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

Step-by-step 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