4. Social Security numbers are in the form ###-##-, where each symbol represents a number 0 through 9. How many Social Security numbers are possible using this format?

10^9 = 1,000,000,000 possibilities

Step-by-step explanation:

Technically, it would be 999,999,999 because nobody can be 000-00-0000, but for the sake of your assignment, it is 1 billion. Hope this helped!

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

a

step-by-step explanation: