Question

Can someone please check my work?

Answer 1

What is it?

Answer 2

just a sec, im posting it...

Answer 3

Alrighty

Answer 4

\[9x ^{2}-4y ^{^{2}}-54x-40y-55=0\]
\[\frac{ (x-3^{2}) }{ 4 }-\frac{ (y-5)^{2} }{ -9 }=1\] Standard form
so center is (3,5)

Answer 5

I think thats (x-3)^2 ?

Answer 6

yes, sorry typo

Answer 7

Also, why did you write -9 in denominator ?

Answer 8

because i got 36/-4
i need to find the foci,vertices, and retricemptotes

Answer 9

*retricemptotes

Answer 10

why wont it let me write retricemptotes?

Answer 11

First of all I would suggest you to check your work again.

Answer 12

(asymptotes)

Answer 13

I think that should be 9 in denominator.

Answer 14

ok i think i just saw that as a -4 not minus 4

Answer 15

So, did you get your mistake?

Answer 16

yep, can you help me find the foci, vertices, and asymptotes?

Answer 17

Yeah sure. Whats your approach ?

Answer 18

well since a is under the y^2 i need to use (h, k+c) (h,k-c) to find the foci, right?

Answer 19

so is thats: \[(3, 5+\sqrt{13}) (3,5-\sqrt{13})\]

Answer 20

Just a minute let me check it

Answer 21

No that's wring

Answer 22

I would suggest you to go through this link

http://calculator.tutorvista.com/hyperbola-calculator.html

Answer 23

thanks

Answer 24

np