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f(x) = 2x + c, g(x) = cx + 5, fg(x) = 6x + d. c and d are constants. Work out the value of d. 3 marks.

fg(x) = 2(cx+5) + c

= 2cx+10+c                           [1 mark]

fg(x) = 6x+d. fg(x) = 2cx+10+c

6x = 2cx and d = 10+c          [2 marks]

3 = c and therefore d = 13    [3 marks...

HK
Answered by Heba K. Maths tutor
21281 Views

Consider the Supermarket Industry. Tesco dominates the market with a 43% market share. Its closest rival is Sainsbury's with 19% of the market. Outline the potential costs and benefits of a merger between the two supermarkets.

Benefits:

Economics of scale- shown on graph (movement to lower part of LRAC curve) can potentially pass on cost savings

Profitability

shared resources

High tax revenue for the...

HV
Answered by Himesh V. Economics tutor
1916 Views

balance equation : PCl5 + 4H2O → H3PO4 + HCl

fist look at the first molecule on the left of the equation, the first atom is P there's 1 mole and looking at the right there is also only one. the look at the next atom Cl which has five mole, on the ri...

CM
13881 Views

Calculating the charge of a molecule e.g In NH4 what is the charge of the nitrogen atom?

For the atom which you want to calculate the charge determine the number of valence electrons a free atom usually has. this is the number of atom on the outer shell so for nitrogen, it has 5 valence atoms...

CM
8930 Views

How do you withdraw your hand from a painful stimulus?

Here we speak about the withdrawal reflex, and in particularly the flexor reflex which affects the muscle of a limb. This is a polysinaptic relfex because it can involve simultaneously the stimulation of ...

EP
5715 Views

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