(4^9)^5 is equal to 4^45. You multiply 9 and 5 to get 45.
Please show the rest of the question if there is any
Answer:
100°
Step-by-step explanation:
Total angle in a triangle is 180
∠C = 180 - 20 - 60
= 180 - 80
= 100
43% decrease and its spelled percent