Which of the following equations is used to find the value of c?

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Question

Which of the following equations is used to find the value of c?

pic attahced

anonymous · Answer

attachment

anonymous · Answer

you are missing a pic.

anonymous · Answer

@Romero huh?

anonymous · Answer

I don't think this is a complete question... if you don't have the values of a and b, then these all seem to be same question after all. All are equally solvable.

anonymous · Answer

You don't have enough information.

anonymous · Answer

Depending on values of a and b and whether you want a complex no. or not.. the answer varies

anonymous · Answer

For now all of the choices are valid until we get more information

anonymous · Answer

Thats all the information i was given. Its like saying which equation would we use to find the value of c if there were a and b .. idk im confused thats why I asked this question..

anonymous · Answer

what subject are you learning right now?

anonymous · Answer

pre calc sem.1

shane_b · Answer

If it's pre-calc it's probably just asking about the Pythagorean Theorem and how to find the hypotenuse of a right triangle.$$a^2+b^2=c^2$$That's just my guess anyway...

anonymous · Answer

http://www.mathwarehouse.com/ellipse/focus-of-ellipse.php i found this but it says a^2-b^2= c^2 an thats not an option.. :( so i think @Shane_B is right

shane_b · Answer

I'm 99% sure it's c.

anonymous · Answer

ok thanks !! :)