posted by .

On a number line, the coordinate of A is -18 and that of B is 18. C is a point on AB such that AC:CB = 4:5. What is the coordinate of C?

with solution pls... tnx...

  • math -

    Did you make a sketch showing C somewhere between A and B ?
    Mark the position of C with x
    then AC =x-(-18) = x+18
    and CB = 18-x

    then (x+18)/(18-x) = 4/5
    5x + 90 = 72 - 4x
    9x = -18
    x = -2

    so C is at -2

    check by counting.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    If the coordinate of A on the real number line is -2, find the coordinate of B if AB= 5 units
  2. math

    A,B are two points on a given line L.L is the midpoint of the section AB. find the coordinate of point B if the coordinate of A=7 and the coordinate of L=4
  3. math

    A,B,C are points on the line L, the coordinate of B=-2, c is a point that divides AB in the ration 2:3.if the coordinate of C=4, find the coordinate of A
  4. Math

    Point T is the midpoint of line JH. The coordinate of T is (0, 5) and the coordinate of J is (0, 2). The coordinate of H is: (0, 8) (0, 3) (0, 7) (0, 11)
  5. geometry

    On a number line, point A has coordinate 5, and point D is on the line such that AD = 8. What are two possible coordinates of point D?
  6. Math

    A line intersects the graph of y=x^2 twice. One point has an x-coordinate of -4, and the other point has an x- coordinate of 2. A. Find the equation of the line. B. Find the measure of the angle that the line makes with the x-axis.
  7. Geometry

    In the standard (x,y) coordinate plane, if the x-coordinate of each point on a line is 4 less than twice its y-coordinate, what is the slope of the line?
  8. Calculus-Applied Optimization Problem:

    Find the point on the line 6x + 3y-3 =0 which is closest to the point (3,1). Note: Your answer should be a point in the xy-plane, and as such will be of the form (x-coordinate,y-coordinate)
  9. Math

    1. How can you represent a loss of 24 dollars as an integer?
  10. Math

    1. How can you represent a loss of 24 dollars as an integer?

More Similar Questions