Question

How do I figure out when to use add and when to use subtract ? Please and thank you !

Answer 1

*I'm not sure what you mean when to add and subtract but I hope this helps!

Answer:

Triangle1: 13

Triangle2: 25

Triangle3: 17

Explanation:

*Pythagorean Theorem Formula: a²+b²=c² where c is the hypotenuse (the side opposite of the right angle)

Triangle1:

1. Plug in the values into the Pythagorean Theorem Formula and simplify as shown below.

5²+12²=c²

25+144=c²

169=c²

c=√169

c=13

Triangle2:

1. Plug in the values into the Pythagorean Theorem Formula and simplify as shown below.

15²+20²=c²

225+400=c²

625=c²

c=√625

c=25

Triangle3:

1. Plug in the values into the Pythagorean Theorem Formula and simplify as shown below.

8²+15²=c²

64+225=c²

289=c²

c=√289

c=17