Help would be very much appreciated;)

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

1-c

2-a

3-a

4-c

5-d

6-a

7-c

8-a

9-a

10-d

step-by-step explanation: