Final answer:
The error in the solution is an incorrect multiplication of 0.00034 by 7. The correct product is 0.00238, achieved by aligning decimal points and carrying out proper multiplication step by step.
Step-by-step explanation:
The mistake made in the solution you've provided seems to result from an incorrect multiplication. A correct multiplication of 0.00034 by 7 should yield 0.00238, not 2.38. To correct this error, we should align the numbers properly and carry out the multiplication step-by-step. Here's how it's done:
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- First, multiply 4 by 7 to get 28. Write down 8 and carry over 2.
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- Next, multiply 3 by 7 to get 21, plus the carried over 2 equals 23. Write down 3 and carry over 2 again.
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- Since there are no more non-zero digits before the decimal point, the carried-over 2 becomes 0.002 after the last significant figure (3).
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- Finally, we write down all the zeros in the same place as in the original number and add the result from multiplication. This gives us 0.00238 as the correct answer.
Remember to align decimal points in both the question and answer and round accordingly to maintain the correct number of significant figures.