Answer:
8.8
Step-by-step explanation:
first set up the equation 2x+10=3x-13
then add 10 to -13 and add 2x to 5x so you get 5x=-3
then divide 5 from both side so you get x=-0.6
now that x=-0.6 you can solve 2x + 10 and that gets you 8.8.
8.8 is the measurement of angle 1 because it is directly opposite to 2x+10
