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Math Help - Please Check My Work on Quadratic Equations & Help with Word Problem

  1. #1
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    Please Check My Work on Quadratic Equations & Help with Word Problem

    I'm back again and still not understanding quadratic equations. My assignment has 4 questions and I answered the first 3 but I am stuck on number 4, which is a multi-question (a, b, c, & d) word problem. I would like someone to check my work on numbers 1 - 3, 4a, 4b, and help me to understand 4c and 4d of the word problem.













    Thank you in advance for your help
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  2. #2
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    1,2 and 3 look correct to me. However in 4a you have a mistake
    it's supposed to be x^2+y^2 = 58^2

    4b it is y = x+4

    and 4 c it is x^2+(x+4)^2=58^2

    You haven't done part d?
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  3. #3
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    Thank you for the clarification on 1, 2, 3 and 4a, 4b, and 4c. I didn't do part D because I wasn't sure how to do it, in my original posting, I said that needed someone to show me how to do it. I don't want just the answer because I need to know how to do it. I was never very good at word problem :-(
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  4. #4
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    It's not so bad. First expand 4c and then solve either like 1 or like 3. Once you find the values for x, substitute them in the equation y = x+4 and see what numbers you get. You will have to choose one solution. In this case, both x and y need to be positive!
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  5. #5
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    Thank you for your time and the information. I think I have a better understanding now, though I still thing Algebra in general is just confusing :-) Thank you again and you have a great weekend.
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  6. #6
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    Hey, whenever something is confusing, ask lots and lots of questions no matter how silly they are. I found that sometimes the silly questions lead to the biggest understanding!
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  7. #7
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    Hello Vlasev,

    Thank you very much. I do feel silly sometimes considering I am 40 years old and don't know all of this new stuff but with people like you, I am beginning to understand :-)
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  8. #8
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    I thanked the OP for his/her question because s/he made a big effort to show all the working and said specifically where the trouble was. Well done. A refreshing change.
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  9. #9
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    You are most certainly welcome, Mr. Fantastic

    Diana
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