Omg guys, I need help with my math hw :(

[Emiley]

24) The number of diagonals of an n-sided polygon is 1/2(n to the 2nd power - 3n). How many diagonals would a 12-sided figure have?
F. 6 diagonals
G. 12 diagonals
H. 54 diagonals
I. 108 diagonals

H

25) What is the value of the expression 2n(3n + 8 to the 3rd power) when n = -3
A. -3018
B. -330
C. 1-42
D. 6252
A

27) Solve for x. x 0 5 = 22
A. x = -27
B. x = -17
C. x = 17
D. x = 27

@(you need an account to see links) ^ did you type that one right? Was the '0' meant to be something else?

---------- Post added at 10:54 PM ---------- Previous post was at 10:53 PM ----------

Also 16 is definitely 180

---------- Post added at 10:55 PM ---------- Previous post was at 10:54 PM ----------

And shhh @(you need an account to see links) lol this is hw I can actually *do* and I wants me an official clraikhood to join the ranks of your blue-names (though it's a sort of teal really)

Yes I typed it all. BTW I didn't mean to put a zero there.

---------- Post added at 06:05 PM ---------- Previous post was at 06:04 PM ----------

You can get almost all these answers from wolframalpha, 0 work

Well if I knew about that site I would of went to it instead of posting a thread and asking for help, thank you very much.

[trix]

@(you need an account to see links) did you get the right answer to 27? (:

Thanks for giving my brain something slightly more sophisticated than neo to do <3 and ty for the rep

[Emiley]

@(you need an account to see links) did you get the right answer to 27? (:

Thanks for giving my brain something slightly more sophisticated than neo to do <3 and ty for the rep

It has no answer right now, I don't think anyone answered it yet. No problem

[Zachafer]

27) Solve for x. x 5 = 22
A. x = -27
B. x = -17
C. x = 17
D. x = 27

It is either supposed to be x - 5 or x + 5

[trix]

Also for no.16 I am sure it's 180 !

[Emiley]

Okay, thanks everyone! I'll close the thread now that I got enough help.