Two vertices of a right triangle have coordinates (5, 1) and (2, -1). Which could be the coordinate of the third vertex?

(1, -1)
(2, 1)
(2, 5)
(2, -5)

the answer is a

step-by-step explanation:

because if you put 1 in to the square root of x it equals 300.

answer:     true

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

let's fu(!

step-by-step explanation: