One way you could solve this is to just multiply the top and bottom out so that you get 9/81, reducing it by 9/9 to get 1/9 or option C.
Another way would be to do

since dividing numbers with exponents would be subtracting the bottom exponent from the top exponent, provided that the base number (in this case 3) is the same for both. For this method, you would get

, which is equal to 1/9 or .1 repeating, the same answer that you'd get with the first method.
This is a formula if you need one. DON'T forget to cross-multiply
3/4 = x/12
Answer:
x = 55
Step-by-step explanation:
opposite angles are supplementary
125+x = 180
Subtract 125 from each side
125+x-125 = 180-125
x = 55
Answer:
a= 35°
b= 45°
c= 60°
Step-by-step explanation: