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i the numeral 57,850 how many times greater is the value of the digit 5 in the ten thousands place than the digit 5 in the tens place?

what is the smallest and largest whole number that rounds off to 220?

i'am a four digit numeral between 3000 and 4000.My ones digit is 2 greater than my thousands digit. the two digits are the same. If the sum of my digit is, 20, what number am i in roman numeral?

The normal weight (w) in pounds of a male between 60 and 70 inches tall is related to his height (h) in inches and is represented by w=11/2h-220, if a boy weight 145 pounds, how tall is he?

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