mprodutions075
mprodutions075 mprodutions075
  • 17-06-2021
  • Mathematics
contestada

SOLVE ASAP! PLS HELP ME!!!

SOLVE ASAP PLS HELP ME class=

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sqdancefan
sqdancefan sqdancefan
  • 21-06-2021

9514 1404 393

Answer:

  A.  2.1

Step-by-step explanation:

Put the numbers in the equation and do the arithmetic.

  1/R = 1/(3 1/2) +1/(5 1/4)

  1/R = 1/(7/2) +1/(21/4) = 2/7 +4/21 = (6 +4)/21

  R = 1/(10/21) = 21/10

  R = 2.1

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