Add. Write your answer in scientific notation. (5 * 10^5) + (3.9 * 10^5) Choices: (A)7.2 * 10^5 (B)8.9 * 10^5 (C)7.2 * 10^10 (D)8.9 * 10^10

Identify Expression: We have the following expression to add: (5 * 10^5) + (3.9 * 10^5) Since the powers of 10 are the same, we can directly add the coefficients. What is 5 + 3.9? 5 + 3.9 = 8.9Add Coefficients: Write the answer in scientific notation. Substitute 8.9 for the coefficient and 5 for the exponent in the form a * 10^b. Scientific notation: 8.9 * 10^5Convert to Scientific Notation: Choose the equivalent expression for (5 * 10^5) + (3.9 * 10^5). (5 * 10^5) + (3.9 * 10^5) = 8.9 * 10^5 The correct choice is (B) 8.9 * 10^5.

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Add. Write your answer in scientific notation. $\newline$ $(5 \times 10^5) + (3.9 \times 10^5)$ $\newline$ Choices: $\newline$ (A) $7.2 \times 10^5$ $\newline$ (B) $8.9 \times 10^5$ $\newline$ (C) $7.2 \times 10^{10}$ $\newline$ (D) $8.9 \times 10^{10}$

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Math Problems

Algebra 1

Add and subtract numbers written in scientific notation

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Q. Add. Write your answer in scientific notation.

\newline

(5 \times 10^5) + (3.9 \times 10^5)

\newline

Choices:

\newline

(A)

7.2 \times 10^5

\newline

(B)

8.9 \times 10^5

\newline

(C)

7.2 \times 10^{10}

\newline

(D)

8.9 \times 10^{10}

Identify Expression: We have the following expression to add: $\newline$ $(5 \times 10^5) + (3.9 \times 10^5)$ $\newline$ Since the powers of $10$ are the same, we can directly add the coefficients. $\newline$ What is $5 + 3.9$ ? $\newline$ $5 + 3.9 = 8.9$
Add Coefficients: Write the answer in scientific notation. $\newline$ Substitute $8.9$ for the coefficient and $5$ for the exponent in the form $a \times 10^b$ . $\newline$ Scientific notation: $8.9 \times 10^5$
Convert to Scientific Notation: Choose the equivalent expression for $(5 \times 10^5) + (3.9 \times 10^5)$ . $(5 \times 10^5) + (3.9 \times 10^5) = 8.9 \times 10^5$ The correct choice is (B) $8.9 \times 10^5$ .