Answer:
You have found 24 nickels.
Step-by-step explanation:
Let N be the number of nickles, D be the number of dimes and Q be the number of quarters. The number of coins and their face values are given by the following expressions, respectively:

As of now we have three variables and two expressions, the final expression needed to solve the linear system is given by the amount offered by the coin dealer:

Solving the linear system:

You have found 24 nickels.
Answer:
178 correct problems
Step-by-step explanation:
turn the percentage into a decimal (0.89) and multiply it by the number of questions
Answer:
rationalize my skill capability
Step-by-step explanation:
0.31 = 31%
% is out of 100 so 31% is 31 out of 100 which is 31/100 :)