math

posted by .

(In this question the answer is -4, please explain how did they get it)

If A and B have coordinates -15 and 11, what is the coordinate of X if X is 4 units farther from B as from A?

• math -

Always make a sketch
Place X between A and B , a bit closer to A

XB - XA = 4
11-x - (x-(-15)) = 4
11-x - x - 15 = 4
-2x = 8
x = -4

check by counting the result on the number line

Similar Questions

1. math,algebra II

can someone show me examples of what is a practical application of matrices or matrix operations that can be used in a real-world situation. Simple example: Coordinate transformation. An object is located at coordinates (x,y,z) in …
2. pre calculus

Question 1: Explain why the equation of the line y=5 has a slope that is undefined. Explain in words or mathematically. Question 2: Given any circle, the coordinates of one endpoint of a diameter is (3,-2). If the coordinates of the …
3. Science Grade 8

The question is: "A flashlight does not lose power as you walk away from it, but as you get farther and farther away, it appears to be less and less bright. Explain" First of all I am BAD at explaining things, and when you don't know …
4. Math

do the following moves in a coordinate system: start at the origin facing in the positive y direction and move 1 unit. For each subsequent move, it is to turn 90 degrees clockwise and go forward 1 unit farther than it went in the previous …
5. Geometry

1) find the coordinate of the image of point (1,2) translated left 2 units and reflected over the x -axis 2) Find the coordinate of the image of the point (2, -4) reflected over the x-axis 3) Determine the midpoint of the segment whose …
6. Coordinate Geometry

Please help!!!!! The points A,B,C,D have coordinates (3,3), (8,0), (-1,1), (-6,4) respectively. a) Find the gradients of the lines AB and CD b) Show that ABCD is a parallelogram c) Find the coordinates of the point of intersection …
7. math

A circle of area 25 pi is graphed in the coordinate plane. If its center has coordinates (8,0), which of the following points MUST lie on the circumference of the circle?
8. Math

Graph and identify the coordinates of a rectangle with a length of at least 5 units and a width of at least 2 units. Each vertex of the rectangle must be in a different quadrant. Two of the points must have rational coordinates that …
9. Pre-calc

HI, can someone can please help me find the coordinates of the two halfway points of the principal cycles. Here are some answers that might help. -I found the interval: (0,pi/2) -The equation of the left vertical asymptote: x=0, and …
10. Reposting question- Pre-calc

HI, Function: y=5cot(-2x) can someone can please help me find the coordinates of the two halfway points of the principal cycles. Here are some answers that might help. -I found the interval: (0,pi/2) -The equation of the left vertical …

More Similar Questions

Post a New Question