That's the second driest on the books, behind May 1964 when only 0.09 inches fell in the Lehigh Valley. For the year so far, the Valley had only 11 inches of rain â down from the normal 16 inches. It doesn't help that temperatures are creeping up. The average temperature this month is 65.4 degrees â 6 degrees above normal. It's been a very warm and dry month, Meola said.
Rational numbers sound like they should be very sensible numbers. In fact, they are. Rational numbers are simply numbers that can be written as fractions or ratios (this tells you where the term rational comes from). The hierarchy of real numbers looks something like this:
Irrational numbers are numbers that can be written as decimals but not as fractions. An irrational number is any real number that is not rational. By real number we mean, loosely, a number that we can conceive of in this world, one with no square roots of negative numbers (such a number is called complex. ).