EASY 100 Create a memory device to help you remember the quadratic formula. The device could be a song, drawing, rhyme, mnemonic device, or anything else you can think of that would be useful to you.

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site