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Q: Water is an example of a(n) _____. element compound mixture atom
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User: Water is an example of a(n) _____. element compound mixture atom

User: Identify the type of chemical reaction. H2CO3H2O + CO2 decomposition exchange reversible synthesis

Question
Updated 303 days ago|7/27/2016 4:58:50 PM
Flagged by emdjay23 [7/27/2016 4:58:50 PM]
Rating
3
Water is an example of a compound.
Added 303 days ago|7/27/2016 4:58:49 PM
Confirmed by yumdrea [7/28/2016 1:50:15 PM]

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Solve the following system of equations by the substitution method. "5x = y + 6," "2x - 3y = 4"
Question
Updated 9/14/2014 1:09:10 AM
janezshun, please make sure to clearly type your solutions by using proper spacing.
Hi andrew , for these question, Can I simplify or didn't use to add the calculation steps? I think I can't simplify it ,because the question asked to use the substitution method.
The solution for 5x = y + 6, 2x - 3y = 4 is x = 14/13, y = -8/13.
From 5x = y + 6 , we can get y = 5x - 6, which we can put it into the 2th equation.
2x - 3y = 4
2x - 3 (5x - 6) =4
-13x + 18 =4
x = 14/13

put x = 14/13 into the y = 5x - 6 , we can get the value of y
y= 5x - 6
y= 5*14/13 - 78/13
y= 70/13-78/13
y= - 8/13
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The film was made in Spain. Prepositional phrase: in Spain.
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