anonymous
  • anonymous
Evaluate and write the solution in scientific notation: 4.2x10^5 ----------- 2.1x10^2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
answers: 2 x 107 2 x 103 2 x 102.5
skullpatrol
  • skullpatrol
Any ideas?
skullpatrol
  • skullpatrol
$$\Huge\text{Guide the asker to a solution}$$

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More answers

anonymous
  • anonymous
could you throw in some steps that I should do?
skullpatrol
  • skullpatrol
$$\Huge \frac{4.2*10^5}{2.1*10^2}$$
skullpatrol
  • skullpatrol
You need to do division...
anonymous
  • anonymous
0.000042 is the answer to bottom one?
anonymous
  • anonymous
i mean top one*
skullpatrol
  • skullpatrol
$$\Huge \frac{ac}{bd} =\frac{a}{b} * \frac{c}{d}$$
skullpatrol
  • skullpatrol
$$\Huge \frac{4.2*10^5}{2.1*10^2} =?$$
anonymous
  • anonymous
420000 ------ 210
anonymous
  • anonymous
?
skullpatrol
  • skullpatrol
OK that works... now what?
skullpatrol
  • skullpatrol
?
anonymous
  • anonymous
the next step? I don't know ;/
skullpatrol
  • skullpatrol
Divide 420,000 by 210.
skullpatrol
  • skullpatrol
|dw:1378467547995:dw|
anonymous
  • anonymous
2,000
skullpatrol
  • skullpatrol
Yes.
skullpatrol
  • skullpatrol
Write the solution in scientific notation.
anonymous
  • anonymous
?? i don't get it?
skullpatrol
  • skullpatrol
Write it as n*10^m
skullpatrol
  • skullpatrol
2,000 = ?
anonymous
  • anonymous
ohhh i see now, 2 x 10^3
anonymous
  • anonymous
thank you so much! :))
skullpatrol
  • skullpatrol
Thank you for trying. You did it YOUR way and got it right :D
skullpatrol
  • skullpatrol
$$\Huge \frac{4.2*10^5}{2.1*10^2}= \frac{4.2}{2.1} * \frac{10^5}{10^2} =2*10^3$$
anonymous
  • anonymous
O.o
skullpatrol
  • skullpatrol
I used the property of quotients that I showed you above.
anonymous
  • anonymous
ohh, okay :)

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