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Convert 169 from decimal to hexadecimal

(base 16) notation:

Power Test

Raise our base of 16 to a power

Start at 0 and increasing by 1 until it is >= 169

16⁰ = 1

16¹ = 16

16² = 256 <--- Stop: This is greater than 169

Since 256 is greater than 169, we use 1 power less as our starting point which equals 1

Build hexadecimal notation

Work backwards from a power of 1

We start with a total sum of 0:

16¹ = 16

The highest coefficient less than 15 we can multiply this by to stay under 169 is 10

Multiplying this coefficient by our original value, we get: 10 * 16 = 160

Add our new value to our running total, we get:
0 + 160 = 160

Hexadecimal (10 - 15) are represented by an (A-F) where 10 translates to the letter A

This is <= 169, so we assign our outside coefficient of A for this digit.

Our new sum becomes 160

Our hexadecimal notation is now equal to A

16⁰ = 1

The highest coefficient less than 15 we can multiply this by to stay under 169 is 9

Multiplying this coefficient by our original value, we get: 9 * 1 = 9

Add our new value to our running total, we get:
160 + 9 = 169

This = 169, so we assign our outside coefficient of 9 for this digit.

Our new sum becomes 169

Our hexadecimal notation is now equal to A9

Final Answer