Answer:
6 x 108 in scientific notation
Step-by-step explanation:
x + y = 9 equation 1<span> the sum of the digits of a two-digit number is 9
</span>the number formed by interchanging the digits is 27 less than the original number<span>
we are looking at the number xy,
10x+y for x is a tens digit.
10y + x = 10x + y + 27
simplify it,
9y = 9x + 27 divide by 9
</span>x + y = 9 equation 1
y= x + 3 equation 2
by subtitution we put y in equation 1
x + (x+3) = 9
2x = 6
x= 6/2= 3
y = x+3=3+3=6
Integers
An integer is a whole number that is not a fraction
Whereas real numbers include fractions and so do rational numbers.
Rational numbers include terminating decimals and fractions. Meaning, they have an end number.
Pi for instance is an irrational number because it never ends