Hexadecimal<span> numerals are widely </span>used<span> by computer system designers and programmers. As each </span>hexadecimal<span> digit represents four binary digits (bits), it allows a more human-friendly representation of binary-coded values. One</span>hexadecimal<span> digit represents a nibble (4 bits), which is half of an octet or byte (8 bits).
" </span>The main reason why we use hexadecimal numbers is because it is much easier to express binary number representations in hex than it is in any other base number system." - http://digiassn.blogspot.com/2006/02/why-do-we-use-hexadecimal.html
I believe the answer is 18.
What do you need help with ??
Answer:
There are 2 nickels and 6 dimes.
Step-by-step explanation:
Nickels: x
Dimes: y
Constraints:
0.05x + 0.10y = 0.70
x + y = 8 ===> -0.05 * (x + y = 8) ===> -0.05x - 0.05y = -0.4
Add the two equations to eliminate x variable:
0.05x + 0.10y = 0.70
-0.05x - 0.05y = -0.4
_________________
0.05y = 0.3 ===> y = 6
Substitution to find x:
x + y = 8
x + 6 = 8
x = 2
There are 2 nickels and 6 dimes.
