Search our library of GCSE questions

Top answers

All subjects

GCSE

Solve 4(x+3)=2x+8

Expand brackets on LHS4x+12=2x+8Collect "like" terms4x-2x=8-122x=-4Divide both sides by 2 to solve for xx=-4/2=-2Final Answerx=-2

Answered by Joe M. • Maths tutor

3266 Views

Panama is a strip of land that has separated the Pacific Ocean and the Caribbean Sea for the past 3 million years. Explain how two different species of pistol shrimp could have developed from an ancestral species of shrimp

Panama has acted as a geographical barrier, separating two populations of ancestral shrimp - one in the Pacific and one in the Caribbean Sea.Random mutations will occur in both populations.Natural selecti...

Answered by Daniel R. • Biology tutor

8028 Views

Explain why chlorine is more reactive than iodine.

Chlorine’s outer electrons / shell closer to the nucleus so the chlorine nucleus has greater attraction for outer electrons / shell and therefore chlorine gains an electron more easily.

Answered by Janani N. • Chemistry tutor

1887 Views

Using the amygdala as a biological explanation of aggression, explain why Tim is fighting with his classmates

Damage to the amygdala can cause an inability to control aggression. Tim may have damage to his amygdala caused by a tumour that is pressing against it thus causing him to become aggressive.

Answered by Aimei-Lee A. • Psychology tutor

1483 Views

What are supply side policies and how do they effect the economy?

Supply side policies focus on the production side of the economy which can be manipulated by taxes, regulatory policy or monetary policy (interest rates/ supply of money).
These policies are importa...

Answered by Laura A. • Economics tutor

2585 Views