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There is a HUGE number of variables (local and global....el Nino, la Nina etc) that determine local temperature during a given year......that is why all of the climate models fail miserably and weather is difficult to predict.

  I expect what you are inquiring about for your scince class involves the 23 1/2 degree axis tilt of the Earth as it revolves around the sun.   In the summer the surface of the Earth is tilted TOWARD the sun and receives more direct sunlight (and you will see the sun gets higher in the sky during the day....and the days are LONGER)....the opposite in the Winter.    Actually, in the Northern Hemisphere , we are actually about 3 million mile closer to the Sun in our annual elliptical orbit around the Sun than in the Summer.

   The similar temp bands from year to year reflect our relative position in our orbit around the Sun.  In Spring, we are in the same position in our orbit as any other Spring....same for Summer, Winter and Fall.

The problem was indeed with the calculator setted on Rad instead of Deg...

Thank you very much for your help!

On the web2.0 calculator    hit the   2nd button     then the 'sin' button changes to 'asin'   hit that button...

   then enter ' -0.6049270855483636374'   and hit ' = '

NOTE :   In lower left corner whether you want degrees or Radians !

Thanks for the quick response!

I tried the asin function on the web2.0calc, but I didn't got what I wanted.

I typed:

sin(46) and got 0.901788347649

but when I tried to reverse it back to 46 I got this:

asin(0.901788347649) equals 1.123889803847.

Am I doing it right?

Use the ARCSIN function....also known/labelled as   asin   sometimes    and sometimes as sine inverse (sin^-1)

   On the web2.0 calc    hit the 2nd button and sin becomes   asin.....

Thought I answered this already, but I must have hit the wrong button to submit it.....

It is IMPOSSIBLE to say for sure without the THIRD volume dimension of the car and the chairs, BUT it appears that they would both fit (and maybe more if you alternately stack them)      Lay the chairs on their backsides with their legs to one side of the vehicle and they should both fit in next to each other (IF the third dimension will allow it)

I do not believe you need to factor it to be correct.    You found the derivative as asked.

Parallelogram area = base x height = 27 x 16 units^2    (432 units^2)

He simplified it further by factoring right? Do I not need to do that? 

That IS the same answer Alan posted!   Good work....

Thanks for the response! I used the quotient rule and got the answer (-6x^2-54)/(2x^2-18)^2

I'm not sure where I'm going wrong. 

yeah i noticed... congrats 

This was answerd just a day or two ago:

remember    cos(x+pi) = -cos(x)

d/dx (-cos(x)) = sinx      and at pi    sin(x) = 0

78 kl 5 l = 78.005 kl

56 kl 78l = 56.078 kl

78.005-56.078 = 21.927 kl = 21 kl 927 l

"What is the derivative of (3x)/(2x^2-18)?"

Let u = 3x and v = (2x²-18)^-1

Use the chain rule:  duv/dx = udv/dx + vdu/dx:

du/dx = 3      dvdx = -(2x²-18)^-24x

d(3x(2x²-18)^-1)/dx = -12x²(2x²-18)^-2 + 3(2x²-18)^-1 

or  (3(2x²-18) - 12x²)/(2x²-18)²   →  -(6x² + 54)/(2x²-18)² → -(3/2)(x² + 9)/(x² - 9)²

Given    7  r/s   3  b/r      then   21   b/s

232 = r + b + s

232 = 7s + 21 s +s      s  then equals 8 mi       7s = r = 56 mi       (and bike = 3r=168mi)

true

eh we all make mistakes man

The slope of the line tangent to a curve at a point is just the derivative of that curve evaluated at the point.

\(g(x) = \cos(x+\pi)\\ \dfrac{dg}{dx}(x) = -\sin(x+\pi)\\ \dfrac{dg}{dx}(\pi) = -\sin(\pi + \pi) = \\ \sin(2\pi) = 0\\ \text{hence the slope of the line tangent to }g(x) \text{ at }x=\pi \text{ equals }0.\)

Volume of sphere: \(\frac{4}{3}\pi r^3\)    r = 4cm

Volume of cone:  \(\frac{1}{3}\pi r^2h\)   r = 3cm   h = 12cm

Plug in the numbers to see which is larger.

No.