Ask
your own question, for FREE!
Mathematics
20 Online
Your piggy bank has a total of 18 coins in it; some are dimes and some are nickels. If you have a total of $1.40, how many nickels do you have?
Still Need Help?
Join the QuestionCove community and study together with friends!
Let there be \(x\) nickels and \(y\) dimes. So we have 2 equations: \[x+y=18\]\[5x+10y=140\]All you need is to solve this sytem.
Could you tell me what's the worth of nickels and dimes?
\[\huge \color{green}{\textbf{Welcome To Openstudy..}}\]
See, you are given with : x + y = 18 Evaluate y from here by subtracting x from both the sides, y = 18 - x Now: 5x + 10 y = 140 5x + 10(18 - x) = 140 5x - 10x + 180 = 140 5x = 40 x = 8 So, he has 8 nickels..
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
Yosad930:
okay another random question that even google itself isnt helping me with: why cant i zoom in and out anymore with the touchpad? yk how when you pinch your
AddieroniAndCheese:
Tips for studying for an AP exam in like a week? I barely know anything about chem T-T.
thereneelg:
Ok so. I need help. So for one of my songs in choir, The Power of Love. We have to hold one of the "Love"s for a long time.
Aniii:
What is the mean of the following set of numbers: 4, 8, 6, 5, 3? 5.0 5.2 6.0 7.0
gelphielvr:
(algebra 1) input data, revenue f(x) = initial amount(interest)^x question in the
Yosad930:
;-; exam is next tuesday, and i dont get a single thing (well maybe one or two) c
H1m:
What does tariffs mean and what are they exactly? I need an answer from someone that actually knows.
3 hours ago
7 Replies
0 Medals
6 hours ago
3 Replies
1 Medal
5 hours ago
12 Replies
1 Medal
16 hours ago
5 Replies
0 Medals
5 hours ago
10 Replies
1 Medal
6 hours ago
15 Replies
0 Medals
15 hours ago
13 Replies
3 Medals