Spring98
  • Spring98
Multiply (2.0 • 10^–4) • (3.1 • 10^–20). Express the answer in scientific notation. A. 6.2 • 10^–80 B. 6.2 • 10^–24 C. 6.2 • 10^24 D. 6.2 • 10^80
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
It should be 6.2*10^-24
Spring98
  • Spring98
how do you know?
Spring98
  • Spring98
@tiara.c how do you know?

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anonymous
  • anonymous
(n x 10^a) • (m x 10^b) = (n · m) x 10^a+b
madhu.mukherjee.946
  • madhu.mukherjee.946
@Spring98 i'm sorry i could not help you
madhu.mukherjee.946
  • madhu.mukherjee.946
@tiara.c thanks for helping spring
Spring98
  • Spring98
it's fine i got help from @tiara.c
anonymous
  • anonymous
and if something like this happens: (5.1 x 10^4) • (2.5 x 10^3) = 12.75 x 10^7, where the first number isn't in correct scientific notation, then you would have to move the decimal and change the exponent as well. like: 1.275 x 10^8
anonymous
  • anonymous
You're welcome:)
Spring98
  • Spring98
Thanks @tiara.c u are very helpfull
anonymous
  • anonymous
I'm glad I could help:)

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