Top answers

Find the intersection coordinates of both axis with the function: f(x)=x^2-3x+4/3

Find the y 1 coordinate, where x 1 = 0, this is the intersection with y-axis. f(0)=4/3, therefore one intersection P y =[0,4/3]Find the x 1,2 coordinates, where y = 0, this are the intersections with x-axis....
MS
Answered by Martin S. • Maths tutor
3322 Views

An isosceles triangle ABC has a perimeter of 16cm. AB = x+3, AC = x+4. Calculate the area of ABC.

Find x.2(x+3) + x+4 = 163x + 10 = 16x = 2So: AB = 5cm, BC = 5cm, AC = 6cmThen use '0.5 x base x height' to find area.Base = 6Height use Pythagoras: 5^2 - 3^2 = x^225 - 9 = 16x = 40.5 x 6 x 4 = 12cm^2
AM
Answered by Amelie M. • Maths tutor
4335 Views

Integrate the natural logarithm of x (ln x) with respect to x

In order to integrate ln x you have to use integration by parts, even though it appears there is only one term to be integrated. We get around this by instead writing it as (ln x)(1), where we treat the 1 as...
AD
Answered by Archie D. • Maths tutor
4214 Views

How many thirds are there in 9?

multiple choice question.answer: 27taken from CGP Sample 11+ Assessment Test
MA
Answered by Mehdi A. • Maths tutor
2881 Views

Solve the following equations showing your method clearly. 3(2x + 9) − 7x = 4(x + 3)

3(2x + 9) − 7x = 4(x + 3)so 6x + 27 -7x = 4x + 12so 27 - 12 = 5xso 15 = 5xso x=5taken from The Haberdashers' Aske's Boys’ SchoolElstree, Herts 13+ Entrance Examination 2016
MA
Answered by Mehdi A. • Maths tutor
3349 Views