All categories

3 years ago

Help me now please hurry. inna rush

Mathematics

2 answers:

ludmilkaskok [199]3 years ago

7 0

A
explanation - i did this

Inessa05 [86]3 years ago

3 0

Answer:

Step-by-step explanation:

You might be interested in

To find the value of an algebraic expression is what?

Mashutka [201]

Algebraic expression means Letter Can stand for numbers. Ex: 2y+5 and Y=10

6 0

3 years ago

Mia wants to rent a paddleboat in Forest Park. The boathouse charges a 7$ fee, plus an hourly rate of 6$. For how long did Mia r

Aneli [31]

Answer:

6 hours.

Step-by-step explanation:

since the boat house charges 7 dollars we can subtract that from 43

43-7=36

since we have 36 left and the fee per hour is 6 we can devide

36÷6=6

6 0

3 years ago

Find the cosine of angle A (written as a fraction)

Jet001 [13]

Answer: 0.92

Step-by-step explanation: cos a = side adj / hypotenuse

Cos a = 12/13 ~ 0.92307

7 0

3 years ago

Write an equation in slope-intercept form for the line with slope 3/4 and y-intercept −4.

Sati [7]

Y=3/4x-4 have a good day

6 0

2 years ago

The manager of a fast-food restaurant determines that the average time that her customers wait for service is 3.5 minutes.The ma

Lana71 [14]

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:

$f(x) = \mu e^{-\mu x}$

In which $\mu = \frac{1}{m}$ is the decay parameter.

The probability that x is lower or equal to a is given by:

$P(X \leq x) = \int\limits^a_0 {f(x)} \, dx$

Which has the following solution:

$P(X \leq x) = 1 - e^{-\mu x}$

The probability of finding a value higher than x is:

$P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}$

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 $m = 3.5, \mu = \frac{1}{3.5} = 0.2857$

What number of minutes should the advertisement use?

The values of x for which:

$P(X > x) = 0.01$

$e^{-\mu x} = 0.01$

$e^{-0.2857x} = 0.01$

$\ln{e^{-0.2857x}} = \ln{0.01}$

$-0.2857x = \ln{0.01}$

$x = -\frac{\ln{0.01}}{0.2857}$

$x = 16.12$

Rounding to the nearest number, the advertisement should use 16 minutes.

5 0

3 years ago