2x+y=180
x=???
y=???
2007-11-28 13:01:12 · 8 answers · asked by st_gurl13 2 in Science & Mathematics ➔ Mathematics
Well, actually the problem is that there's a line that has three angles that add up to 180 degrees and two of the angles are equal. What is the measure of the last angle? I was thinking 2x+y=180 would solve this problem, but judging the answers I've gotten, I guess this equation is inaccurate.
2007-11-28 13:16:59 · update #1
Hurry, people! This homework is due tomorrow!!!
2007-11-28 13:31:57 · update #2
for y, move 2x to other side and you get
y=180-2x
for x,
2x=180-y
divide by 2
x=90-y/2
hope this helps
2007-11-28 13:06:47 · answer #1 · answered by car 3 · 0⤊ 0⤋
2x+y=180
x = 90 -y/2
y = -2x +180
graph this line
pick 2 points for example:
P1(90, 0) and P2(0, 180)
join these 2 points and extend the line.
The solution to your equation is all points on the line.
2007-11-28 13:10:41 · answer #2 · answered by Any day 6 · 0⤊ 0⤋
2x + y = 180 is a straight line passing through points (90, 0) and (0, 180) cuting intercepts 90 and 180 from the axes and whose slope is -- 2 with y-intercept 180.
2007-11-28 13:11:09 · answer #3 · answered by sv 7 · 0⤊ 0⤋
x = 1/2y + 90
y = -2x + 180
2007-11-28 13:05:09 · answer #4 · answered by Ms. Exxclusive 5 · 0⤊ 0⤋
You need two equations to have a unique solution to this problem. As it is, you have so many solutions.
2007-11-28 13:05:44 · answer #5 · answered by Anonymous · 0⤊ 0⤋
x=90-y/2
y=180-x
I win.
2007-11-28 13:04:17 · answer #6 · answered by someone2841 3 · 0⤊ 0⤋
x=80
y=20
2007-11-28 13:04:12 · answer #7 · answered by Sweet Pea 6 · 0⤊ 1⤋
you can't solve it any more, because you don't have the right information for it.
2007-11-28 13:04:27 · answer #8 · answered by dramatic drummer 2 · 0⤊ 0⤋