Wednesday, August 18, 2010

algebra homework

In this section let me help you on help with algebra homework

Online help with algebra homework problems 1:

Solving the given algebra sample equation and find out ‘a’ and ‘b’ value of theequation.

9a + 15b – 39 = 0

-9a + 20b – 31 = 0

Solution:

To find out the ‘a’ and ‘b’ the given algebra 1 value linear equation.

9a + 15b = 39

-9a + 20b = 31

Step 1: we are going to add equation (1) and (2). We get

9a + 15b = 39

-9a + 20b = 31

0a + 35b = 70

b = 2. This could also help us on factors of 36

Step 2: Now, we get the ‘b’ value as 2. In the equation (2) we substitute b = 2, we get

-9a + 20(2) = 31

-9a + 40 = 31

-9a = -9

a = 1

Now, we get the ‘a’ value as 1. So, the given system of linear equation values are a = 1, b = 2

Tuesday, August 17, 2010

online tutoring services


Introduction to home tutoring services:
In this article let me help you on online tutoring services. Let me take an example of a company named tutorvista. Tutorvista is one of the world class online home tutoring services provider, tutorvista helps student at any time around the clock regardless of place where they are located.
This could also help us on solving math problems. Student can learn from their home with flexible time. Here tutor explains each concept step by step so that the students can grasp much easier. Tuorvista provides online based tutoring services in subjects like English, math, and science. In this article we shall discuss home tutoring services in math problems.

Saturday, August 14, 2010

precalculus problems free

Introduction of precalculus problems:

In this section let me help you on precalculus problems free. Problems on precalculus is branch of the acclaimed Art of Problem Solving curriculum designed to challenge high-Performing middle and high school students.

Precalculus problems cover trigonometry, complex numbers, vectors, and matrices.
Calculus was developed in the latter half of the seventeenth century by two mathematicians, Namely Gottfried Leibniz and Isaac Newton.

Calculus can be divided into two branches:

Differential Calculus and Integral Calculus. Differential calculus is used to find the rate of change of a measures; integral calculus is used to find the measures where the rate of change is known. "Functions" are defined by a formula. This could also help us on online trigonometry answers

Friday, August 13, 2010

Note on algebra word problems solver

Today let me help you understand on algebra word problems solver. In this let me help you on what is algebra.. and how does it plays an important role in mathematics.

In math, word issues refer to exercises that provide the reader with background information or a narrative. Knowing how to solve word issues is a pleasant skill for students to have because issues of this type appear in math textbooks & on standardized tests. Definitely, word issues vary in complexity, but plenty of needless difficulties arise when students read the word issues quickly. This could also help us on math tutors online. Other challenges occur when students skip steps to solve the issue. The nice news is that most word issues follow similar steps. Continue reading to learn more about how to solve word issues.

Wednesday, August 11, 2010

Note on half life equation

Introduction of half-life:

Today let me help you understand on half life equation. The time required for the atoms to disintegrate is considered as infinite. The half-life is considered for the radioactive element. Half-life of a radioactive element is the time required to reduce its size to the half of its initial amount of the radioactive sample. This half-life of radioactive is used for comparing the different radioactive elements and their activities.

Equation of Half-life:

Equation of half-life:

One of the characteristics of the radioactive element is half-life. It is the time taken to reduce its value half of the radioactive element. The equation of half-life is T/2. The range of half-life is from micro changes to billions of years. It is depends on the radioactive element.This could also help us on grams to liters.

Representation of equation of half-life:

Consider a radioactive element has N nuclei at initial. After first half-life time the radioactive element has N/2 nucleus and after next half-life time again it is reduced into N/4 and so on.

Monday, August 9, 2010

Help on Meters to Inches

Today let me help you go thorough on meters to inches. Since we had studied more on what is all about meters to inches.. now let me help you go through more deeper with the following help of examples.

Meters to Inches – Examples:

Convert 5 Meters to inches?

Solution:
Step 1:
Formula for converting meters to inches:
1 meter = 39.3700787 inches
Step 2:
So to find 5 meter
Step 3:
Multiply 5 with 39.3700787 = 196.8503935. This could also help us on what is ph
Step 4:
Therefore, 5 meter = 196.8503935 inches


Conditional Probability

Conditional Probability
The conditional probability of an event B will be the probability that the event will occur given the knowledge that an event A has already occurred. This probability is written P(B|A), notation for the probability of B given A. In the case where events A and B are independent to the conditional probability of event B given event A is simply the probability of event B, that is P(B)..
Let us consider the events A and B are not independent, then the probability of the intersection of A and B (the probability that both events occur) is defined by
P(A and B) = P(A)P(B|A).
From this definition, the conditional probability P(B|A) is easily obtained by dividing by P(A):
P(B|A)= P(A and B)/ P(A)
This expression is only valid when P(A) is greater than 0. This could also help us on digestive system diagram