Sylvania TV Manuals. Retrevo has more than 25 PDF manuals for over 61 Sylvania products. Below are quick links to some popular Sylvania TV models. Did you know that Retrevo also offers buying advice, reviews and deals for hdtvs, including top brands like Samsung, LG, Sharp, Vizio, Toshiba.
Unless and If. Often when we are talking about present situations, we use unless instead of if...not. Unless means except if or simply it means if...not. Both of these examples have the same meaning and refer to the present time. You can't go on vacation unless you save some money.. If you don't save some money, you can't go on vacation.. You will feel cold if you don't wear a coat.. You will feel cold unless you wear a coat.. Unless is good to use when it highlights an exception to what is generally true.
1.7 Negative numbers and the use of brackets. Numbers smaller than zero (shown to the left of zero on the number line in the figure below) are called negative numbers. We indicate they are negative by putting them in brackets as shown in the figure below.