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Differentiate (2a+3)^5/2 with respect to a

Let u=2a+3, therefore du/da=2. Let y=u^5/2, therefore dy/du=5/2(u)^3/2 Hence dy/da=du/da*dy/du=2(5/2)*u^3/2=5u^3/2
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Answered by George T. • Maths tutor
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A pizza has a radius of 12cm. Calculate the area of the pizza in cm² , giving your answer as a multiple of π.

So for this question you would need to know the formula for the area of a circle. This is Area = πr^2. In this formula, r = the radius. We are given the radius in the question. So all we need to do is put ou...
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Answered by Jess H. • Maths tutor
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A 70Kg person jumps out of a plane and deploys a parachute, once the parachute is open the wind resistance acting on the person and the parachute is 900N. What is the direction and magnitude of the persons acceleration.

We start off by working out all the forces acting on the person and they're parachute, because they are joined together they can be considered as one object. We know the wind resistance and the only other fo...
JC
Answered by Joe C. • Physics tutor
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how do i approach more complex algebra questions?

With algebra there are 2 rules to abide to which will always see you through! Always do the same to both sides. Always do the opposite. In order to come to the correct answer you need to work backwards to is...
JD
Answered by Joanna D. • Maths tutor
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what is the difference between mitosis and meiosis

Both are cell divisions. Mitosis produces two identical daughter cells where the number of chromosomes is the same as the parent cell. These are used for growth, repair, asexual reproduction. Meiosis produce...
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Answered by Jack S. • Biology tutor
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