Top answers

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
8938 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
10841 Views

Find the gradient of y=x^2-6x-16 at the point where the curve crosses the x-axis

So we have y = 0 and therefore x 2 - 6x - 16 =0 This is then factorised to (x+2)(x-8) = 0 and therefore we have x = -2, x = -8 To find the gradient we need to find dy/dx So dy/dx = 2x - 6 Therefore if x = -2...
HK
Answered by Holly K. • Maths tutor
4844 Views

How do I know which trigonometric identity to use in any given situation?

For the most part, this comes down to practice. The insight in seeing which identity gives you the most efficient path to the solution comes with experience, however a little trick I like to use (silly as it...
AT
Answered by Ankush T. • Maths tutor
4070 Views

Find values of y such that: log2(11y–3)–log2(3) –2log2(y) = 1

NB.: Treat all log as log2 for purpose of formatting log(x) - log(z) = log(x/z) alog(b) = log(b^a) log((11y - 3)/3) - log(y^2) = 1 log((11y - 3)/3y^2) = 1 11y - 3 / 3y^2 = 2^1 11y - 3 = 6y^2 6y^2 - 11y + 3 =...
SA
Answered by Shrinivas A. • Maths tutor
6172 Views