12X-6=180
12X=186
X=186/12=15.5
Answer: There are 41 dimes and 11 pennies in the cup.
Step-by-step explanation:
We know that 1 dime = 0.1 dollars
1 penny = 0.01 dollars
Let p be the number of pennies and d be the number of dimes.
Then we have the following equations :_
Substitute the value of d from (1) in equation (2), we get
Then , Put value of p in (1), we get
Hence, there are 41 dimes and 11 pennies in the cup.
I believe its the last one but don"t mark my words.
Check the picture below, so the square looks more or less like so, since it has all equal sides, then we can simply get the distance of TE and multiply it times 4 and that's the perimeter.