Answer:

Step-by-step explanation:
Apply the exponent rule
to a


Apply the exponent rule to b

Apply the exponent rule 

Answer:
sum of exterior angles of polygon = 360°
therefore,
z = 360 - (105+145)
z = 360 - 250
z = 110°
15 divide 825 by 55 and your answer is 15 i thank
Step-by-step explanation:
(xy)(xy)(xy)(xy)(xy)(xy)(xy)
(-ab)(-ab)(-ab)(-ab)(-ab)(-ab)