Respuesta :

The sum of 3.0478 and 4.92 is [tex]7.9678[/tex], which have 5 significant digits.

Step-by-step explanation:

We have , [tex]Number1 = 3.0478[/tex] and [tex]Number2 =4.92[/tex] . The significant digits of a number are digits that includes all digits except:

  • All leading zeros. For example, "013" has two significant figures: 1 and 3;
  • Trailing zeros when they are merely placeholders to indicate the scale of the number and  ,
  • Spurious digits introduced, for example, by calculations carried out to greater precision than that of the original data, or measurements reported to a greater precision than the equipment supports.

Here [tex]Number1 = 3.0478[/tex] and with significant digit rules [tex]Number2 = 4.9200[/tex] . Now, Sum of both numbers = [tex]Number1 + Number2[/tex]

⇒Sum of both numbers = [tex]3.0478 + 4.9200[/tex]

⇒Sum of both numbers = [tex]7.9678[/tex]

∴ The sum of 3.0478 and 4.92 is [tex]7.9678[/tex], which have 5 significant digits.

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Answer:

C. 7.9

Step-by-step explanation:

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