be as natural log identities. Real-valued function of a real variable also applied the natural log identities. Inverse function of the exponential function is applying natural logarithm function.
The log identities are written as:
logex or ln x
Where e = 2.71828182846.
The Best Example of log identities
In that case we need to apply the addition law of natural logarithms,
Such as, logeA + logeB = loge (A x B).
1. Solve the log identities problem using natural log identities, given ln(4 x 4) =?
Given problem is here to, ln (4x4)
Log identities for the given problem is, ln (x * y) = (ln x) + (ln y).
ln (4 x 4) = ln4 + ln4
Plug the ln2 and ln4 values in the log identities,
Then add the values,
= 1.386 + 1.386 = 2.772 = (2 x 4) = 2.772.
In our next blog we shall learn about isoelectronic series I hope the above explanation was useful.Keep reading and leave your comments.
Tuesday, August 31, 2010
substitution method calculator
Substitution method calculator used to solve an algebraic expression where we replace 1 variable by an equivalent in terms of another variable. Substitution method calculator works to get the equation & solve for the variable & substitutes the values.
Solve by using substitution method calculator.
8x + 9y = 4, - 9x + y = 20.
Solution:
8x + 9y = 4 ---- (1)
- 9x + y = 20 ---- (2)
From equation (2), we get
- 9x + y = 20
y = 20 + 9x so plug this y = 20 + 9x in equation 1 & solve for x
8x + 9 (20+ 9x) = 4
8x + 180 + 81x = 4
89x + 180 = 4
89x = - 176
x = - 1.97 Plug this x value in equation 2 to find out y value.
- 9 (- 1.97) + y = 20
17.79 + y = 20
y = 2.21
Answer is x = - 1.97, y = 2.21.
In our next blog we shall learn about number line generator. I hope the above explanation was useful.Keep reading and leave your comments.
Monday, August 30, 2010
line plot example
A line plot helps us to find data on a number line with x or other marks to show frequency
1 type of graph is a line plot. A line plot provides an easy method to organize data. They are usually applied when there is 1 group of data, & fewer than 50 values.
A line plot includes of a horizontal number line, on which each value of a set is denoted by an x over the corresponding value on the number line. The number of x's above each score indicates that how many times each score occurred. In our next blog we shall learn about line plot worksheets I hope the above explanation was useful.Keep reading and leave your comments.
Saturday, August 28, 2010
5 grade math
5th graders receive their 1st basic geometry problems & by the end of the school year they should be able to identify & categorize triangles by their properties & measure & construct triangles & angles with a protractor. They will also learn about tessellations, planes, & grid coordinate systems.
Before advancing to the 6th grade, students will design surveys & try to collect data & adequately record it using graphs & diagrams. The 5th grade also prepares learners to make appropriate predictions when presented with sufficient background information on a given situation.
Many 5th grade math students are able to earn a passing grade in their math classes without fully understanding the concepts which they have been taught. It's critical for parents to monitor their kid's progress. Some math learners can slip by without showing major signs of confusion. This means that even if your kid does not ask for help with their 5th grade math they could still have skill gaps. These skill gaps will interfere with success in 6th grade math.
Math assessment tests are 1 method for parents to learn how much their kid truly gained from grade 5. These assessments test are available online through Internet tutoring centers. Additional information on this math subject can be found in the math section of online math tutoring website.
In our next blog we shall learn about 4 grade math I hope the above explanation was useful.Keep reading and leave your comments.
Thursday, August 26, 2010
average deviation
The individual values from the median or from the mean’s averages are known as the Average absolute deviation. Average Deviation is a measure of dispersion.
In our next blog we shall learn about adding fractions calculator I hope the above explanation was useful.Keep reading and leave your comments.
Wednesday, August 25, 2010
equivalent fractions worksheets
Tuesday, August 24, 2010
Prime Factorization calculator
24 =2 x 2 x 2 x 3= 23 x 3
72= 2 x 2 x 2 x 3 x 3 = 23 x 32
98=2 x 7 x 7= 2 x 72
Monday, August 23, 2010
different types of lines
Let us learn about line & different types of lines.
- Parallel line,
- Perpendicular line, and
- Intersecting line.
In our next blog we shall learn about axis of symmetry formula I hope the above explanation was useful.Keep reading and leave your comments.
Saturday, August 21, 2010
area of cube
Friday, August 20, 2010
mean deviation
In our next blog we shall learn about molar volume I hope the above explanation was useful.Keep reading and leave your comments.
Thursday, August 19, 2010
the area of a circle
Solution:
We know the formula for finding the area of the circle =π r2
Here r = 14 meter,π = 3.14, substitute r and π value in the above formula we get
Area = 3.14 * 142
Area = 3.14 *14*14
Simplify the above we get
Area = 615.44 meter square
In our next blog we shall learn about statistics mean I hope the above explanation was useful.Keep reading and leave your comments.
Wednesday, August 18, 2010
addition properties
add the hibiscus flower given in picture.
What is the value of ‘x’ of an inequality expression x + 1 > 3.
Solution:
Given,
Inequality x + 1 > 3
For finding the value of x, consider it as equality.
That is , x + 1 = 3
X = 3 -1
X = 2
For x= 2 the expression is equality. For inequality the value of x should be greater than 2.
Answer: x = 3 and above.
Tuesday, August 17, 2010
1 gallon how many litres
Hi Friends!!!
Let us learn about 1 gallon how many litres?
Convert 11 U.S gallons to litres.
Solution:
We know that 1 U.Sgallon = 3.785411784 litres.
Therefore 11 U.Sgallon = 11 x 3.785411784 litres.
= 41.69litres.
Our article will help fifth grade math student to solve math problems. I hope the above explanation was useful. Keep reading and leave your comments.
Monday, August 16, 2010
Surds
Let us learn how to do surds?
Solution : First we simplify the surds √32 and √50
√50 = √25x2 = 5√2
Now (5 + √32) – (12+ √50)
= 5 + 4√2 –(12 +5√2)
= 5 + 4√2 -12-5√2 Here the surd √2 is common term so like surds
= 5 -12 + √2( 4-5)
= -7 - √2
I hope the above explanation was useful.Keep reading and leave your comments.
Friday, August 13, 2010
Einstein's concept of non-euclidean
Einstein came along and discovered
that these non-Euclidean geometries were just the thing to describe
the real-world interactions of objects with mass - that is, to
describe gravity. examples on math forum; This is a case where the mathematical system was
invented with no consideration of the real world (and therefore no
faith element), but it turned out that this system does appear to
describe the real world.
The experiments to show that Einstein's theory of general relativity
do describe the real world better than any other mathematical system
are very tricky; it is still possible that another system would do
better. We can be absolutely sure that the results of general
relativity theory follow from its assumptions; the only question is
whether or not those assumptions match the way the real world is.
more examples on online math forum.
law of trichotomy
The law of trichotomy still isn't covered. It can be split into two parts: at most one of the three cases can occur, and at least one of the three cases occurs. more examples on math forum; The first can be stated as an axiom of addition as
It is not the case that x = x + y.
And that says it is not the case that x > x. The other half requires the axiom
For each x and y, either x = y or there is some z such that x + z = y, or there is some z such that x = y + z.
With these axioms, all the properties of magnitudes needed in the first few books of the Elements can be proved. For instance, we can prove
If 2x = 2y, then x = y.
more examples on free online math tutoring.
Euclid's square theory
The only figure defined here that Euclid actually uses is the square. The other names of figures may have been common at the time of Euclid's writing, or they may have been left over from earlier authors' versions of the Elements. Euclid makes much use of parallelogram, or parallelogrammic area, which he does not define, but clearly means quadrilateral with parallel opposite sides. Parallelograms include rhombi and rhomboids as special cases. get more examples on help in math; And rather than oblong, he uses rectangle, or rectangular parallelogram, which includes both squares and oblongs.
Squares and oblongs are defined to be "right-angled." Of course, that is intended to mean that all four angles are right angles. Sometimes Euclid's definitions are too brief, but the intended meaning can easily be determined from the way the definitions are used. In particular, proposition I.46 constructs a square, and all four angles are constructed to be right, not just one of them. read more on free math tutoring.
Online trigonometry help
Hi Friends!!! let us learn about Free trigonometry help
Online trigonometry is a branch of mathematics that studies triangles, particularly good triangles. Trigonometry deals with relationships between the sides and the angles of triangles, and with trigonometric functions, which depict those relationships and angles in mass, and the event of waves specified as measure and short waves.
Trigonometry homework is ordinarily taught in third hand schools either as a severalise education or as try of a precalculus layer. It has applications in both unalloyed math and applied science, where it is intrinsic in more branches of study and discipline. A grow of trigonometry, called spherical trigonometry, studies triangles on spheres, and is essential in astronomy and piloting.
In our next blog we shall learn about "online trigonometry homework help" I hope the above explanation was useful. Keep reading and leave your comments.
Figures and there boundry
The definition of figure needs to be fleshed out. In order to be a figure, a region must be bounded, that is, held in by a boundary. For instance, an infinite plane is unbounded, so it is not intended to be a figure. Neither is the region between two parallel lines even though that region has the two parallel lines as its extremities.
Other figures may be considered if other ambient spaces are allowed, although Euclid only uses plane and solid figures. online math forum; For a one-dimensional example, a line segment could be considered to be a figure in an infinite line with its endpoints as its boundary. Also, a hemisphere could be considered to be a figure on the surface of a sphere with the equator as its boundary. read more on math forum.
Plane surface elements
We see now that a plane surface, usually abbreviated to the single word "plane," is a kind of surface. Perhaps the remainder of the statement is a definition of content, but, if so, some words are missing.
One interpretation often given is that if a plane surface contains two points, then it contains the line connecting the two points. If that were the meaning, then it would be just as well to make that the explicit definition or to make it a postulate. examples on online math tutors ; But that does not seem to be Euclid's intent. His proposition XI.7 has a detailed proof that the line joining two points on two parallel lines lies in the plane of the two parallel lines. No proof at all would be necessary if that line were by definition or by postulate contained in a plane that contained its ends.
Note that a plane surface may be infinite, but needn't be infinite. It can be a square, a circle, or any other plane figure. more examples on math tutors online.
Geometrical point
A "point" in geometry can be thought of as something
with no length, width, or breadth. Everything in the real world has
some length, width, and breadth; we can only approximate a point by
making a dot with the sharpest pencil we can get. free math; (Physicists now
think that electrons may actually be points, but electrons obey the
laws of quantum physics, which is rather more complicated than
ordinary geometry.)
Still, somehow, geometry is very useful in describing the real world,
even though strictly speaking, it describes things that don't exist in
the real world. more explanation on math forum.
Counting calender numbers
In short, since the historical/calendric situation is so messy, I
believe that we should measure the millennium by noticing when the big
party is, and Prince doesn't party like it's 2000. I think we're in
the new millennium now.
It's also worth noting that since there was no year zero, the years
transitioning from BCE to CE are numbered ... -3, -2, -1, 1, 2, 3, ...
But some people, free math; notably astronomers, want the math to work out
better, so they actually use a year zero (... -2, -1, 0, 1, 2, ...),
so they're one year off from the rest of us in negative-land.
Learn more on online math forum.
Thursday, August 12, 2010
pre algebra homework help free
Algebra is the branch of mathematics concerning the study of the rules of operations and relations, and the constructions and concepts arising from them, including terms, polynomials, equations and algebraic structures. In mathematics, an expression is a finite combination of symbols that are well-formed according to the rules applicable in the context at hand. Symbols can designate values variables, operations, relations, or can constitute punctuation or other syntactic entities. Here we are going to study about how to solve the free pre algebra homework help and its example problems
free pre algebra homework help- Example Problems:
Consent to us observes some of the free pre algebra homework help problems.Free pre algebra homework help- Example 1:
Solve the following algebraic equations
4x + 4 = 12
Solution:
First we have to add both sides -4 we get
4x+4-4 = 12-4
In left hand side 2-2 is cancelling reaming we get
4x =-8
Divide both sides 4 we get
x = -2
Therefore the value of algebraic variables are x = -2
In our next blog we shall learn about algebra 2 homework I hope the above explanation was useful.Keep reading and leave your comments.
Wednesday, August 11, 2010
key math
Tuesday, August 10, 2010
Understanding math
It wasn't until I got to college, where they started dealing with the
components of molecules (atoms and electrons) that chemistry started
making sense. That's where they should have started, and there is no
telling how many kids had their interest in the subject killed by
starting at the other end.
Similarly, mathematics is, by and large, taught backward. You are
drilled on little skills, which turn out to be important, but without
ever really being shown the bigger picture, which would help you
understand _why_ they are important.
Can you imagine trying to teach
someone to play chess by having them practice moving the individual
pieces, math helper ;without ever letting them know that there was such a thing as
a chess 'game', or even letting them see a board with more than one
piece on it? Who would bother to learn it? That's something like the
way we currently go about teaching math. Is it any wonder that so many
students lose interest so early?
learn more on online math forum.
Learn to enjoy math
Actually, math starts to get _fun_ in 7th and 8th grade. You stop
dealing with particular numbers, and start dealing with patterns,
which are much more powerful, and therefore much more interesting. meet free online math tutors.
I don't believe that anyone can stay focused for long on a subject
that she doesn't like, so my advice would be to learn to enjoy math,
instead of looking at it as something that you're 'supposed' to learn.
more examples on math forum.
Philosophy of Mathematics
There is a philosophy whose purpose is to help people get past this
"freezing" business. It's called Zen Buddhism. (I know, that _sounds_
like a religion, but it isn't.) You can read a really nice, short,
simple introduction to the ideas of Zen Buddhism in a book called _Zen
in the Martial Arts_, by Joe Hyams. online math tutors ;(I know, that _sounds_ like it's
going to be a book about karate, or judo, but it isn't. At least, not
mostly.) It's a pretty popular book, so you should be able to find it
in most libraries or bookstores. It would be well worth your time to
read it.
This probably isn't what you wanted to hear, but it's better that you
should find out sooner rather than later. learn more with free online math tutoring.
Friday, August 6, 2010
Chess related to math
Welcome to free math tutoring, It's a little like what you do when you invent a board game like chess. You specify that there are such-and-such pieces, and they can move in such-and-such ways, and then you let people explore which board positions are possible or impossible to achieve. The main difference is that in chess, you're trying to win, while in math help, you're just trying to figure out what kinds of things can - and can't - happen. So a 'chessamatician', instead of playing complete games, might just sit and think about questions like this: If I place a knight (the piece that looks like a horse, and moves in an L-shaped jump) on any position, can it reach all other positions? What is the minimum number of moves that would be required to get from any position to any other position? Think, get more examples on free online math tutoring.
Introduction of Mathematics
I am your math helper,
mathematics is the derivation of
theorems from axioms.
So what does that mean?
It means that mathematics is a collection of extended, collaborative
games of 'what if', played by mathematicians who make up sets of rules
(axioms) and then explore the consequences (theorems) of following
those rules, more examples in math forum,
For example, you can start out with a few rules like:
A point has only location.
A line has direction and length.
Two lines interesect at a point.
Hope the above explanation was interesting, get connected with free math tutors online
multiply matrices
Let us learn about multiply matrices
If we multiply matrices, that must be present in same or different order. Let us consider we add matrix B by matrix A. If matrix A has 3X 3 orders, the matrix B also present in 3 X3 orders or other order like 2 X2. In matrix multiplication multiply every row of first matrix by every column of second matrix.
In our next blog we shall learn about ammonia solution I hope the above explanation was useful.Keep reading and leave your
Different numbers in India
The Hindu-Arabic numeral system is a positional decimal numeral system. Many of the countries adopted the Indian numerals.
Most of the positional base 10 numeral systems in the world have originated from India, where the concept of positional numerology was first developed. The Indian numeral system is commonly referred to in the West as the Hindu-Arabic numeral system or even Arabic numerals, since it reached Europe through the Arabs. you can find these examples of help in math numericals below,
I hope the above explanation was useful, math forum helps you with more examples.
Thursday, August 5, 2010
8th grade math worksheets
8th Grade Math Worksheets Example:
Example 1:Determine the distance between the points (-5, -5) and (1, 3).
Solution:
The distance d between points (-5, -5) and (1, 3) is given by
d = sqrt [(1 - -5) 2 + (3 - -5) 2]
Solve the above term.
d = sqrt (36 + 64) = 100
Wednesday, August 4, 2010
ln x
Let us learn about ln x
- For every x in the domain of f, f -1[f(x)] = x, and
- For every x in the domain of f -1, f[f -1(x)] = x
Differentiate Ln X:
Example 1: Differentiate ln xSolution: Let f(x)= ln x
Differentiating f(x), we get
f'(x) = 1/x
So, the solution is 1/x
Saturday, July 31, 2010
Factor by grouping
Factoring by grouping is usually done when you have at least 4 terms and they do not look to have anything in common. The procedure for that is:
Factor by grouping, in layman language, is simply defined as the grouping of terms with common factors before factoring a polynomial. A polynomial is a mathematical expression that is formed by variables and constants. The construction of such variables and constants is done by using operations of addition, subtraction, multiplication and non-negative whole number exponents (constants). Before we get down to factor by grouping methods
In mathematics, factoring is one of the important topic in algebra. Given expression can be factored by using the method of factoring by grouping. The given polynomial expression can be factored by different methods that are factoring by grouping, using trinomials by ac method, and group the polynomials more than two groups. Let us solve some example problems in factoring by grouping.
I hope the above explanation was useful.Keep reading and leave your comments.