Search our library of GCSE questions

Top answers

All subjects

GCSE

How would I find the formula for the nth term of a sequence such as 3, 7, 11, 15, 19?

This is an example of a linear sequence which will always have the formula: u_n=an+b.Where 'a' is the common difference between each term and 'b' is ...

Answered by Tommy G. • Maths tutor

3546 Views

gradient and differentiation

dy/dxfirst principal

Answered by Yubin Z. • Maths tutor

2478 Views

solve the simultaneous equation: 5x+y =21 and x-3y=9

5x+y=215x-15y=45
16y = -24 y = -1.5
5x -1.5 =215x=22.5x=4.5

Answered by Caitlin M. • Maths tutor

2802 Views

Describe the role of blood vessels in the control of body temperature.

Control of body temperature is called thermoregulation. One mechanism for thermoregulation is the control of blood vessels in the skin to either increase or decrease heat loss.If body temperature is too h...

Answered by Eleanor F. • Biology tutor

11152 Views

Gemma wants to buy an equal number of pencils and rulers. Find how many of each she is able to purchase with £5. Use the price list below.

Price list:Pencils - 10p Rulers - 30pWe know Gemma would like to buy an equal number of pencils and rulers. Therefore we can call this a 1:1 ratio. Using the price list we can see that 1 ruler and 1 penci...

Answered by Talha M. • Maths tutor

3237 Views