You calculate the following answer to a problem: 12.655 cm. you are asked to round your answer to four significant figures. which answer is correct?
a. 12.66 cm
b. 12.65 cm
c. 12.60 cm
d. 12.70 cm

Significant figures basically means you have x digits from the first digit that is not a 0.
Since 12.655 doesn't start with a zero we start counting from the 1, and 4 figures takes us to 12.65. However the digit after that is a 5 so we round it up to 12.66.

Therefore the answer is A.

Sample response: Draw one whole fraction bar. Next, draw 6 equal bars under it, since you are dividing by sixths. Then draw a twelfths fraction bar with 2 twelfths for each sixth bar. Above the twelfths bar, circle groups of 4 sixths. There is one group of 4/6 with 1/6 remaining. Since 1/6 is 1/4 of 4/6, the quotient is 1 1/4.

Step-by-step explanation:

i just did it like just did it so i have the Sample response

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