Search our library of GCSE questions

Top answers

All subjects

GCSE

A right-angle triangle has a hypotenuse of 8cm and an angle of 30 degrees. What is the opposite's length?

sinx = o/h sinx x h =o sin30 x 8 = 4cm The opposite is 4cm

3595 Views

In what circumstances can an ionic compound conduct electricity? How?

An ionic compound in its molten or liquid form is able to conduct electricity due to the free movement of conducting metal ions that can carry charge

Answered by Jalini K. • Chemistry tutor

2436 Views

Explain how vaccines work.

Vaccinations are an injection of small amount of a dead or weakened form of a pathogen that provoke a primary immune response. This causes the body to produce the correct antibodies to remove the pathogen...

Answered by Eleanor M. • Biology tutor

3520 Views

Solve the simultaneous equations 5x+2y=13 and x-2y=5.

5x+2y=13 + x-2y = 5 6x =18Firstly you need to either add or subtract one equation from the other. The way to decide this is to either focus on the x's or the y's. The trick to solving these simult...

Answered by Amy J. • Maths tutor

5456 Views

Raya buys a van for £8500 plus VAT at 20%. Raya pays a deposit for the van. She then pays the rest of the cost in 12 equal payments of £531.25 each month. Find the ratio of the deposit Raya pays to the total of the 12 equal payments.

First find total cost with VAT. £85001.2 = £10200
To find deposit:£10200 - (12£531.25) = £ 3825
To find ratio:3825 : (12*531.25)3825 : 63751 : (6375/3825)1 : 1.6^.

Answered by Meg P. • Maths tutor

5354 Views