Homework Help - Math

[Phoenix-Warbird 1,329]

i get on tanki to AVOID math

[Klankill804 753]

^ Please no discussion like @sachet100 said. Let us respect what he said :)

[FaaiqBilal1 795]

Ain't I

'ain't I' is a slang. 'Aren't I' is proper English. 

[ALEKSEJ0077 150]

I am not going to do anyone's homework OK

 

I got a question : A dude wants to swim across a river 10M wide flowing at 2 Metres per second and the dude swimming at an angle of 30 Degrees at a pace of 5 metres per sec. How much does the dude go off target by the flow of the river.

Is there anybody smart enough here to solve this. I guess not

[abdullahtss 5]

^^

the answer is 9.7 or 10 meters because applying the "TOA" rule in trigonometry the person will travel 5.7 meters, but the flow of the river will increase the distance by 4 meters

this is because, the dude is in water for 2 seconds and the flow of the river is 2m/s so :

2s x 2m/s= 4m/s

[deadmanrising 715]

New question!

 

I need to differntiate this

 

- A cos (at - kx) / at

 

I got this

 

A at sin (at ^ -1( at - kx )

 

Am i right?

Edited December 13, 2014 by deadmanrising

[Shadows_3000 58]

+1 question

 

What is this ?

 

50j-30i

 

what does j and i mean?

[deadmanrising 715]

+1 question

 

What is this ?

 

50j-30i

 

what does j and i mean?

They are algerbraic letters of the numbers, j and i are two different letters, so you just leave the answer the same, if it was 50i - 30i the answer would be 20i

[Shadows_3000 58]

They are algerbraic letters of the numbers, j and i are two different letters, so you just leave the answer the same, if it was 50i - 30i the answer would be 20i

I found that in physics

[doughnut2100 763]

+1 question

 

What is this ?

 

50j-30i

 

what does j and i mean?

If you are doing complex numbers, then you cannot do much with that. They are both technically algebraic variables, as stated before, but i is a complex number. If you have not learned about them yet, They are both just variables. :lol: Edited December 13, 2014 by doughnut2100

[deadmanrising 715]

If you are doing complex numbers, then you cannot do much with that. They are both technically algebraic variables, as stated before, but i is a complex number. If you have not learned about them yet, They are both just variables. :lol:

Ive seen it in forces and sachet diagrams, could you give us the full question?

[doughnut2100 763]

Ive seen it in forces and sachet diagrams, could you give us the full question?

What do you mean?

[ProperAuthority 9]

+1 question

 

What is this ?

 

50j-30i

 

what does j and i mean?

'i','j','k' represent x,y,z axis respectively in vector algebra.

 

Ex:(1,2,3)  in a 3-dimensional plane can be represented as 1i+2j+3k.

[eskhorshid 195]

(x-y)(x+y)= x^2 - y^2

is it true :P?

[doughnut2100 763]

Yes.

[eskhorshid 195]

Yes.

Thanks :lol:

[eskhorshid 195]

m=abc/a-b

b=?

[doughnut2100 763]

B=abc/a-m? It was a quick answer lol.

[eskhorshid 195]

B=abc/a-m? It was a quick answer lol.

LOL

False

a) ac+m/ma

b ) ma/ac+m

c) mc/ac+m

d) ac+m/mc

Choose one of it :P

Edited December 13, 2014 by eskhorshid

[ALEKSEJ0077 150]

What is the formula to calculating the area of a triangle with only the sides' length given ? 

[TriNitroToIuene 4,765]

I miss the days when math was actually numbers, not letters.

 

Anyway, here's my doubt - 

 

2^x = 4^y = 8^z 

(1/2x + 1/4y + 1/6z) = 24/7

Find z

 

Please help me

[vanshajwore 324]

Ummm.....

 

100X100+100+111X123X1+44X22%+22^4x10=?

Umm 135242057?

I miss the days when math was actually numbers, not letters.

 

Anyway, here's my doubt -

 

2^x = 4^y = 8^z

(1/2x + 1/4y + 1/6z) = 24/7

Find z

 

Please help me

38? Edited December 13, 2014 by vanshajwore

[ExtremeKiller26 443]

(x-y)(x+y)= x^2 - y^2

is it true :P?

 Use the little x^2 button on the top to show exponents. 

Like this: x² y²

[TriNitroToIuene 4,765]

38?

Can you show how you got that please?

And the answer shows 7/48

[eskhorshid 195]

Use the little x^2 button on the top to show exponents.

Like this: x² y²

It must be a "minus" between x^2 y^2 :P ( I can't cuz I'm browsing this page with my phone :P)