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Calculate the rate of change of d(t )=2/(3t), t ≠ 0, when t=6.

When a question asks for rate of change, this means you need to differentiate the equation. First you need to put the equation into differentiable a form ie, with the no variables on the denominator: f(t) = ...
LI
Answered by Lucy I. • Maths tutor
2710 Views

Answer quadratic equation in the simplest surd form/ exact from. 5-2x-x^2=0

5-2x-x 2 =0x 2 +2x-5=0 (moving everything over to the other side)then using the quadratic formula (to use a whiteboard during interview)a=1, b=2, c=-5x=(-2 +/- √(2^2 - 4x1x-5))/(2x1)x=(-2 +/- √(4+20))/2x=(-2...
SO
Answered by Seun O. • Maths tutor
4363 Views

Show that (x + 1)(x + 3)(x + 5) can be written in the form ax^3 + bx^2 + c^x + d where a, b, c and d are positive integers.

The way to go about a question like this is to break it down into steps; rather than trying to multiply all the brackets at once expand two first then multiply by the third. ---------------------------------...
MB
14399 Views

How to solve a quadratic equation.

Group the like terms together to make the equation less messy leaving the equation equal to 0.Simplify the long quadratic equation into brackets.Each bracket must be equal to 0 to fulfil the equation.When a ...
IB
Answered by Imikan B. • Maths tutor
3361 Views

y = (x + 2)(x + 5)

steps as follows:x times x = x 2 2 times 5 = 102 times x = 2xx times 5 = 5xthen add these together:y = x 2 + 7x +10x = -2, -5; y = 0, 10
GL
Answered by Georgie L. • Maths tutor
2943 Views