A whole number rounded to the nearest ten thousand is 620,000. What is the least possible value for that number?

615,000

Step-by-step explanation:

Given that:

Whole number rounded to the nearest ten thousand is 620,000

Let x = the whole number

HTh__ TTh Th H T U

6 2 0 0 0 0

The ten thousand digit is 0 ;

To round to the nearest 10 thousand, the thousand digit is rounded up to 1 and added to the ten thousand digit if it up to 5 or above and rounded down to 0 if below 5 with all subsequent digits(hundred, tens and unit) rounded to Zero..

Hence,

The whole number will could be range between :

615,000 - 619,999

Hence, the least possible value for the number is 615,000.

the answer

b. they are parallel and will never intersect.

so, converting firstly the mixed fractions to improper fractions and then "adding".