Question

what makes the statement true 9^-2 =
a)81
b)18
c)1/81
d)-1/81

evaluate the expression 8^-2 x 4^0
16
64
-64
1/64

write 5^ x 5^-1 x 5^3 as a single exponent.
5^4
5^-6
5^5
5^2

what is 8.57 x 10^-4 in standard form
85,700
0.00857
8,750,000
0.000875

Answer 1

#1
9^-2 is the same as 1/9^2

Answer 2

for those of you who need to see it,