Which of the following sets of numbers could represent the three sides of a right triangle?
21, 72, 75,
7, 8, 10
8, 12, 15
14, 84, 85

21 , 72 , 75

Step-by-step explanation:

The one that could represent the three sides of a right angle triangle must obey Pythagoras theorem , that is

a=side of right triangle

b=side of right triangle

c=hypotenuse

Let's check the sides one after the other

1.

this means that

this could represent the three sides of a right triangle

2.

3.

4.

Therefore , the only combination that could represent the three sides of a right triangle will be 21 , 72 , 75

i think the amount would be $140.62

a.)the line for function b is steeper