jeblockhead3oy2swt jeblockhead3oy2swt 15-11-2017 Mathematics contestada The sum of a number and 20 is no more than the sum of the square of the number and 9. Which of the following inequalities can be used to determine this unknown number? a.x + 20 ≤ x2 + 9 b.x + 20 < x2 + 92 c.x + 20 < (x + 9)2 d.x + 20 ≤ (x + 9)2