SOLUTION: 1.Two angles are supp;ementary, and one is 40 degree more than three times the other. find the smaller angle. 2. Anne and Nancy use a mental alloy that is 18% cooper to make jew

Algebra ->  Angles -> SOLUTION: 1.Two angles are supp;ementary, and one is 40 degree more than three times the other. find the smaller angle. 2. Anne and Nancy use a mental alloy that is 18% cooper to make jew      Log On


   

Question 275117: 1.Two angles are supp;ementary, and one is 40 degree more than three times the other. find the smaller angle.
2. Anne and Nancy use a mental alloy that is 18% cooper to make jewerly. How many ounces of a 14% alloy must be mixed with a 20% alloy to form 96 ounces of the desired alloy?
3. Ellen wishes to mix candy worth $1.85 per pound with candy worth $3.33 per pound to form 29 pounds of a mixture worth $2.62 per pound. How many pounds of the more expensive candy should she use?
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
It's best to present only one problem at a time. I'll help you on the first one.
Let x represent the smaller angle. Therefore the equation will be:
x+(3x+40)=180 Combine like terms to get and subtract 40 from both sides to get:
4x=140
x=35 degrees
Can you figure out the larger angle?
RJ
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