Answer:
6.75
Step-by-step explanation:
Since, when we rounded a decimal number to 2 significant figures,
We check the thousandth digit, ( third digit after decimal )
If thousandth digit is less than 5 then the hundredth digit ( second digit after decimal ) will be rounded to preceding number while if it is 5 or more than 5 then the hundredth digit will be rounded to succeeding number,
∵ 9 > 5
Hence, 6.7493 ≈ 6.75
To find how much the temperature fell we must find the difference of both numbers and to do this we subtract them;
20 - (-5) = 25 degrees
To find the ratio of mystery books to the total, divide the number of mystery books by the total number of books and simplify the ratio if possible.
To find the ratio of mystery books to the total, we need to divide the number of mystery books by the total number of books and simplify the ratio if possible.
In this case, the number of mystery books is 12 and the total number of books is 48. So, the ratio of mystery books to the total is 12:48.
We can simplify this ratio by dividing both the numerator and denominator by 12. This gives us a simplified ratio of 1:4.
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