With math hw?
answer the 2nd one

Convert the statements into equations. We can use 'q' for quarters and 'n' for nickels.

"Jenny has $5.05 in quarters and nickels"


"Jenny only has 25 coins"


Solve for one of the variables in the 2nd equation, then plug that into the first equation:



Subtract 'n' to both sides:



Now input '25-n' for 'q' in the first equation:





Distribute 0.25 into the parenthesis(we do this by multiplying it to every term inside of it):



Combine like terms(-0.25n + 0.05n = -0.20n):



Subtract 6.25 to both sides:



Divide -0.20 to both sides:



So she has 6 nickels, now we can plug this into any of the two equations to find 'q':





Subtract 6 to both sides:



So she has 19 quarters and 6 nickels.