For the points (0,0) and (x,-4) find x so that the distance between the points is 5.

Question

anonymous · Answer

$$\sqrt{(x-0)^2+(-4-0)^2}$$

anonymous · Answer

=5

anonymous · Answer

25=x^2+16

25-16=x^2
x^2=9
x=3

bahrom7893 · Answer

y answer ur own question? haha..

anonymous · Answer

just checking it, i realized when i did it and check back it was correct but i already posted it so i said i will finish it

sgadi · Answer

Hi pirplec16 ..
The work done by you is correct but not complete.
The answer is 

$$\pm 3$$

myininaya · Answer

what sgad says is true
x=3
or
x=-3

anonymous · Answer

yeah i was wondering if i should put +/- three thanks myininaya!

anonymous · Answer

$$Let  A(x _{1};y _{1})  and B(x_{2};y_{2})$$ be 2 points.Then,the distance between them is $$\sqrt{(x_{2}-x_{1})^{2}-(y_{2}-y_{1})^{2}}$$