Angle y is vertical to 43° ....so it has the same measure
Angles x and z are vertical to each other....so their measures are equal.....and they are supplemental to 43° = 137°
Answer:
a1= 1, a2=2, a3= 3
common difference
d=5-2=3
d=2-(-1)=2+1=3
d= 3
Step-by-step explanation: steps explained in attached file
260 I think...?
Step-by-step explanation:
