Top answers

Maths
GCSE

An object's displacement, s metres, from a fixed point after t seconds is s=5t^3+t^2. Find expressions for the object's velocity and acceleration at time t seconds.

Differentiating gives the rate of change and velocity and acceleration are rates of change. Velocity is the rate of change of displacement compared to time and acceleration is the rate of change of veloci...

Answered by Seeitha S. Maths tutor
3017 Views

In a sale, an item originally worth £140 is reduced by 15%. What is the new price of the item ?

100-15=85 85/100 x 140 = 11900/100 = £ 119

Answered by Harri S. Maths tutor
2569 Views

(2x+3)^2

=4x^2+12x+9

Answered by Mohammed A. Maths tutor
2511 Views

Express 5/(2-sqrt(3)) in the form a + b*sqrt(3)

The first step that needs to be taken is to get rid of the square root from the denominator. This can be done by multiplying the top and bottom of the fraction by 2 + sqrt(3). This gives (10 + 5sqrt(3...

Answered by Guy V. Maths tutor
9841 Views

Make x the subject of the following formula: 2x-4=2y.

To answer this question we must rearrange the equation to isolate y.Firstly, add 4 to each side, giving 2x=2y+4; Finally, divide both sides by 2 giving x=(2y+4)/2.

Answered by Simbarashe S. Maths tutor
3517 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences