To convert the given number into base-ten, determine the place value of each digit and multiply it by its respective place value. Then, add all the values together. The base-ten number for 30,9009 is 30,099.
To convert the given number into base-ten, we need to determine the place value of each digit. The number is 30,9009. The digit 3 is in the ten thousands place (10,000), the digit 0 is in the thousands place (1,000), the digit 9 is in the tens place (10), and the digit 9 is in the ones place (1). We can now multiply each digit by its respective place value:
3 x 10,000 = 30,000
0 x 1,000 = 0
9 x 10 = 90
9 x 1 = 9
Adding all the values together, the base-ten number for 30,9009 is 30,000 + 0 + 90 + 9 = 30,099.