The answer is the first choice: 7, 15, 20.
When you want to know what three numbers can make up a triangle. All you have to do is take the first two numbers and add them up. If the sum is larger than the third number, it can form a triangle. If the sum of the first two numbers are smaller than the third number, it cannot form a triangle.
Hope this helped
37.5
9/24=0.375
Move the decimal two places and you get 37.5%
3 ways because 12 divided by 4 is 3.
