Math help

Tyreaus Dreacon wrote:

daledude wrote:

Tyreaus Dreacon wrote:

daledude wrote:

Tyreaus Dreacon wrote:

daledude wrote: I think I messed something up with 14. The roots aren’t in the right spots. I think I’m approaching it in the right way though. Maybe try working it out from the beginning again...

I thought it was (x 4)^2 = (5x 2)(x-2) is what I got...

Are you sure those (x 4)'s don’t cancel?

Doesn’t make sense they would. If you have
(5x 2)/(x 4) = (x 4)/(x-2)
You’d need to multiply both sides by (x 4) and (x-2) to get rid of them on each side...
I think. o.o

Oh wait. I fucked up. There’s an = there not an * doh!

lol, yeah and I got some confusing thing like, 5 and -2 or something stupid...

I got 5 and -1 which both work if you plug them in.

r=-1 for x=-1 and r=3 for x=5

I just realized it’s asking for r so this is the answer, lol.

I’m determined to live forever, or die trying. - Yossarian

daledude wrote:

Tyreaus Dreacon wrote:

daledude wrote:

Tyreaus Dreacon wrote:

daledude wrote:

Tyreaus Dreacon wrote:

daledude wrote: I think I messed something up with 14. The roots aren’t in the right spots. I think I’m approaching it in the right way though. Maybe try working it out from the beginning again...

I thought it was (x 4)^2 = (5x 2)(x-2) is what I got...

Are you sure those (x 4)'s don’t cancel?

Doesn’t make sense they would. If you have
(5x 2)/(x 4) = (x 4)/(x-2)
You’d need to multiply both sides by (x 4) and (x-2) to get rid of them on each side...
I think. o.o

Oh wait. I fucked up. There’s an = there not an * doh!

lol, yeah and I got some confusing thing like, 5 and -2 or something stupid...

I got 5 and -1 which both work if you plug them in.

r=-1 for x=-1 and r=3 for x=5

I just realized it’s asking for r so this is the answer, lol.

Yeah yet it isn’t any of the answers given. Just like that other one where we both got 4(10^1/2) I think...no that one was the wrong one...

Tyreaus Dreacon wrote:

daledude wrote:

Tyreaus Dreacon wrote:

daledude wrote:

Tyreaus Dreacon wrote:

daledude wrote:

Tyreaus Dreacon wrote:

daledude wrote: I think I messed something up with 14. The roots aren’t in the right spots. I think I’m approaching it in the right way though. Maybe try working it out from the beginning again...

I thought it was (x 4)^2 = (5x 2)(x-2) is what I got...

Are you sure those (x 4)'s don’t cancel?

Doesn’t make sense they would. If you have
(5x 2)/(x 4) = (x 4)/(x-2)
You’d need to multiply both sides by (x 4) and (x-2) to get rid of them on each side...
I think. o.o

Oh wait. I fucked up. There’s an = there not an * doh!

lol, yeah and I got some confusing thing like, 5 and -2 or something stupid...

I got 5 and -1 which both work if you plug them in.

r=-1 for x=-1 and r=3 for x=5

I just realized it’s asking for r so this is the answer, lol.

Yeah yet it isn’t any of the answers given. Just like that other one where we both got 4(10^1/2) I think...no that one was the wrong one...

It’s just missing a negative sign on the one. I stand by my answer, lol

I’m determined to live forever, or die trying. - Yossarian

Oh shit yeah after I figure it out and read what you wrote again yes it does work. lol

So did we get them all yet?

I’m determined to live forever, or die trying. - Yossarian

Well we both got the same answer for 33, which was apparently wrong...(you got 4(10^1/2) no?)

And, I don’t know what I messed up on 26, cause the answer is A so I’m only 60 off...

Darth Tyreaus wrote: Well we both got the same answer for 33, which was apparently wrong...(you got 4(10^1/2) no?)

And, I don’t know what I messed up on 26, cause the answer is A so I’m only 60 off...

This is lookin to be a pretty poorly put together answer sheet, lol. I got 13660 as well.

I’m determined to live forever, or die trying. - Yossarian

Yeah...it’s lovely init? xD

Tyreaus Dreacon wrote: Yeah...it’s lovely init? xD

Well then I’d say my work here is done. I should be a math tutor, lol.

I’m determined to live forever, or die trying. - Yossarian

Aye, Many thanks mate. ^^

26. Evaluate: Sum up all the terms of 5(-2)^k-1 from, and including, K=3 to K=13
(This is in sigma notation, a 13 on the top and K=3 at the bottom)
(a) 13600
(b) 13655
(c) -13651.67
(d) -13646.67

this question is invalid cause the answer is 13660 =) prove wrong by mrs H =P or daniel and mrs H sayed he was right or was it dan xD well i know who u are =P mauhaha

Blondie-604 wrote: 26. Evaluate: Sum up all the terms of 5(-2)^k-1 from, and including, K=3 to K=13
(This is in sigma notation, a 13 on the top and K=3 at the bottom)
(a) 13600
(b) 13655
(c) -13651.67
(d) -13646.67

this question is invalid cause the answer is 13660 =) prove wrong by mrs H =P or daniel and mrs H sayed he was right or was it dan xD well i know who u are =P mauhaha

Haha yeah I was figuring that. So who’s the creepy one following me around the interwebs?