Top answers

Expand (x+3)(x+1).

The Ancient Greeks perceived a much stronger relationship between Algebra and Geometry than we do today and because of that they often utilised Geometry to help think about, and solve, certain algebraic ques...
DC
Answered by Daniel C. • Maths tutor
4339 Views

You have a list of numbers: 1, 45, 81, 40, 7, 8, 14, 23, 7, 4. Calculate the mode, median, and mean.

Mode is the value that occurs most - which is 7. Median - put numbers in numerical order and find the middle number, which is 11. Mean is the average value so add up all the numbers and divide by the total a...
IC
Answered by Isabelle C. • Maths tutor
3886 Views

You have a bag of 60 coloured marbles. 1/10 are red, 3/5 are blue, and the rest are green. How many green ones are there?

1/10 * 60=6 red marbles 3/5 * 60=36 blue marbles Therefore the amount of green marbles must be 60-(6+36)=18
IC
Answered by Isabelle C. • Maths tutor
4689 Views

When using trigonometry to calculate side lengths/angles, how do you know which identity to use?

Choosing whether to use sin, cos or tan is what will gain you the majority of marks for a trig question. Firstly, you should label the three sides of the triangle as hypothenuse, adjacent and opposite. In a ...
RP
Answered by Rimka P. • Maths tutor
3636 Views

A cone has a radius of 2 units and a height of 3 units. Devise a simplified equation to find the volume of the cone.

Vol = 1/3 pi r^2 h r = 2n h = 3n Therefore Vol = 1/3.pi.(2n)^2.3n Vol = 1/3.pi.12n^3 Vol = 4.pi.n^3
TM
Answered by Toby M. • Maths tutor
3403 Views