False
true
True
You can represent values using variables. This can only be done with whole numbers.
A Formula
754-299 using the trade first method = 455
true
True
When data is POSTed to a PHP script, you may access them from the $_POST super global variable.
No, the variables do not form part of the URL visible in the address bar. They only display in GET methods or manually appended.To access POST variables in scripts, you need to use $_POST['variable_name'];
true
graphical method is applicable only for solving an LPP having two variables in its constraints , but if more than two variables are used, then it is not possible to use graphical method. In those cases, simplex method helps to solve such problem. In simple, in graphical method is used when the constraints contain two variables only. But simplex method can be used to solve constraints having more than two variables.
You can solve the system of equations with three variables using the substitute method, or using matrix operations.
False
False
False
It is totally wrong and unacceptable.
There is no set answer to this - there are too many variables... How many units are you using over a year ? What steps are you taking to reduce your consumption ? Which supplier are you using ? What payment method are you using ?.... etc...