No matter the number, the tenths place is the first to the right of the decimal point. In numbers with no decimal point, the tenths place is zero.
A point on the number line, at a distance of 2.2 units to the right from the origin.
A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation does not require a decimal point. So provided the number is a decimal fraction, it can be represented as a mixed number. If it is a decimal integer then it is not a mixed number and it makes no sense to try to represent it as one.
231
The binary number 10000000 represents the decimal 128
It represents a number.
The previous number!
Yes.
a rational number which is a fraction
A proper fraction in which the denominator is a power of 10.
It is a non-terminating decimal, which could represent a rational number or an irrational number.
As a decimal, it is 4. This is an integer and there is not a sensible way to represent it as a mixed number.