Just a quick question:
(8^1/2) * (9a^1/2)
Thanks for the help.
2007-02-03 05:59:59 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
when mutliplying numbers with exponents, you add the exponents. i have no clue what the question is or i would help you
2007-02-03 06:08:33 · answer #1 · answered by the bertis 2 · 0⤊ 0⤋
First of all... is that 9 * a^1/2 or (9a)^1/2 ??
You can't simplify those as they are written because bases (the thing being taken to the power) are not equal.. 8 doesn't equal a.
However, 1/2 as an exponent means square root.
So...
8^1/2 = sqrt 8 = 2 * sqrt 2.
and
if it's (9a)^1/2 then that's 3 * sqrt a
You can multiply those together...
2*3 = 6
and
sqrt 2 * sqrt a = sqrt (2a)
so you can simplify it to 6 * sqrt (2a)
2007-02-03 06:06:28 · answer #2 · answered by Mathematica 7 · 0⤊ 0⤋
since the powers are the same (^1/2) you can multiply 8*9a and write
72a^1/2
2007-02-03 06:10:46 · answer #3 · answered by maussy 7 · 0⤊ 0⤋
In a question like this, the exponent wouldn't have to be multiplied with each other. The brackets mean you have to do the stuff inside them first, then multiple those together.
2007-02-03 06:06:43 · answer #4 · answered by shamess 2 · 0⤊ 0⤋
ok so 8 divided by half is = to (4) and then 9 divided by half is ummm....4.5 so a is = to 4.5 so 9 times a is 40.5 so all you have left is (4) times (40.5) and that is 162 so ur answer is 162 im pretty sure im only in 7th grade math so lol but we r doing stuff kinda like this
try this also- http://www.mathematicsmagazine.com/12-2003/Gr10_12_2003.htm
2007-02-03 06:18:06 · answer #5 · answered by jonesash94 2 · 0⤊ 0⤋