The ratio of the number of andy's seashells to the number of ben's seashells is 4:9 . andy has 100 seashells. how many seashells does ben have?

Ben has 225 seashells

Step-by-step explanation:

Step 1:  Use the ratio to see how many times the amount Andy has

4 * n = 100

4n / 4 = 100 / 4

n = 25 times the amount of the ratio

Step 2:  Find out how many shells Ben has

Use the 25 times the ratio to help

9 * 25

225

 Ben has 225 seashells

Check:  See if the ratio still works

Andy = 100

Ben = 225

100 : 225

(100/25) : (225/25)

4 : 9 -> Correct, so the answer is good

45

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.