Aiden has a collection of 63 nickels and quarters in his piggy bank. if the total value of the coins is $10.75, how many nickels does he have? answer the question and show wok!

Aiden has 25 nickels and 38 quarters

Step-by-step explanation:

Let x be the number of nickels and y be the number of quarters in Aiden's piggy bank.

Aiden has a collection of 63 nickels and quarters, so

x nickels are worth cents, y quarters are worth cents. If the total value of the coins is $10.75, then

From the first equation:

Substitute it into the second equation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)