Answer:
3x-4y=-9
Step-by-step explanation:
Answer:
13 customers use to text,
10 customers use the Internet,
the probability that a randomly selected customer who is on plan B uses the phone most often to text is
Step-by-step explanation:
A phone company surveys a sample of current customers to determine if they use their phones most often to text or use the Internet.
Plan B:
13 customers use to text,
10 customers use the Internet,
23 customers in total.
The probability that a randomly selected customer who is on plan B uses the phone most often to text is
Answer:
Step-by-step explanation:
Part (a) the probability that two people have a birthday on the 9th of any month.
Neglecting leap year, there are 365 days in a year.
There are 12 possible 9th in months that make a year calendar.
If two people have birthday on 9th; P(1st person) and P(2nd person).
Part (b) the probability that two people have a birthday on the same day of the same month
P(2 people selected have birthday on the same day of same month) + P(2 people selected not having birthday on same day of same month) = 1
P(2 people selected not having birthday on same day of same month):
P(2 people selected have birthday on the same day of same month)
Answer:
-3x+6
Step-by-step explanation:
Again, you multiply -3 times x and you get -3x, then you multiply -3 times -6 and since you are multiplying two negative numbers the result becomes positive so you get +6. Result = -3x+6