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Add. Write your answer in scientific notation. $\newline$ $(5.059 \times 10^4) + (2.7 \times 10^4)$ $\newline$ Choices: $\newline$ (A) $5.086 \times 10^4$ $\newline$ (B) $7.759 \times 10^8$ $\newline$ (C) $7.759 \times 10^4$ $\newline$ (D) $5.086 \times 10^8$

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Add and subtract numbers written in scientific notation

Full solution

Q. Add. Write your answer in scientific notation.

\newline

(5.059 \times 10^4) + (2.7 \times 10^4)

\newline

Choices:

\newline

(A)

5.086 \times 10^4

\newline

(B)

7.759 \times 10^8

\newline

(C)

7.759 \times 10^4

\newline

(D)

5.086 \times 10^8

Add Coefficients: Add the coefficients of the given numbers. $5.059 + 2.7 = 7.759$
Combine Exponents: Since the exponents of $10$ are the same, we can directly add the coefficients and keep the exponent unchanged. $\newline$ The sum in scientific notation is $7.759 \times 10^4$ .
Choose Correct Expression: Choose the equivalent expression for the final answer from the given choices. $\newline$ The correct choice is (C) $7.759 \times 10^4$ .

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