Question

please help will fan!! simplify the expression. then write it in scientific notation. (5*10^2)^-2

a.0.04*10^-4

b.-10*10^-4

c.4.0*10^-6

d.4.0*10^-5

i think its d. but im not sure....

Answer 1

U r right...it is basically (1/500)^2 for which the value comes out to be 4
0.4*10^-4 or 4*10^5

Answer 2

None are right I guess

Answer 3

5*10^2= 500
500^-2= 0.000004
I don't think any option gives that answer

Answer 4

Sorry...it comes out to be 4*10^-6

Answer 5

ok thank you

Answer 6

Silly error on my side

Answer 7

its no prob :)