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Whats up ?
what is your question . . .
ok i am asking her what her question is
35 all you have to do is try them out and remember they have to add up to 180
because it is a triangle
wait. so if you were to plug in any number to the variable. lets say x=2 will I get the same answer?
to your problem ?
No, because the sum of the angles of a triangle must equal 180
can you walk me through please?
Sure. So you have a triangle, which has 3 angles. All of the angles must add up to 180 degrees. In this problem: Angle 1 = (3x) Angle 2 = (x+10) Angle 3 = (2x-40) Since you must add all of the angles together, you're equation looks like (3x) + (x+10) + (2x-40) = 180 Angle 1 + Angle 2 + Angle 3 = Total number of angles in a triangle Now that we have that, we want to get the x's by theirselves and the numbers by themselfs. In order to get a POSITIVE 10 to the other side, we do the opposite and subtract (3x) + (x) + (2x-40) = 180 -10 Now, it's the opposite, a NEGATIVE 10 Same, with the NEGATIVE 40, to make it a POSITIVE 40 (3x) + (x) + (2x) = 180-10+40 So now we can combine. x is the same as 1x, right?... so 1 + 2 + 3 = 6. 180-10+40 equals 210, so we get 6x = 210 Now to solve for x: We see 6 is MULTIPLIED by X, so we do the opposite and DIVIDE So, that makes it x = 210/6 210/6 = 35 So x = 35
oh now I get it. thanks!!!