18 points Help please I’ve a got a test tomorrow and I have not revised so please some one help... if you have answered it please can you stay to help the rest

x = (-b±(√b²-4ac))/2a

Step-by-step explanation:

Here's a mnemonic I use to remember the quadratic formula:

The bad (negative) boy was deciding (plus or minus) whether to go to a radical (radical) party or be squared (b²) and miss out (minus) on four awesome chicks<-- don't really like that word, I use creatures lol (4ac) and the party was over at 2 AM (all over 2a).

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1