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Gabbi

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Solve using substitution.If the system has infinitely many solutions, express your answer in terms of k. If the system is
1. 1 answer
2. 502 views
A box contains $7.80 in nickels, dimes, and quarters. There are 46 coins in all, and the sum of the numbers of nickels and dimes
1. 4 answers
2. 1,509 views
Three bottles of water and 2 bagels cost $8.23. At the same prices, 2 bottles of water and 5 bagels cost $8.64. Find the price
1. 2 answers
2. 533 views
A gift store is making a mixture of almonds, pecans, and peanuts, which sells for $4.50 per pound, $3 per pound, and $4 per
1. 4 answers
2. 1,160 views
The income from a student production was $23,000. The price of a student ticket was $3, and nonstudent tickets were sold at $7
1. 8 answers
2. 1,140 views
Sam invested $1900, part of it at 6% and the rest at 8% yearly interest. The yearly income on the 8% investment was $32 more
1. 4 answers
2. 3,519 views

x+y+z=46 x+y=z-2 .05x+.10y+.25z=7.80 x+y=z-2 z=x+y+2 x+y+x+y+2=46 2x+2y=44 Does this look right so far..?
Typo... .5x + .10y + .25y = 7.80 is actually .5x + .10y + .25z = 7.80
Thank you very much!
So my two equations are... x + y = 1900 .08y = 32 + .06x(2) Yes?
So my two equations are.. x + y = 5000 3x +7y = 2300 Yes?
5,000 tickets were sold.
To eliminate variables could I multiply the first equation by -4.50 and then add that equation to the third equation to eliminate x? Thank you.
so.. 3x + 7y = 50..?

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