• Change of variable question?

    There is an example which is 3x^8 + 5x^4 − 2 = 0 it says when we use u = x^4 then it becomes:3u^2 + 5u − 2 = 0 I'm confuse, how did u = x^4 make 3x^8 + 5x^4 − 2 = 0 into 3u^2 + 5u − 2 = 0? Se more details here: http://www.mathsisfun.com/algebra/change...
    There is an example which is 3x^8 + 5x^4 − 2 = 0 it says when we use u = x^4 then it becomes:3u^2 + 5u − 2 = 0 I'm confuse, how did u = x^4 make 3x^8 + 5x^4 − 2 = 0 into 3u^2 + 5u − 2 = 0? Se more details here: http://www.mathsisfun.com/algebra/change...
    5 answers · Mathematics · 2 weeks ago
  • Square root radical equation problem.?

    Solve √(5+y^2) +√(5 - y^2) = 4 where y∈ R . Choices. A. y= ± 1 B. y = - 2 only C. y = 2 only D. y = ± 2 my answer from my solution is y = ± 2, but how can I determine its y∈ R?
    Solve √(5+y^2) +√(5 - y^2) = 4 where y∈ R . Choices. A. y= ± 1 B. y = - 2 only C. y = 2 only D. y = ± 2 my answer from my solution is y = ± 2, but how can I determine its y∈ R?
    4 answers · Mathematics · 2 weeks ago
  • Approximation solution problem.?

    Use the Function Grapher at http://www.mathsisfun.com/data/function-... to find an estimate for the positive solution of the equation 3x^6 − 6x^4 − 1 = 0 choices. A. 1.4 B. 1.41 C. 1.44 D. 1.5
    Use the Function Grapher at http://www.mathsisfun.com/data/function-... to find an estimate for the positive solution of the equation 3x^6 − 6x^4 − 1 = 0 choices. A. 1.4 B. 1.41 C. 1.44 D. 1.5
    1 answer · Mathematics · 2 weeks ago
  • Graphing quadratic equation problem?

    The above shows part of the graph of the function f(x) = -x2 − 8x − 7 What is the equation of its axis of symmetry? choices A. y = - 4 B. x= - 4 C. x = - 3 D. y = 9
    The above shows part of the graph of the function f(x) = -x2 − 8x − 7 What is the equation of its axis of symmetry? choices A. y = - 4 B. x= - 4 C. x = - 3 D. y = 9
    8 answers · Mathematics · 3 weeks ago
  • Even and odd function problem?

    The function shown in the graph is: A. Even B. Odd C. Neither Even nor Odd. D. Both even and Odd.
    The function shown in the graph is: A. Even B. Odd C. Neither Even nor Odd. D. Both even and Odd.
    3 answers · Mathematics · 4 weeks ago
  • Increasing and Decreasing Functions problem.?

    The graph of the function f(x) = 1/3x3 + x2 - 8x + 1 is shown above. For what values of x is the function f(x) = 1/3x^3 + x^2 - 8x + 1 strictly decreasing? choices A. On ( - ∞, - 4) and (2, + ∞) B On [- ∞, - 4] and [2, + ∞] C. On (-4,2) D. On [- 4, 2] This problem really confuses me.. Please explain how to solve this problem..
    The graph of the function f(x) = 1/3x3 + x2 - 8x + 1 is shown above. For what values of x is the function f(x) = 1/3x^3 + x^2 - 8x + 1 strictly decreasing? choices A. On ( - ∞, - 4) and (2, + ∞) B On [- ∞, - 4] and [2, + ∞] C. On (-4,2) D. On [- 4, 2] This problem really confuses me.. Please explain how to solve this problem..
    3 answers · Mathematics · 4 weeks ago
  • Mid point of the line segment question?

    What are the coordinates of the point that divides AB in the ratio 1 : 3. choice A. (0,3) B. (-3,5) C. (3,1) D. (-2, 4) My Question is, what does ratio 1:3 mean to this problem, and how can apply it? This problem confuses me..
    What are the coordinates of the point that divides AB in the ratio 1 : 3. choice A. (0,3) B. (-3,5) C. (3,1) D. (-2, 4) My Question is, what does ratio 1:3 mean to this problem, and how can apply it? This problem confuses me..
    9 answers · Mathematics · 1 month ago
  • Slope question?

    How can I determine the sign of the slope/gradient if it is negative or positive? Here is a figure of the graph.. I know the slope of the line is 2/3, I'm wondering what would be its sign?
    How can I determine the sign of the slope/gradient if it is negative or positive? Here is a figure of the graph.. I know the slope of the line is 2/3, I'm wondering what would be its sign?
    7 answers · Mathematics · 1 month ago
  • How long does a priest work for a day?

    Do you think is just a hour during Mass time?
    Do you think is just a hour during Mass time?
    13 answers · Religion & Spirituality · 1 month ago
  • General form of polynomial problem?

    The general form of a polynomial in x is anxn + an-1xn-1 + an-2xn-2 + ... + a2x2 + a1x + a0 Given n = 5, which of the following polynomials satisfies the condition ak = k +1, for k = 0 to k = 5? choices: A. 5x^5 + 4x^4 + 3x^3 + 3x^2 + x + 1 B. 6x^5 + 5x^4 + 4x^3 + 3x^2 + 2x + 1 C. x^5 + x^4 + x^3 + x^2 + x + 1 D. 5x^6 + 4x^5 + 3x^4 + 2x^3 +... show more
    The general form of a polynomial in x is anxn + an-1xn-1 + an-2xn-2 + ... + a2x2 + a1x + a0 Given n = 5, which of the following polynomials satisfies the condition ak = k +1, for k = 0 to k = 5? choices: A. 5x^5 + 4x^4 + 3x^3 + 3x^2 + x + 1 B. 6x^5 + 5x^4 + 4x^3 + 3x^2 + 2x + 1 C. x^5 + x^4 + x^3 + x^2 + x + 1 D. 5x^6 + 4x^5 + 3x^4 + 2x^3 + x^2 - 1 http://www.mathsisfun.com/algebra/polyno...
    1 answer · Mathematics · 2 months ago
  • Help with polynomial multiplicities problem 2.?

    The above shows part of the graph of the function y = -0.2(x + 2)^6 + (x + 2)^4. What is the multiplicity of the root at x = -2? choices A. 2 B. 4 C. 6. D. Zero.
    The above shows part of the graph of the function y = -0.2(x + 2)^6 + (x + 2)^4. What is the multiplicity of the root at x = -2? choices A. 2 B. 4 C. 6. D. Zero.
    1 answer · Mathematics · 2 months ago
  • Help with polynomial multiplicities?

    The above shows part of the graph of the function y = 0.1x^5 - x^3. You can see 3 roots ... what are their multiplicities (from left to right)? A. 1, 1 and 1 B. 2,1 and 2 C. 1, 3 and 1 D. - 3, 0 and 3 Please explain how you get the answer..//
    The above shows part of the graph of the function y = 0.1x^5 - x^3. You can see 3 roots ... what are their multiplicities (from left to right)? A. 1, 1 and 1 B. 2,1 and 2 C. 1, 3 and 1 D. - 3, 0 and 3 Please explain how you get the answer..//
    2 answers · Mathematics · 2 months ago
  • I need help in imaginary numbers!?

    If x is an imaginary number, then which of the following are possible solutions of the equation x^3 = 27i? a. x = ± 3i b. x = - 3i c . x = 3i d . x = ± 3
    If x is an imaginary number, then which of the following are possible solutions of the equation x^3 = 27i? a. x = ± 3i b. x = - 3i c . x = 3i d . x = ± 3
    6 answers · Mathematics · 2 months ago
  • How do we determine the size of a music in MB(Megabytes)..?

    Like if a music whose time length is 04:01, what would be it's size in MB(Megabytes)?
    Like if a music whose time length is 04:01, what would be it's size in MB(Megabytes)?
    3 answers · Mathematics · 2 months ago
  • Question for introverts?

    Do you get upset when you spent most of the time being quiet on a group conversation, on occasion, or at work. And no one is talking to you.
    Do you get upset when you spent most of the time being quiet on a group conversation, on occasion, or at work. And no one is talking to you.
    7 answers · Polls & Surveys · 3 months ago
  • Question for introverts.?

    What do you usually do if you have a hard time thinking what to say to the person you really want to talk to?
    What do you usually do if you have a hard time thinking what to say to the person you really want to talk to?
    9 answers · Polls & Surveys · 3 months ago
  • Question for introverts..?

    Do you hate being quiet type person?
    Do you hate being quiet type person?
    11 answers · Polls & Surveys · 3 months ago
  • Currency problem.?

    Given 1USD = 51.1523 PHP If an Item cost 500 PHP, in the Philippines, how much will you sell this item on USA?
    Given 1USD = 51.1523 PHP If an Item cost 500 PHP, in the Philippines, how much will you sell this item on USA?
    3 answers · Mathematics · 3 months ago