A variable expression is an expression which contains variables(symbol that represents a certain value). For example, 4a-90. 4a-90 would be the expression an a is a variable
what is a varable
An "Indepndent Variable" is something in the expieriment that can be changed. And a "Dependent Variable" is something that doesn't change.
Something you would either keep the same or change during a practical, to ensure the experiment is a fair test.
varable
independend varable (<>)
controle depenent independent
remove the varable speed pulley-replace both belts re-install varable speed pulley--your done.
Something that dose not change in an experiment, that the results are compared too.
A liquid has a variable shape and a definite volume.
The dependent (or responding) variable is the one that is observed and likely changes in response to the independent variable.
Replace each variable in the expression by its value and then find the value of the expression.
mean*