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Mathematics 15 Online
OpenStudy (anonymous):

@Mertsj

OpenStudy (anonymous):

mathslover (mathslover):

What do you think about this question?

OpenStudy (anonymous):

what ? i dont understand

mathslover (mathslover):

What can be the first step to solve this question?

OpenStudy (anonymous):

knowing that it is solid?

mathslover (mathslover):

Mertsj, will continue!

OpenStudy (mertsj):

First of all eliminate the one that does not have an x^2 and y^2

OpenStudy (anonymous):

d

OpenStudy (mertsj):

Then the easiest way to solve is to use the origin and see which equation is true when you plug in (0,0)

OpenStudy (anonymous):

in where?

OpenStudy (anonymous):

the equation ?

OpenStudy (mertsj):

Yes in equations a, b, and c

OpenStudy (anonymous):

ok what do i do after that

OpenStudy (mertsj):

Which one is true?

OpenStudy (anonymous):

c

OpenStudy (mertsj):

0+4 <= 0????

OpenStudy (anonymous):

a

OpenStudy (anonymous):

i think i did something wrong

OpenStudy (mertsj):

yes

OpenStudy (anonymous):

oooo ok i did it right thanks

OpenStudy (mertsj):

Good for you!!!

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