Answer:
I figure you could simplify it by multiplying both sides by 6, resulting in -31+23=-30+18-1+5
-8=-8
Step-by-step explanation:
I’m pretty sore it’s c not sure tho
To multiply two fractions together, multiply the numerators of both fractions together and same goes for the denominators.

Simplify.

So, 1/3 is the answer.
Answer:
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Answer:
18 minutes
Step-by-step explanation:
Given that:
The arrival time = 3 customers / hour
The avg. service rate (s) = 12 minutes per customer
To hour, we have:

s = 5 customers/ hour
Thus, the required average time for a customer needs to wait in line is:

To minutes;

= 18 minutes