a. 3
b. √21
c. √29
d. 7
explain?
2007-06-15 17:38:15 · 4 answers · asked by jrrkidd 1 in Science & Mathematics ➔ Mathematics
One way to do it would be to plot it out on graph paper and then use Pythagoras's theorem to solve for the unknown side. (make it a triangle)
Unless I'm making a stupid mistake I think that the triangle plotted ends up being:
5^2 + 3^2 = x^2
25+9= x^2
34 = x^2
√(34) = x
So your answer would be roughly 5.83 (or the Square Root of 34)
Not an answer choice so perhaps I'm making a silly mistake but, maybe this helps some.
2007-06-15 17:57:45 · answer #1 · answered by Wayne 2 · 1⤊ 0⤋
You can use the pythagorean theorem for this: a^2 + b^2 = c^2 a = Xa - Xb = 2 - 5 = -3 b = Ya - Yb = 1 - 3 = -2 seeing as you are only looking for the length, you could also reverse the order of the coordinates (B-A instead of A-B) as long as you do it in both operations. then plug into the pythag. thm equation c = sqrt(a^2 + b^2) = sqrt ((-3)^2 + (-2)^2) = sqrt(9+4) = sqrt(13) = 3.606
2016-05-17 05:35:43 · answer #2 · answered by leigh 3 · 0⤊ 0⤋
d² = (3 + 2)² + (-2 + 5)²
d² = 25 + 9
d² = 34
d = √34
Not one of given answers?
2007-06-16 04:47:29 · answer #3 · answered by Como 7 · 0⤊ 0⤋
34^0.5
L^2=(x1-x2)^2+(y1-y2)^2
2007-06-15 17:49:42 · answer #4 · answered by Anonymous · 1⤊ 0⤋