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How long will it take to travel the 642 miles from Dallas to Birmingham if you average 70 miles per hour Answer in decimal form and round to the nearest tenth?
9.2 hours
Is 642 a prime or composite number?
The number 642 is not a prime number as it can be divided by 2 aswell as itself and one.
What is the roman numberal for the number 642?
In today's notation 642 = DCXLII in Roman numerals
How do you write 642 in roman numerals?
The number 642 in Roman numerals is represented as DCXLII. D represents 500, C represents 100, XL represents 40, and II represents 2. When combined, they form 642.
How can you tell that 642 is divisible by 3?
You can add up the digits, 6+4+2=12 and if that number is divisible by three, so it the original number. So 12 is certainly divisible by 3 so that means 642 is also.
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