Top answers

How do you solve linear inequalities such as: 5x – 2 > 3x + 11

Firstly, I would ask the student if they knew what the first step was. If they did not know, I would suggest that they need to get all the x's on one side of the equation and all the numbers on one side. I w...
MZ
Answered by Max Z. • Maths tutor
4622 Views

find dy/dx where y = a^x

First, we need to re-write it as e to the power something. The definition of log base e is that e^log(y) = y. We can put our expression into this equality too. So a^x = e^log(a^x), so we use log rules to bri...
AS
Answered by Alastair S. • Maths tutor
3647 Views

Derive the quadratic equation.

So in order to derive the quadratic equation we need to start with a quadratic that can represent any quadratic equation. Lets start with ax 2 +bx+c=0. We will use the completing the square method to solve t...
HT
Answered by Harry T. • Maths tutor
4059 Views

Bhavin, Max and Imran share 6000 rupees in the ratios 2 : 3 : 7 Imran then gives 3/5 of his share of the money to Bhavin. What percentage of the 6000 rupees does Bhavin now have? Give your answer correct to the nearest whole number.

each share is 6000 / 12 - Imran's share is 7x this = 3500 rupees. 3500 x 3 / 5 = 2100. 2100/6000 x 100 = 35%
JK
Answered by Jack K. • Maths tutor
9009 Views

How do you solve the quadratic equation x^2+7x+12=0

To solve quadratic equations we first need to factorise the equation into brackets. We can do this by looking at the numbers in the quadratic equation. The only number that isn't an x coefficient is the 12, ...
CD
Answered by Charlie D. • Maths tutor
11004 Views