SOLUTION: Ugh, having a mental lapse and would appreciate any and all help on these... Simplify and write your answer to one significant digit: (0.0086 X 10 (to the negative two power) )

Algebra ->  Equations -> SOLUTION: Ugh, having a mental lapse and would appreciate any and all help on these... Simplify and write your answer to one significant digit: (0.0086 X 10 (to the negative two power) )      Log On


   



Question 601727: Ugh, having a mental lapse and would appreciate any and all help on these...
Simplify and write your answer to one significant digit:
(0.0086 X 10 (to the negative two power) ) (1.2 X 10 (to the eight power) )
___________________________________________________________________________
(2 X 10 (to the eight power) ) (60,000)
&
(40 X 10 (to the negatvie tenth power))(42 X 10 (to the negative fourth power) )
________________________________________________________________________________
(97, 400) (425)

These are also tripping me up:
Add, subtract, multiply, or divide, as indicated, and round each result to the proper number of significant digits:
52.8 X 10 (to the sixth power)
_______________________________
3.0 X 10 (to the tenth power
&
(53.41 X 10 (to the negative first power) + (327. X 10 (to the negative fourth power)
&
Write the result in of the following in rectangular form:
16/185degrees + 10.0/333degrees
&
A block of gold weighs 314 newtons. if the density of gold is 19,300 kilograms per cubic meter, what is the volume of the block?
What i've noticed is that they want the answers in scientific notation format...
Thanks so much!!

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Simplify and write your answer to one significant digit:
(0.0086 X 10 (to the negative two power) ) (1.2 X 10 (to the eight power) )
0.0086E-2
= 8.6E-5
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8.6E-5 * 1.2E10 = 8.6*1.2E5
= 10.32E5
= 1.032E6
To 1 digit = 1E6
or 1.0%2A10%5E6
----------
___________________________________________________________________________
(2 X 10 (to the eight power) ) (60,000)
2E8*6E4 = 12E12
= 1.2E13
--> 1E13
or 1%2A10%5E13
-----------------
Do the others the same way.
&
(40 X 10 (to the negatvie tenth power))(42 X 10 (to the negative fourth power) )
________________________________________________________________________________
(97, 400) (425)
I don't know what that means.