Convert 1/9 into a decimal

The value √10 and √15 are plotted on the number line

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Find the value of the variable and the length of each secant segment.