math

posted by .

y=x^2-3x+c and y=k-x-x^2 meet at
(-2,12)
what are the values of c and k??

omg ive tried 100 ways but cant find the correct ans...please help??

Thank You

  • math -

    "Way" number 101 is easier:

    From the first equation and the fact that (-2,12) is a solution,
    12 = 4 + 6 +c
    So c = 2

    Similarly, from the second equation, with (-2,12) being a solution of that also,
    12 = k +2 -4
    k = 14

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics E&M

    A 68.0 g hollow copper cylinder is 90.0 cm long and has an inner diameter of 1.0 cm. The current density along the length of the cylinder is 1.60×10^5(A/m^2). What is the current in the cylinder?
  2. Function Notation

    Ive been shown that a function can be written like so f:X->Y,f(x)=rule where X is the Domain and Y, the co-domain. Firstly, what is the co-domain?
  3. BIO 100

    Provide at least two ways the use of this biotechnology could benefit socity and two ways this biotechnology could be harmful. My topic is agricultural and environmental uses. I have tried to look for answer but can't find the answers …
  4. Math - Equations of plane(check)

    Consider the plane that contains points A(2,3,1), B(-11,1,2), C(-7,-3,-6). a) Find two vectors that are parallel to the plane. Ans: AC, BC or AB will be parallel to the plane. b) Find two vectors that are perpendicular to the plane. …
  5. Math - Equations of plane(check)

    Consider the plane that contains points A(2,3,1), B(-11,1,2), C(-7,-3,-6). a) Find two vectors that are parallel to the plane. Ans: AC, BC or AB will be parallel to the plane. b) Find two vectors that are perpendicular to the plane. …
  6. math

    the curve y=x^2 - 3x - 4 cross the x-axis at P and Q. the tangent to the curve at P and Q meet at R. the normals to the curve at P and Q meet at S Find the distance RS?
  7. 6th grade math

    Can you check these problems, please? Translate each phrase into algebraic expression. 1. 5 more than D Ans: 5 + D 2. Twice a number W Ans: 2*W 3. Product of 60 and W Ans: 60*W 4. A number, N, decreased by 18 Ans: N - 18 5. 14 minus
  8. 6th grade math

    Can you check the following problems related to inequalities?
  9. 7th grade math (probability)

    Can you check these, please? Ten cards numbered 1 through 10 are mixed together and then one card is drawn. Find the probability of each event. Write each answer as a fraction, percent, and decimal. 14. P(less than 5) = 4/10 = 2/5
  10. math answers??? correct me :/

    1. Rename 7/20 as a percent. A. 35% ⇐ ANS B. 14% C. 30% D. 28% 2. Rename 0.245 as a percent. A. 245% B. 24.5% ⇐ ANS C. 2.45% D. 25% 3. Rename 28% as a decimal ad fraction in its simplest form. A. 0.28 and 28/100 ⇐ …

More Similar Questions