Search results

  1. C

    Uniformity of units in a quadratic function

    Whoosie daisys yea I see that now. Thank you for pointing that out for me.
  2. C

    Uniformity of units in a quadratic function

    There is a sample word problem in a textbook about creating a quadratic function in vertex form to model the word problem. I understand solving the problem, however, what I do not understand about the example is when only the variable "k" is converted from inches to feet, while the variable "a"...
  3. C

    Different arithmetic based on the presentation of an equation

    My education does include 3rd grade and the previous grades. Sorry for the extra information, I'm just used to always showing work.
  4. C

    Id like to delete my account

    Please delete mine as well.
  5. C

    Different arithmetic based on the presentation of an equation

    I have an expression in which I am not sure which way to translate it, in order to solve it, it is the following: \frac{-5}{-5+25} \frac{-5}{20} -\frac{1}{4} The arithmetic above gave me a correct answer in my question, however I looked at the expression again and wondered if there was...
  6. C

    Distribution

    Right. I was more confused with y−6−(2)(2y+5)=−28 in regards to multiplying either 2 vs -2 to the 2y+5...................................(edited - those parentheses are important)
  7. C

    Distribution

    It is, thank you!
  8. C

    Distribution

    \frac{y-6}{4}-\frac{2y+5}{2}=-7 (4)\frac{y-6}{4}-(4)\frac{2y+5}{2}=(4)-7 Where I have an issue: ()I don't know whether to distribute [MATH(2)][/MATH] or (-2) to the (2y+5) (How do I decide what to distribute?) y-6-(2)2y+5=-28 What I want to do it, but I get a wrong answer: y-6-4y+10=-28...
  9. C

    Simplifying a binomial

    Thanks guys! I can now see how "cancelling" out in my example is a problem, and how it would only work in multiplication and division.
  10. C

    Rules for when you can "do one thing to one side of the equation and the other"

    So when you mention domain, you are referring to the equation in the context of a coordinate graph right?
  11. C

    Rules for when you can "do one thing to one side of the equation and the other"

    No, my answer was x=2. Then I plugged it in to the equation and got \sqrt{-7}=\sqrt{-7}
  12. C

    Simplifying a binomial

    I have the following binomial fraction: \frac{6x+12}{6x-5} Why can I not simpliify this equation by canceling out the 6x on the top and bottom, then only be left with \frac{-12}{5}? Whatever the value of 6x is, shouldn't I be able to cancel it out? Why am I not allowed to cancel it out? I...
  13. C

    Rules for when you can "do one thing to one side of the equation and the other"

    Ok, so I guess I mostly just need to check that my answer to a solution gives equality in the equation if I plug it back in, to make sure that it is not an extraneous solution?
  14. C

    Rules for when you can "do one thing to one side of the equation and the other"

    The extent of the square root goes over all constant and variables on both sides of the equation. I don't know how to format the full square root, is there any wiki on how to do it?
  15. C

    Rules for when you can "do one thing to one side of the equation and the other"

    I was solving the following problem, but am unsure if it is ok to solve it the way I am doing it, because I am afraid that I am changing the content of the answer. Here is the problem I was working on: Solve for v, where v is a real number. √8v-11 = √6v+9 What I would do to solve this...
  16. C

    Compute unit circle coordinates (cos,sin) from given degree/radian?

    Got ya, thank you very much! I guess it's just better to work with geometrical reasoning by using square root amounts instead of decimal approximations.
  17. C

    Compute unit circle coordinates (cos,sin) from given degree/radian?

    What methods are you referring to?
  18. C

    Compute unit circle coordinates (cos,sin) from given degree/radian?

    Hi, is there a way to mathematically come up with coordinates in a unit circle from a given radian/degree reference/coterminal angle? For example, if I am given a 30 degree angle I can look up a unit circle diagram and see that it's corresponding unit circle coordinates are (√3/2, 1/2), but is...
Top