| How are frequency polygons drawn? | Frequency polygons are drawn by plotting given frequencies on a graph, then drawing a line of best fit from each frequency |
| What do you do to factorise an equation? | To factorise an equation find two numbers that can be added together to make the first number in the equation, that can also be multiplied to make the second number |
| What is the equation for interior and exterior angles? | Interior angles = 180 (n-2), when n = number of sides
And the equation for exterior angles is 360/n, where n = number of sides, and all exterior angles = 360 |
| What are the laws of indices? | 1^2 x 1^5 – same base – add
1^2 / 1^5 – same base – subtract
(2x^5) 4 – integer inside also multiply by Indice
3^2 x 2^-5 = 6^-3 – multiply then add |
| How do you express 8^k x 3^3k, as a power of 6? | Because 8^k and 3^3k do not share the same integer they must be changed to share the integer
make them both either X^k or X^3k
And because 8 = 2^3, 8^k becomes 2^3k x 3^3k
Now because they have the same integer they can be multiplied and = 6^3k – a power of 6 |
| If the compound interest per annum is 5% what do you multiply the input by? | If the compound interest per annum is 5% multiply the input by 1.05 because 100% = 5% = 105% |
