a shoreline is eroding at a rate of one third foot per three months. How many feet are eroding per year?
No, Ana you must be confused the answer is 4/3 because the question say's 1/3 foot per 3 months. Then it ask's what is it per year, as we all know a year is 12 month's. So you do 4x3=12 so you 1/3+1/3+1/3+1/3. (1/3 four times) That is 4/3. So the denominator always stay's the same and the numerator....well you're just doing 1x4=4 so it's pretty basic.
To find out how many feet are eroding per year, we need to convert the erosion rate from three months to one year.
Given that the erosion rate is one third of a foot per three months, we need to find the number of three-month periods in a year. There are 12 months in a year, so we can divide 12 by 3 to find the number of three-month periods in a year:
12 months ÷ 3 months = 4 three-month periods in a year
Now, we can calculate the erosion rate per year by multiplying the rate per three months (one third foot) by the number of three-month periods in a year (4):
(1/3 foot per 3 months) × (4 three-month periods in a year) = 4/3 feet per year
Therefore, the shoreline is eroding at a rate of 4/3 feet per year.