You write 100 as the denominator because 100 represents a whole whereas the numerator normally represents a percentage. Hope this helps!
We have been given that during one period extreme cold, the average daily temperature decreased
degree F each day. We are asked to find number of days it will take for the temperature to decrease by 9 degree F.
First of all we will convert our mixed fraction into improper fraction.

Now we will divide total temperature change (9) by average daily temperature change (
) to find number of days.

Dividing a number by a fraction is same as multiplying the number by reciprocal of the fraction.


Therefore, it will take 6 days for the temperature to decrease by 9 degree F.
Answer:
70 years old
Step-by-step explanation:
300 - 160 = 140
140 ÷ 2 = 70
1:B, 2:A, 3:D, 4:A
those are the answers