Wednesday

April 23, 2014

April 23, 2014

Posted by **jacob** on Sunday, December 7, 2008 at 8:22am.

the coordinates of two points are A(-2,6) and B(9,3). find the coordinates of the point C on the X-axis so that AC=BC

- MATH -
**drwls**, Sunday, December 7, 2008 at 8:49amIf it is on the X axis, y = 0. All you have to do is solve for x.

The distance of a point on the x axis from A is

D1 = sqrt [(x+2)^2 + 6^2}

and the distance from B is

D2 = sqrt [(x-9)^2 + 3^2]

Set D1 = D2, (or D1^2 = D2^2) and solve for x.

x^2 + 4x + 4 + 36 = x^2 -18x + 81 + 9

22 x = 90 - 40 = 50

x = 50/22 = 2.273

**Related Questions**

Really need help in Calculus Problem?! - Use Euler's method with step size .2 to...

Algebra 1 - f(x)=x^2+3 Solve for f(2)and f(-5) I need help, can someone please ...

Algebra 1 - f(x)=x^2+3 Solve for f(2)and f(-5) I need help, can someone please ...

Trigonometry - I need help proving the following identity: 4(sin^6(x)+cos^6(x...

algebra 1 - How do you simplify this problem? I really need help.I need it step ...

math - I need help with this problem. If someone can do it step by step that ...

Algebra help - f(x)=x^3-4x^2-x+4 How do I find the x-intercept for this? This is...

Chemistry - If 8.5g of pure ammonium phosphate , (NH4)3PO4(s), is dissolved in ...

Chemistry - If 8.5g of pure ammonium phosphate , (NH4)3PO4(s), is dissolved in ...

algebra - would you help me write a logic application for andy has the cards1,5...