Math check my answers
posted by Lea .
Please check my answers on the following questions
Simplify:
(X^6)^1/2 = x^3
1000000^1/6 I don't know this one
(64n^12)^1/6 = 1/0.5n^2
(9n^4)^1/2. = 3n^2
36^3/2 = my answer is 2 in the index of the aware root of 36^3
343^4/3 I don't know this one
Thanks

Square root**

1000000 = 10^6, so (10^6)^1/6 = 10
(64n^12)^1/6 = 1/2 n^2
64^1/6 = 1/64^1/6 = 1/2, not 1/.5
.5 is already 2^1
36^3/2 = (36^1/2)^3 = 6^3 = 216
343 = 7^3, so you have
1/7^4 = 1/2401
The others are ok 
K thank u

A rectangle measures 12 cm by 10.5 cm. what is the greatest possible error for each measurement?
a.
0.12 cm, 0.105 cm
c.
0.5 cm, 0.05 cm
b.
6 cm, 5.25 cm
d.
0.05 cm, 0.005 cm