Answer:
4) x=110º
5) x=90º (so does y)
6) x=109
7) x=15º and y=5º
8) x=7
9) x=95
10) x=33
Step-by-step explanation:
4), 5) and 6) were a little hard to read but they were mostly simple to solve from what I saw. Using the verticle angles theorem and corresponding theorem you can easily find the values.
7) I plugged in the two first equations to solve x which is (3x+60)=(6x+15)
and for y I had to plug in x to find one of the angles' values to plug in with 15y and then created a second equation which should look like this 105+15y=180º (Since they should be supplementary angles)
8) This one's similar to 7) and even a little simpler. The equation should look like this 4x=3x+7
9) The equation to solve it that I used is x + (x-10)=180º
10) The equation to solve it that I used is (4x+5)=137
Hope this was helpful and (to other people too) if I made any mistakes or didn't explain properly feel free to let me know! :)
