Answer:
A rational number is a number that can be written as a ratio of two integers a and b, where b is not zero. For example, 4/7 is a rational number, as is 0.37 because it can be written as the fraction.
Step-by-step explanation:
Answer:
The advertisement should use 16 minutes.
Step-by-step explanation:
Exponential distribution:
The exponential probability distribution, with mean m, is described by the following equation:

In which
is the decay parameter.
The probability that x is lower or equal to a is given by:

Which has the following solution:

The probability of finding a value higher than x is:

The manager of a fast-food restaurant determines that the average time that her customers wait for service is 3.5 minutes.
This means that 
What number of minutes should the advertisement use?
The values of x for which:

So






Rounding to the nearest number, the advertisement should use 16 minutes.
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Answer:
1.25+√3 or 2.9821 to the nearest ten thousandth.
Step-by-step explanation:
sin 60 = √3/2, tan 45 = 1 and cos^2 60 = (1/2)^2 = 1/4
So we get 2 *√3/2 + 1 + 1/4
= √3 + 1.25
The square root of 12 is 3.4641 so 3.6 would be greater than 3.4641