Question

639 = x 10 2 639 =у 10 8 639 =z 10 16 11100111 =x 2 10 321 =y 8 10 7D =z 16 10

Answer 1

Ответ:

Объяснение:

x=890 y=831

Answer 2

To convert the given numbers to different number systems, let's solve each conversion step by step:

1. 639 = x (in base 10) This number is already in base 10, so x = 639.

2. 639 = у (in base 8) To convert from base 10 to base 8, divide the number by 8 repeatedly and note down the remainders. Start by dividing 639 by 8: 639 ÷ 8 = 79 remainder 7 79 ÷ 8 = 9 remainder 7 9 ÷ 8 = 1 remainder 1 1 ÷ 8 = 0 remainder 1

Write down the remainders in reverse order: 177. So, у = 177 in base 8.

3. 639 = z (in base 16) To convert from base 10 to base 16, divide the number by 16 repeatedly and note down the remainders. Start by dividing 639 by 16: 639 ÷ 16 = 39 remainder 15 (F in base 16) 39 ÷ 16 = 2 remainder 7 (7 in base 16) 2 ÷ 16 = 0 remainder 2

Write down the remainders in reverse order: 27F. So, z = 27F in base 16.

4. 11100111 = x (in base 2) This number is already in base 2, so x = 11100111.

5. 321 = y (in base 10) This number is already in base 10, so y = 321.

6. 7D = z (in base 16) To convert from base 16 to base 10, multiply each digit by the corresponding power of 16 and sum them up. In this case, D represents the digit 13 in base 10.

7D in base 16 = (7 * 16^1) + (13 * 16^0) = 112 + 13 = 125 So, z = 125 in base 10.

Summary of conversions: 639 = x (base 10) 639 = у (base 8) 639 = z (base 16) 11100111 = x (base 2) 321 = y (base 10) 7D = z (base 16)