That depends on what you have 30.5 of. If that's 30.5 feet, it rounds to 31 to the closest foot. If it's 30.5 something elses, you should tell us what it is.
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305 is a composite number because it has factors other than 1 and itself. It is not a prime number.The 4 factors of 305 are 1, 5, 61, and 305. The factor pairs of 305 are 1 x 305 and 5 x 61.The proper factors of 305 are 1, 5, and 61 or,if the definition you are using excludes 1, they are 5 and 61.The prime factors of 305 are 5 and 61.The distinct prime factors of 305 are, since there is no repetition of prime factors, also 5 and 61.The prime factorization of 305 is 5 x 61.
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. It may or may not contain a fractional part. If not, the decimal representation does not require a decimal point. So the decimal for 305 is 305!
5 is the greatest common factor of 15 and 305.15 factors to [3 5]305 factors to [5 61]common factors are [5] ■5A:5
295
30.5% as a fraction = 305/1000 or 61/200 30.5% = 30.5%/100% * 10/10 = 305/1000 or 61/200 in fraction