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2 years ago

If x^-2/3 = 1/36, then what does x equal?

Mathematics

1 answer:

Deffense [45]2 years ago

6 0

Answer:

i guess it is 1/6

Step-by-step explanation:

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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:

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

which is equal to 0.01

Solve the equation for x

$\int\limits^{\infty}_x {0.4e^{-0.4t}} \, dt =0.01\\\\\frac{0.4e^{-0.4t}}{-0.4}=0.01\\\\-e^{-0.4t} |^\infty_x =0.01\\\\e^{-0.4x}=0.01$

Take natural log on both sides

$ln (e^{-0.4x})=ln(0.01)\\-0.4x=ln(0.01)\\-0.4x=-4.61\\x= 11.53$

<h3>Results</h3>

The costumer has to wait x = 11.53 mins ≅ 12 mins to get a free hamburger

3 0

2 years ago

What statements must be true of an equation before you can use quadratic formula?

Alexus [3.1K]

Before you use the quadratic formula, you have to make sure the equation itself is a quadratic and that a and b are not 0.

3 0

3 years ago

(20 points)

vladimir1956 [14]

Answer:

Step-by-step explanation:

Slope is the same(x) therefore they are parallel

3 0

3 years ago

Will give you brianlist

In-s [12.5K]

Answer:

-50x - 66

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Olive estimated it will take about 50 gallons of gas for the whole trip. Use the he equation to determine how much we will spend

Westkost [7]

Answer:

$175

Step-by-step explanation:

3.5 x 50 = $175

8 0

3 years ago