3x2 + 24x = 0 for x.

Mathematics

2 answers:

sergeinik [125]3 years ago

8 0

Answer:

the answer would be 0

Step-by-step explanation:

Alla [95]3 years ago

3 0

Answer:

Step-by-step explanation:

Well, if the total is zero, and you are multiplying 3,x,and 2, and multiplying 24 and x, to get zero, wouldn't x just be 0? Because 3 times 0 is 0, 2 times 0 is 0, and 24 times 0 is 0. That would all equal 0. Because you are basically just adding 0 and 0.

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The manager wants to advertise that anybody who isn't served within a certain number of minutes gets a free hamburger. But she d

aksik [14]

Answer:

The number of minutes advertisement should use is found.

x ≅ 12 mins

Step-by-step explanation:

(MISSING PART OF THE QUESTION: AVERAGE WAITING TIME = 2.5 MINUTES)

For such problems, we can use probability density function, in which probability is found out by taking integral of a function across an interval.

Probability Density Function is given by:

$f(t)=\left \{ {{0 ,\-t$

Consider the second function:

$f(t)=\frac{e^{-t/\mu}}{\mu}\\$

Where Average waiting time = μ = 2.5

The function f(t) becomes

$f(t)=0.4e^{-0.4t}$

The manager wants to give free hamburgers to only 1% of her costumers, which means that probability of a costumer getting a free hamburger is 0.01

The probability that a costumer has to wait for more than x minutes is:

$\int\limits^\infty_x {f(t)} \, dt= \int\limits^\infty_x {}0.4e^{-0.4t}dt$