Answer:
I think it is D.
Step-by-step explanation:
I am also not sure, because I also asked this question.
I=k/d^2
4=k/d^2 and 1=k/64 so if we divide the first by the second we get:
4/1=(k/d^2)/(k/64)
4=(k/d^2)*(64/k)
4=64/d^2
d^2=64/4
d^2=16
d=4 meters
11/100, easy. Unless you want something more complicated?
X to the 8/15 power. When you have a power raised to another power, you multiply the exponents.
