An observation point was originally in line with the top of a waterfall, but the waterfall moves a constant distance each year from erosion. the following graph shows the relationship between the time since 1998 and the distance the top of the waterfall is from the observation point. negative years represent time before 1998.

2.56 is the width of the garden

step-by-step explanation:

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation:

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.