I forgot how to do this. do I add the x and the subtact 15 from each side
Did you draw a picture?
Did you see that angles QNS and RNS are a linear pair?
Trick question. You should not see that because we are not told that.|dw:1441039192569:dw| Definition of bisector. What can we say about the measures of the two angles created by the bisection?
Haha good one, and I have no clue.
"BI" What might that mean?
Bimonthly Bicycle Bifurcate Bisect
Right. And what does "bi" mean in this case?
dived into two parts
Two EQUAL parts. The measures of the two angles are equal. Now what? We are given the measures of the two angles.
Yes. (2x+15) and (6x-15)
It says "57" above. Which is correct. Anyway, you are nearly done. 2x+15 = 6x-15 Solve or x. This will not quite complete the assignment.
So I add 6x and 2x and I get 8x. or do I subtract them???
No. You must solve using normal procedures. Don't get jumpy. Subtract 2x from both sides.
how do you know if you subtract or add
You need to create zeros. 2x +15 = 6x - 15 Subtract 2x 2x - 2x +15 = 6x - 2x - 15 0 +15 = 4x - 15 Or just 15 = 4x - 15 Now, add 15. It should create zero, somewhere.
yes I got that
then aren't you left with 4x
You must be more careful. 15 = 4x - 15 Add 15 15 + 15 = 4x - 15 + 15 30 = 4x - 0 30 = 4x Now, divide by 4. Be careful.