Do you mean what does infinity + infinity equals to? If so, infinity + infinity = infinity.
        
             
        
        
        
Z+5 that's it sorry had to put at least 20 characters so good luck. To clarify, it is z+5
        
             
        
        
        
Answer:
Use the figure at the right for Exercises 1-4
1) Name a pair of vertical angles.
Name a pair of adjacent angles with vertex M.
3) Name a pair of adjacent angles with vertex S.
N
4) Name a linear pair.
Step-by-step explanation:
 
        
             
        
        
        
Part 1)
we know that
the property of cyclic quadrilaterals for which opposite angles are supplementary
then
m∠A°+43°=180°------------> m∠A=180°-43°=137°
the answer is m∠A=137°
Part 2) <span>Quadrilateral ABCD  is inscribed in a circle. What is the measure of angle A?
we know that
</span>the property of cyclic quadrilaterals<span> for which opposite angles are supplementary
then:</span>
<span>m∠A+m∠C=<span>180<span>∘
(2x+9)+(3x+1)=180---------------> 5x+10=180
x=(180-10)/5=34
</span></span></span>m∠A=2x+9-------------> 2*34+9=77°
<span>
the answer is </span>m∠A=77°<span>
</span>