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xokatexo
Group Title
1. Vicki has $2.80 in quarters and dimes. The number of dimes is 7 less than the number of quarters. Find the number she has of each kind.
2. A purse containing $3.20 in quarters and dimes has, in all, 20 coins. Find the number of each kind of coin.
 one year ago
 one year ago
xokatexo Group Title
1. Vicki has $2.80 in quarters and dimes. The number of dimes is 7 less than the number of quarters. Find the number she has of each kind. 2. A purse containing $3.20 in quarters and dimes has, in all, 20 coins. Find the number of each kind of coin.
 one year ago
 one year ago

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xokatexo Group TitleBest ResponseYou've already chosen the best response.0
can you show the substitution work?
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
dw:1348685007820:dw try to solve for Q from here :)
 one year ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
thats not right....
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
hmm lets see
 one year ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
Q(Q7)=2.80 2Q7Q=2.80 5Q=2.80   5 5 Q=.56
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
woops don't get confused by my brackets :C Q+(Q7) = Q+Q7
 one year ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
wait what?
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
oh woops i messed up from the start T.T oh goodness. im sorry bout that.. need to fix that..
 one year ago

kropot72 Group TitleBest ResponseYou've already chosen the best response.1
The two equations are as follows: 25Q + 10d = 280 d = Q  7
 one year ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
yah what kropot said, sorry bout that :C
 one year ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
k got it THANKS @kropot72
 one year ago

kropot72 Group TitleBest ResponseYou've already chosen the best response.1
You're welcome :)
 one year ago
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