Whether presenting in a boardroom, off an iPad, over the Web or as a print-out, the right delivery is the difference between a great presentation and, at best, a missed opportunity and, at worst, a presentation disaster. All the other elements donât matter if the delivery doesnât work.
Parentheses have a great many specialized meanings in mathematics. A few of these are described below. 1. Parentheses are used in mathematical expressions to denote modifications to normal order of operations (precedence rules).
The words three times tell us the first term is a number multiplied by three. In this expression, we don't need a multiplication sign or parenthesis. Phrases like a number or the number tell us our expression has an unknown quantity, called a variable. In algebra, we use letters to represent variables.