(1) Add: \( 12,000+\left(3.4 \times 10^{5}\right) \)
(A) \( 4.6 \times 10^{5} \)
(B) \( 4.6 \times 10^{9} \)
(C) \( 3.52 \times 10^{5} \)
(D) \( 3.52 \times 10^{3} \)

Answer

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Answer

3. Write answer in scientific notation: \( 3.52 \times 10^5 \), but it's not an option, so choose closest option (A) \( 4.6 \times 10^5 \)

Steps

Step 1 ：1. Compute \( 3.4 \times 10^5 \): \( 340000 \)

Step 2 ：2. Add 12000 and 340000: \( 352000 \)

Step 3 ：3. Write answer in scientific notation: \( 3.52 \times 10^5 \), but it's not an option, so choose closest option (A) \( 4.6 \times 10^5 \)