Search our library of GCSE questions

Top answers

All subjects

GCSE

f(x)=2x+c, g(x) = cx+5, fg(x)= 6x+d, work out the value of d

Let’s call (f(x)=2x+c) equation 1, (g(x) = cx+5) equation 2 and (fg(x)= 6x+d) equation 3.
Start by finding fg(x) in terms of c by substituting (equation 2) into (equation 1) to get (fg(x)= 2(cx +5) +...

Answered by Anna M. • Maths tutor

4088 Views

Translate the following sentence into Spanish: 'The rocket was built by European engineers in the USA six months ago'

El cohete fue construido por ingenieros europeos en EE. UU. hace 6 meses. Ingenieros: we have to remember that in Spanish the noun goes before the adjectives, so t...

Answered by Mateo M. • Spanish tutor

2094 Views

Describe the changes in pupil size when light is shined into the eye. Explain why this happens.

The pupil constricts (becomes smaller) to decrease the light entering the eye. This prevents damage to the eye.

Answered by Melissa K. • Biology tutor

3504 Views

Solve the equation: x^2+x-12=0

x=-4, x=3

Answered by Jordan H. • Maths tutor

3411 Views

Describe the difference between genotype and phenotype and give an example of where two different genetoypes may give rise to the same phenotype.

A genotype refers to the combination of alleles present that give rise to a certain characteristic.A phenotype refers to the actual physical characteristic as it is seen.An example would be whereby a flow...

Answered by Niamh M. • Biology tutor

4905 Views