What is x2 -6x-23=0 using square roots

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

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?