Use more than one property of equality to solve equations
More complicated equations may require using more than one property to solve it.
Dr. Osama M. Khaled
Nov 07, 2023 07:28 AM
Use the division property of equality
Dividing both sides of an equation by the same nonzero number does not change its solution.
Dr. Osama M. Khaled
Nov 04, 2023 09:27 AM
Mass and Weight
Is mass different from weight? Take this quiz and test your knowledge
Dr. Osama M. Khaled
Oct 28, 2023 05:26 AM
Privacy Policy
Dr. Osama M. Khaled
Sep 09, 2023 11:22 AM
Video ... 5 User Story Pitfalls
There are common mistakes which BAs do while writing the stories. This short videos explains the 5 most common ones
Dr. Osama M. Khaled
Aug 30, 2020 06:48 AM
Video ... 10 points that can ensure you capture value of business requirements
Capturing value in the requirements is very important. However, many BAs just ignore it and rather focus on the requirements not the value out of it. In this video, you will learn 10 points which will help you capture value of the requirements ensuring that you will be delivering really what is asked from you in a way that satisfies your stakeholders
Dr. Osama M. Khaled
Aug 30, 2020 06:51 AM
What are the trade-off choices between performance and security?
A trade-off decision that many solution architects struggle to make is what requirements to compromise if security and performance requirements conflict? Something which I saw many times in my long career. One point of view is that good user experience is linked primarily to the performance of the system since it does make sense to provide good functionality but without a responsive system. On the other hand, some architects would see that providing a maximum level of security would give a better user experience. This may be true, but have they considered system performance while adding all security measures?
Dr. Osama M. Khaled
Sep 22, 2020 10:45 PM
Variables and Memory Optimization
When you start coding, you need to be mindful to memory usage and leakage.
Dr. Osama M. Khaled
May 27, 2021 10:40 PM
Make a phone number callable in Android
You may want to present a number and make it callable.
Dr. Osama M. Khaled
May 23, 2021 11:36 AM
Check if a string is Null or Empty
It is sometimes not practical to work out a string object immediately before validating if it is null or not
Dr. Osama M. Khaled
May 17, 2021 09:58 PM
Check if a string has a white space at any position
It is important sometimes to check a string and make sure that it does contain a white space (e.g. space, new line, tab, etc ...).
Dr. Osama M. Khaled
May 21, 2021 12:00 PM
An efficient way to delete an item from a dynamic list
It is sometimes tricky working with linked lists if you are searching for an item to delete it.
Dr. Osama M. Khaled
May 23, 2021 09:10 PM
About
Dr. Osama M. Khaled
Aug 14, 2022 03:19 AM
Postal Rates
Data are often presented in tables, with information organized in rows and columns. This exercise will give you the basic concepts of reading a table to find a piece of information.
Dr. Osama M. Khaled
Oct 02, 2023 07:35 AM
Use the multiplication property of equality
Multiplying both sides of an equation by the same nonzero number does not change its solution.
Dr. Osama M. Khaled
Sep 29, 2023 07:32 PM
Multiply fractions
To multiply two fractions, multiply the numerators and multiply the denominators. Simplify the result, if possible
Dr. Osama M. Khaled
Sep 21, 2023 02:26 AM
Use the subtraction property of equality
Subtracting the same number from both sides of an equation does not change its solution
Dr. Osama M. Khaled
Sep 20, 2023 08:53 PM
Exercise 2: Concepts
Practice the essential concepts to simplify algebraic expressions
Dr. Osama M. Khaled
Sep 20, 2023 11:45 AM
Identify corresponding angles, interior angles, and alternate interior angles
A line that intersects two coplanar lines in two distinct (different) points is called a transversal
Dr. Osama M. Khaled
Sep 18, 2023 11:22 AM
Identify and define parallel and perpendicular lines
Parallel lines are not intersecting while perpendicular lines are intersecting and form a right angle
Dr. Osama M. Khaled
Sep 17, 2023 11:24 AM
Equivalent Fractions
Fractions can look different but still represent the same part of a whole.
Dr. Osama M. Khaled
Sep 15, 2023 11:28 PM
Round whole numbers
When we don’t need exact results, we often round numbers
Dr. Osama M. Khaled
Sep 14, 2023 06:01 AM
Use the addition property of equality
Adding the same number to both sides of an equation does not change its solution.
Dr. Osama M. Khaled
Sep 13, 2023 04:08 AM
Exercise 1: Vocabulary
Practice some essential vocabulary when you simplify algebraic expressions
Dr. Osama M. Khaled
Sep 12, 2023 11:46 PM
Determine whether a number is a solution
An equation is a statement indicating that two expressions are equal
Dr. Osama M. Khaled
Sep 12, 2023 07:03 AM
Exercise 6:Translate to algebraic expression
Abstract the words into concrete algebraic expressions
Dr. Osama M. Khaled
Sep 11, 2023 08:13 PM
Exercise 1: Guided Practice
An exercise showing how percents could be used in practical situations
Dr. Osama M. Khaled
Sep 11, 2023 05:50 AM
Write fractions as percents
We use a two-step process to write a fraction as a percent. First we write the fraction as a decimal. Then we write that decimal as a percent.
Dr. Osama M. Khaled
Sep 09, 2023 01:00 AM
Write decimals as percents
To write a percent as a decimal, we drop the % symbol and move the decimal point 2 places to the left. To write a decimal as a percent, we do the opposite: we move the decimal point 2 places to the right and insert a % symbol.
Dr. Osama M. Khaled
Sep 08, 2023 02:09 AM
String Processing
String processing algorithms have been important for computer science for a long time in conjunction with computer languages and compiling issues.
Dr. Osama M. Khaled
Sep 07, 2023 11:36 PM
