Asked by Anonymous
Simplify and write in scientific notation.
(9 X 10^-3)^2
A. 8.1 X 10^-5
B. 81 X 10^-4
C. 81 X 10^-3
D. 8.1 X 10^-6
?
Evaluate 1/2a^-4 b^2 for a = -2 and b = 4.
A. 2
B. 1/2
C. 3
D. 4
B
(9 X 10^-3)^2
A. 8.1 X 10^-5
B. 81 X 10^-4
C. 81 X 10^-3
D. 8.1 X 10^-6
?
Evaluate 1/2a^-4 b^2 for a = -2 and b = 4.
A. 2
B. 1/2
C. 3
D. 4
B
Answers
Answered by
Damon
81 * 10*-6
= 8.1 * 10^-5
I have no idea. use parentheses or write it like this
1
-----------
2 a^-4b^2
or do you mean this?
(1/2) a^-4 b^2
or maybe
1
------------- b^2
2 a^-4
= 8.1 * 10^-5
I have no idea. use parentheses or write it like this
1
-----------
2 a^-4b^2
or do you mean this?
(1/2) a^-4 b^2
or maybe
1
------------- b^2
2 a^-4
Answered by
Anonymous
This one: (1/2) a^-4 b^2
Answered by
Damon
that is
b^2
------------
2 a^4
4^2
--------
2 (-2)^4
16
-------
2(16)
1/2
b^2
------------
2 a^4
4^2
--------
2 (-2)^4
16
-------
2(16)
1/2
Answered by
da
(9x10⁻⁴)(8x10⁷)