If you make a list of the driving speed, 60,50,50,40,40,30,30,20,20,10 you notice a patern, To avoid any heavy adding and multpling knowing it
+10,20,20,30,30, equals 5 70's is helpful. To find the average
70,70,70,70,70 you need to add all 10 numbers up and then divide it by 10. We already know tha t divided by 5 it equals 70 so 70 divided by 2 is 35. So 35 is our answer
The sum of all angles in a pentagon is 540, so wecan use that to find out the missing angle. 98+98+125+108=429, 540-429=111.
Now we have 2x+11=111
Subract 11 from both sides 2x=100
Divde both sides by 2 x=50
Now for y, since the line is straight the single side will measure 180 degrees. Subtract 111 from 180 and you get 69.
Now we have y+8=69
subtract 8 from btoh sides and you get y=61
So now we have X = 50 and Y = 61
If you have any questions feel free to ask