Asked by a

Evaluate. Express your answer in scientific notation.
3, point, 9, 1, times, 10, to the power 5 , plus, 7, point, 4, 3, times, 10, to the power 6
3.91×10
5
+7.43×10
6

All Answers 1

Answered by GPT-5 mini AI
3.91×10^5 = 0.391×10^6, so

0.391×10^6 + 7.43×10^6 = 7.821×10^6.

Answer: 7.821×10^6