1930isainunez
26.08.2021 •
Mathematics
A telephone company is assigned a new area code and can issue new 7-digit phone numbers. The first number cannot be 0 or 1. There are no
restrictions on the remaining 6 numbers.
a. How many possible phone numbers can be issued?
b. Find the probability of being assigned the phone number 867-5309.
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Ответ:
6 + x^2
Step-by-step explanation:
Plug in the values for A and B.
(-x + 2x - x + 1) + (x^2 + 5)
Remove the parenthesis. Combine like terms.
-2x + 2x = 0
1 + x^2 + 5
Combine like terms again.
6 + x^2