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Solve by factorisation: 2(x^2) - 5x - 12 = 0

First step is to multiply coefficient of first term (2) with the constant (-12) to enable us to split the middle term.2*(-12) = -24, therefore we need to find two numbers that multiply to -24, and add to giv...
EC
Answered by Edward C. • Maths tutor
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What is meant by horizontal and vertical integration and how can they profit a firm?

Firms may grow through integration - vertically or horizontally. Both strategies ultimately increase a firm's competitive position. Vertical integration refers to the supply chain and how a company can grow ...
MP
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If y = ln (x+1) sin x , find dy/dx

u = ln (x+1) v = sin x du/dx = 1/(x+1) dv/dx = cos x Therefore, by the product rule, dy/dx = [sin x / x+1] + [ln (x+1) cos x]
EC
Answered by Edward C. • Maths tutor
7174 Views

Using a price ceiling diagram, analyse the impact a maximum price might have on the market for food.

A maximum price is a price set below the market equilibrium by the government which firms are not allowed to exceed. This can result in creating disequilibrium in the market resulting in excess demand. In th...
IM
Answered by Izma M. • Economics tutor
9128 Views

X, a gas, has a mass of 0.270g and is present in a gas syringe with a volume of 105.0cm^3 at 97C and 100kPa. Calculate the Mr of X. (5 marks)

This is a classic A-level question which uses the formula:PV=nRT First, this equation (which needs to be learnt, it is not given in the exam papers) must be rearranged to:n=PV/RTWhat all these letters in the...
JB
Answered by Jack B. • Chemistry tutor
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