1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nata0808 [166]
3 years ago
15

A grocery store estimates that customers arrive at the rate of 15 per hour. The cashier can serve customers at a rate 20 per hou

r. Calculate the average number of customers in a system. Group of answer choices 3 2.33 4 2.25 1 1.25 1.75 2.50 3.50 1.50
Mathematics
1 answer:
IrinaK [193]3 years ago
6 0

Answer:

3 customers

Step-by-step explanation:

Rate of arrival (λ) = 15 per hour

Service rate (μ) = 20 per hour

The number of customers in a system given the arrival rate and the mean service rate is given by:

N = \frac{\lambda}{\mu-\lambda}\\

Applying the given data:

N = \frac{15}{20-5}\\N=3\ customers

The average number of customers in the system is 3 customers.

You might be interested in
Please help with my next question in math.
Vesnalui [34]
The answer is D. 2n + 1
8 0
3 years ago
If x/y + y/x = -1 , ( x unequal y, y unequal 0) then the value of x^2 - y^2 is?
Maurinko [17]

Take your original equation \frac{x}{y} +\frac{y}{x} =-1

and multiply both sides by xy to remove the fractions. You are left with

x^2+y^2=-xy

So, x^2+y^2=-xy

Update: There is no numerical answer that can be found without being given a value for either x or y

3 0
3 years ago
Read 2 more answers
A ramp to a building has a height of 4 feet and the angle of elevation is 33 defrees. How long is the ramp?
sladkih [1.3K]
Height=4 ft
angle=33 degrees
My tip first is to draw it out. Draw an acute angle opening up to a building forming a triangle. Inside of the vertex of the acute angle is the degree 33 and the height of the building is 4 ft. So, use trig! Do you have a calculator? Opposite over hypotenuse is Sine. (SOH CAH TOA). (4)/(sin(33)). which equals 7.34 ft as your height! Hope this helped!
5 0
2 years ago
Find the principle fourth root of -81, checking your answer by raising to the 4th power. If there are "no real roots," then type
kondaur [170]

Answer:

None

Step-by-step explanation:

There are actually 2 answers, 3 and -3. Although if you put it in a calculator, it would show "math error" or undefined. That's because the index is even (4) and the radicand is negative (-81)

4 0
3 years ago
Click on the solution set below until the correct one is displayed.
Snowcat [4.5K]

Answer: Second Option

(Point in Quadrant I)

Step-by-step explanation:

The solution to a system of linear equations is the point where the two lines intersect.

Note that in this case we have two lines with different slope . By definition, if two lines have different slopes and are contained in the same plane, then there will always be an intersection between them at some point in the plane.

Looking at the image, you can see that the lines get closer as x and y increase. Then they will intercept in the first quadrant.

8 0
3 years ago
Other questions:
  • If 15 basketballs weigh 75 ounces, how many basketballs weigh 15 ounces?
    12·2 answers
  • Which of the following is the inverse of y=3^x?
    11·2 answers
  • Can someone help me with 1-4
    12·1 answer
  • You are returning from a trip to England with €100 euro. The exchange rate is USD/EUR 1.3847 . How much in US dollars should you
    13·1 answer
  • 11×+2-4x-x-2<br>16-13x+24-39​
    14·1 answer
  • A ball is thrown into the air with an upward velocity of 80 feet per second. The function
    15·2 answers
  • Is (the fraction in the photo) rational or irrational?
    12·1 answer
  • Solve for x in each of the following equations.
    15·2 answers
  • Write 10 1/4 as an improper fraction
    8·1 answer
  • Mom is planting a rose garden in the backyard. The scale drawing shows the garden. What is the
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!