jevonewilliams8397 jevonewilliams8397
  • 06-11-2017
  • Mathematics
contestada

If f = a + b give the value of f with its error if a = 21 ± 3 and b = 18 ± 4.

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Rod44 Rod44
  • 06-11-2017

Minimum value of a is 18 and minimum value of b is 14.
Maximum value of a is 24 and maximum value of b is 22.
Minimum value of sum is 32, maximum value of sum is 46.
Average of 32 and 46=39 so f=39±7.
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