Top answers

Factorise 6x^2 - 13x + 6

(3x-6)(2x-1)
SG
Answered by Sophie G. • Maths tutor
4438 Views

A rectangle has an area of 20 cm2. Its length and width are enlarged by scale factor 3. Find the area of the enlarged rectangle.

Firstly, look at the given area of the rectangle. As this is 20cm 2 , the length and width of the rectangle could be a combination of 20 and 1; 10 and 2 or 5 and 4. Any of thse options could be used to solve...
AP
Answered by Abhiraj P. • Maths tutor
14147 Views

The area of the cross section of a prism is 30 cm2 . The length of the prism is 25 cm. Work out the volume of the prism.

If the cross section is 30cm 2 , then we need to multiply the cross section by the length of the prism therefore, it should be 30x25, which is 750cm 2
KZ
Answered by Kevin Z. • Maths tutor
14602 Views

ABC are points on a circle, centre O. AO=9cm, OC=9cm and AC=15cm. Find the angle ABC.

Diagrams would be used to help visualise the answer. To find the angle OAC, the cosine rule needs to be used: cosA = (b 2 + c 2 - a 2 )/2bc. Therefore, looking at the diagram, (15 2 + 9 2 - 9 2 )/2x15x9 = co...
IP
Answered by Imogen P. • Maths tutor
4443 Views

What do I do when quadratic equations aren't written in the standard format ax^2 + bx + c = 0 ?

This isn't a trick so much as a way to let you show you can think for yourself. You might be thrown off initially if a quadratic equation is in a format that you don't recognise, but usually all it takes is ...
HK
Answered by Helena K. • Maths tutor
5099 Views