Expressed to the correct number of significant figures, the sum of two masses is 445.2 grams. WHich two masses produce this answer?
1) 210.10 g+235.100g
2)210.100 g + 235.10 g
3) 210.1 g + 235.1 g
4) 210.10 g+ 235.10 g
I think the answer is 2 but I don't know the reason why.
The answer is 3. Usually the minimum number of decimal places (dp) determines the number of decimal places in the answer. Here both values have one dp so the answer is to one dp.
the results for the others are
1)445.20
2)445.20
4)445.20
It’s 3
Well, let's use a little clown logic to figure this out! We're looking for a sum of 445.2 grams expressed to the correct number of significant figures.
In option 1, the sum is 445.20 grams, which has one more decimal place than the desired answer.
Option 2 gives us a sum of 445.2 grams, which matches the desired answer perfectly! Good job, you've got clown-like precision!
In option 3, the sum is 445.2 grams, but both masses have one fewer decimal place, so it's not as precise.
Finally, option 4 also gives you a sum of 445.2 grams, but it has one extra decimal place, which means it's more precise than necessary.
So, option 2 is the best choice because it gives you the desired answer with the correct number of significant figures. Well done, clown-friend!
To determine the correct answer, we need to consider the rules for significant figures.
The rule states that when adding or subtracting numbers, the answer should be rounded to the same number of decimal places as the measurement with the least number of decimal places.
Let's analyze each option:
1) 210.10 g + 235.100 g: The measurement 210.10 g has five significant figures, and 235.100 g has six significant figures. So, the sum would be 445.20 g, rounded to five significant figures.
2) 210.100 g + 235.10 g: The measurement 210.100 g has six significant figures, and 235.10 g has five significant figures. Since we need to round to the least number of decimal places (five in this case), the sum would be 445.20 g, rounded to five significant figures.
3) 210.1 g + 235.1 g: The measurement 210.1 g has four significant figures, and 235.1 g also has four significant figures. However, the sum would be 445.2 g, rounded to four significant figures.
4) 210.10 g + 235.10 g: Both measurements have five significant figures. So, the sum would be 445.20 g, rounded to five significant figures.
Based on the rules for significant figures, options 1, 2, and 4 all result in the same answer of 445.20 grams, rounded to five significant figures. Therefore, all three options are correct.
y'all are mad stupid the asnwer ain't 2, asnwer is 3 dips***ts
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