In the coordinate system above, line segments BC and AC are parallel to the x and y axes, respectively. If line segment AB has length 30 and is on a line that has slope 4/3, what is the length of BC?(A) 28
(B) 24
(C) 21
(D) 18
(E) 15
Subscribe to:
Post Comments (Atom)
Answer 18
ReplyDeleteanser is 18
ReplyDeleteslope=4/3 means AC/BC=4/3 => (4x)^2 + (3x)^2=30^2
ReplyDeletesolving x= 6 therefore BC= 6*3=18