Answer is a because a^-2 will be changed to 1/a^2
Hope that helps
Ok so
0.5%=0.005
0.005x=8
x=8/0.005
x=1600
8 is 0.5% of 1600
Hope this helps
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If you continue with the same formula with a different problem then you will get it correct
Thank you!
All interior angles equal to 180 just add the two angles you have and subtract it from 180 to get the final angle
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.