Answer:
x=9
adjacent angles
Step-by-step explanation:
we can set up an equation because if we add these angles, we will get our 90 degree angle,
[tex](4x+6)+(5x+3)=90[/tex] lets solve for x, first add like terms,
9x+9=90, subtract 9 from both sides, 9x+9-9=90-9, 9x=81
divide both sides by 9 and we get 9, so x=9
These are adjacent angles because adjacent angles are angles that are right next to each other. They can form a bigger angle because they are right next to each other
