Top answers

John ran a 450m race (2sf) in a time of 62 seconds (nearest second). Calculate the difference between his maximum and minimum average speed. (3sf)

S=D/T Max= 455(upper bound)/61.5(lower bound)= 910/123 m/s Min= 445(lower bound)/62.5 (upper bound) = 178/25 m/s Max - Min= 856/3075 m/s
CR
Answered by Christopher R. • Maths tutor
4395 Views

x is inversely proportional to P. When P = 6, x =2. What does x = when P = 4?

We know x is inversely proportional to P, so immediately we know their relationship is of the form x = k/P , where k is a constant. We are also given some conditions we can use to solve for k: when x = 2, P ...
AS
Answered by Alec S. • Maths tutor
4102 Views

How should I structure my essays?

When writing essays you should always think PEEL. One of the most frequent and very avoidable mistakes is not actually answering the question that has been asked; the PEEL structure will ensure you avoid thi...
AO
Answered by Adele O. • English tutor
2992 Views

How do you simplify (3x-3)/(x-1)?

The important thing here is to try and find the bottom bracket in the top bracket ie the numerator Notice that (3x-3) can be divided by 3 and therefore (3x-3) can be written as 3 multiplied by (x-1) Notice t...
LO
Answered by Liam O. • Maths tutor
9355 Views

Solve the inequality 2x - 10 < 6 - 2x

First, we can temporarily make this an equation rather than an inequality to make it easier to solve. We replace the “&lt;” with an equals sign “=”. The inequality now becomes an equality: 2x - 10 = 6 - 2x. ...
CW
Answered by Charlotte W. • Maths tutor
8605 Views