Recent content by cruisx

THis one? nCr pr qn-r so 11C10 (0.83)^10 * (0.17)^1. Well its late, ill come back in the morning and try it again.

hey so i am trying to solve the following question but i have no idea how to solve it. I am confused by the %'sConsider a similar study done that shows that 96 % of those born in Canada can swim but only 83 % of new Canadians can swim. In a random group of 11 new Canadians, find the probability...

Ok so i got the values for the left but the right eqn is nto going well. I do not understand what to do after cos^2x - 3(1-cos^2x)

Yes my derivative is cos^2x(cos^2x - 3sin^2x) so do i do 0 = cos^2x or 0 =cos^2x - 3sin^2x) and solve for both?

Homework Statement Hey, so i need some help trying to find the local max and min points for y = sinxcox3x Homework Equations The Attempt at a Solution I know i need to find the first and 2nd derivative but i do not know if i am doing it right. I also do not know what to do after wards. my...

Hi, so it seems that our next unit is derivatives so i am guessing i will have to find the tangent differently? can someone tell me how to find the tangent using (0,3) because it seems that it has to lead to a derivative or what ever that is. Will find out tomorrow.

well...um i forget how i got (-1,0) so i only needed to find (0,3)? and then after i find the tangent i am done? I think i got -1,0 because my x values were -1 and 0 so i subbed -1 into one of my equations to get (-1,0). So i should use (0,3) to find the common tangent?

Homework Statement Hi guys, need some help finding the common tangent of two curves. Two curves y = 3X3+6X2+6X+3 and y = 3X3+6X+3 touch each other. Find the common tangent. Homework Equations y = 3X3+6X2+6X+3 and y = 3X3+6X+3 The Attempt at a Solution well i made the two equations equal...

that would be MDHS Milton District High School (Canada) :smile: had the same sort of question on my assignment.

Yes that makes much more sense, thanks for the explanation. So you are saying that r is the distance between their centers so something liek this? http://img196.imageshack.us/img196/709/gravl.jpg Thanks, i am going to check over my solution one more time and see if i can come up with the...

Seems like a question from MDHS >_> =)

No, cepheid i am not fully understanding the actual physics behind that formula, i am have a bit of a hard time with Universal gravitation. Could you please explain to me if you have time?

Homework Statement A satellite circles planet X once every 99 min at a mean altitude of 530km. Calculate the mass of the Planet, if its radius is 5.78 * 10^6 So this is the Question i am having trouble with, these gravity questions are really killing me. Homework Equations...

Oh yes, that was a silly mistake, i forgot about that. And you so after your suggestion i got the value fo g to be -1.568 m/s2 And then i pluged it into the formula i mentioned in my first post and got the mass to be -7.117356522 * 1022

Ok so i think this is rigth but i don't know. So i used the 3rd motion eqn to find a. d = T +1/2a(T)^2 and then i found acceleration to be -2.1952 m/s^2 IS that the correct value i should be using for g?