Question

please help! medal to first person that answers! pic will be below!

Answer 1

@Isaiah.Feynman @jim_thompson5910 @

Answer 2

@Preetha @dan815 @satellite73

Answer 3

If someone could at least help with the second problem, ill be so grateful :) <3 just a short written explanation

Answer 4

HI!!

Answer 5

you know the \(y^2\) terms comes first, but all those have that choice

Answer 6

under the \(y^2\) goes \(3^2=9\)
that narrows it down to two choices

Answer 7

hmmm so is it A or D...

Answer 8

D correct?

Answer 9

yeah, 7^2= 49. so its the last choice

Answer 10

i don't think so

Answer 11

why

Answer 12

the foci are at \((0,\pm7)\) and it is true that \(y^2=49\) but that is not \(b^2\)

Answer 13

\(b^2=c^2-a^2=49-9=40\)

Answer 14

lets check the answer

Answer 15

ohh ok

Answer 16

http://www.wolframalpha.com/input/?i=hyperbola+y%5E2%2F9-x%5E2%2F40%3D1

Answer 17

thanks! do you know the second one? I started it but i think I messed up somewhere. can you check it please? <3

Answer 18

@misty1212