Subtract. Write your answer in scientific notation. (9.91 * 10^2) - (4 * 10^2) Choices: (A)8 * 10^2 (B)5.91 * 10^2 (C)9.1 * 10^2 (D)4.911 * 10^2

Identify Coefficients: We have: (9.91 * 10^2) - (4 * 10^2) Since the powers of 10 are the same, we can subtract the coefficients directly. What is 9.91 - 4? 9.91 - 4 = 5.91Convert to Scientific Notation: Write the answer in scientific notation. Substitute 5.91 for a and 2 for b in a * 10^b. Scientific notation: 5.91 * 10^2Find Equivalent Expression: Choose the equivalent expression for (9.91 * 10^2) - (4 * 10^2). (9.91 * 10^2) - (4 * 10^2) = 5.91 * 10^2 (9.91 * 10^2) - (4 * 10^2) is equivalent to 5.91 * 10^2.

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Subtract. Write your answer in scientific notation. $\newline$ $(9.91 \times 10^2) - (4 \times 10^2)$ $\newline$ Choices: $\newline$ (A) $8 \times 10^2$ $\newline$ (B) $5.91 \times 10^2$ $\newline$ (C) $9.1 \times 10^2$ $\newline$ (D) $4.911 \times 10^2$

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Math Problems

Algebra 1

Add and subtract numbers written in scientific notation

Full solution

Q. Subtract. Write your answer in scientific notation.

\newline

(9.91 \times 10^2) - (4 \times 10^2)

\newline

Choices:

\newline

(A)

8 \times 10^2

\newline

(B)

5.91 \times 10^2

\newline

(C)

9.1 \times 10^2

\newline

(D)

4.911 \times 10^2

Identify Coefficients: We have: $\newline$ $(9.91 \times 10^2) - (4 \times 10^2)$ $\newline$ Since the powers of $10$ are the same, we can subtract the coefficients directly. $\newline$ What is $9.91 - 4$ ? $\newline$ $9.91 - 4 = 5.91$
Convert to Scientific Notation: Write the answer in scientific notation. $\newline$ Substitute $5.91$ for $a$ and $2$ for $b$ in $a \times 10^b$ . $\newline$ Scientific notation: $5.91 \times 10^2$
Find Equivalent Expression: Choose the equivalent expression for $(9.91 \times 10^2) - (4 \times 10^2)$ . $(9.91 \times 10^2) - (4 \times 10^2) = 5.91 \times 10^2$ $(9.91 \times 10^2) - (4 \times 10^2)$ is equivalent to $5.91 \times 10^2$ .