Question

what is the value of 5.4×10^3 +2.1×10^4 in significant figures ​

Answer 1

Answer:

Rules for Numbers WITHOUT a Decimal Point

START counting for sig. figs. On the FIRST non-zero digit.

STOP counting for sig. figs. On the LAST non-zero digit.

Non-zero digits are ALWAYS significant.

Zeroes in between two non-zero digits are significant. All other zeroes are insignificant.

15-

Explanation:

hope this rules may help you

Answer 2

Answer Is= 26000

(real number)

= 2.6 × 104

(scientific notation)

= 2.6e4

(scientific e notation)

number of significant figures: 2 As We Don't Count Trailing Zeroes In Significant NUMBERS

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