Add. Write your answer in scientific notation. (4 * 10^5) + (3.4 * 10^5) Choices: (A)3.8 * 10^5 (B)7.4 * 10^5 (C)7.4 * 10^10 (D)3.8 * 10^10

Identify Coefficients: We have: (4 * 10^5) + (3.4 * 10^5) Since the powers of 10 are the same, we can directly add the coefficients. What is 4 + 3.4? 4 + 3.4 = 7.4Convert to Scientific Notation: Write the answer in scientific notation. Substitute 7.4 for the coefficient and 5 for the exponent in a * 10^b. Scientific notation: 7.4 * 10^5Find Equivalent Expression: Choose the equivalent expression for (4 * 10^5) + (3.4 * 10^5). (4 * 10^5) + (3.4 * 10^5) = 7.4 * 10^5 (4 * 10^5) + (3.4 * 10^5) is equivalent to 7.4 * 10^5.

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Add. Write your answer in scientific notation. $\newline$ $(4 \times 10^5) + (3.4 \times 10^5)$ $\newline$ Choices: $\newline$ (A) $3.8 \times 10^5$ $\newline$ (B) $7.4 \times 10^5$ $\newline$ (C) $7.4 \times 10^{10}$ $\newline$ (D) $3.8 \times 10^{10}$

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Math Problems

Algebra 1

Add and subtract numbers written in scientific notation

Full solution

Q. Add. Write your answer in scientific notation.

\newline

(4 \times 10^5) + (3.4 \times 10^5)

\newline

Choices:

\newline

(A)

3.8 \times 10^5

\newline

(B)

7.4 \times 10^5

\newline

(C)

7.4 \times 10^{10}

\newline

(D)

3.8 \times 10^{10}

Identify Coefficients: We have: $\newline$ $(4 \times 10^5) + (3.4 \times 10^5)$ $\newline$ Since the powers of $10$ are the same, we can directly add the coefficients. $\newline$ What is $4 + 3.4$ ? $\newline$ $4 + 3.4 = 7.4$
Convert to Scientific Notation: Write the answer in scientific notation. $\newline$ Substitute $7.4$ for the coefficient and $5$ for the exponent in $a \times 10^b$ . $\newline$ Scientific notation: $7.4 \times 10^5$
Find Equivalent Expression: Choose the equivalent expression for $(4 \times 10^5) + (3.4 \times 10^5)$ . $(4 \times 10^5) + (3.4 \times 10^5) = 7.4 \times 10^5$ $(4 \times 10^5) + (3.4 \times 10^5)$ is equivalent to $7.4 \times 10^5$ .