Nimnath

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3. About probability and statistics on Khan academy.

No need for calculus to cover the topics on Khan Academy. But, if you wish to study probability and statistics at the college level you will have to be familiar with multivariable calculus and line...

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3. Math trick

Let the number be n. n*5 +8 -3 = (5n+5)/5 = n+1- n = 1 +8-3 can be combined to +5

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3. Quadratic Equations

There are multiple techniques, for example, solving by factoring, by quadratic equation etc. Have a look here: https://www.khanacademy.org/math/algebra/quadratics

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3. I Desperately Need Help With Geometry!!!

If you sketch the prism, then it will be easier to see how the cubes can be stacked inside. On the 2.5 cm * 2 cm bases you can stack 5 * 4 (20) cubes. Since the prism is 1cm of height, you can have...

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3. How to build the equation for the word problem?

Let load of truck be m (in kg). Let speed of unloading of Shaun be x (kg/hour) Then speed of unloading of Jack is 2x. m/(2x+x) = 5 (hours) => m = 15x (kg) If working alone: Shaun = 15x/x = 15 (hour...

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3. How do I find the derivative of a function with x in the exponent?

https://www.khanacademy.org/math/differential-calculus/dc-chain/modal/v/exponential-functions-differentiation-intro  

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3. I need help with understanding this triangle problem

Take the small triangle where the pi/2-beta has been marked. The remaining angle (that is not the right angle) = pi -(pi/2-beta + pi /2) = beta Now tan(beta) = s / t and s / t = tan(0.697) < given>...

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3. Statistics and probability

Whilst I am not able to give you the exact breakdown I can share with you the path I followed. I studied economics at grad level, so I did learn many of the calculus topics. But when I started to l...

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3. Calculus differentiation - finding maxima of combined area

Hi Lola, This looks like a minimization problem to me. You can solve this using single variable cal or multiple variable cal. In single variable calculus: optimize pi*x^2 + y^2 we know 2*pi*x+ 4*y ...

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3. I still struggle with trig functions and cube roots

Hi Pauline, I generally only use only the following  when caculating the relevant derivatives or integrals. sin^2+cos^2 =1 cos(a+b) = cos(a)cos(b) - sin(a)sin(b) sin(a+b)= sin(a)cos(b) + cos(a)sin(...