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
ddd [48]
3 years ago
6

An online store receives customer satisfaction ratings between 000 and 100100100, inclusive. In the first 101010 ratings the sto

re received, the average (arithmetic mean) of the ratings was 757575. What is the least value the store can receive for the 111111th rating and still be able to have an average of at least 858585 for the first 202020 ratings
Mathematics
1 answer:
Monica [59]3 years ago
7 0

Complete question is;

An online store receives customer satisfaction ratings between 0 and 100, inclusive. In the first 10 ratings the store received, the average (arithmetic mean) of the ratings was 75. What is the least value the store can receive for the 11th rating and still be able to have an average of at least 85 for the first 20 ratings?

Answer:

50

Step-by-step explanation:

We are told that In the first 10 ratings the store received arithmetic mean of the ratings = 75.

Thus;

Sum of the first 10 ratings = 75 × 10 = 750

Now, for the mean of the first 20 ratings to be at least 85, it means that the sum of the first 20 ratings would be; 85 × 20 = 1700

Thus, the sum of the next 10 ratings would be; 1700 − 750 = 950.

If maximum rating = 100, then the maximum possible value of the sum of the 12th to 20th ratings is given by;

9 × 100 = 900.

Now, in order to make the store have an average of at least 85 for the first 20 ratings, the least value for the 11th rating is;

950 − 900 = 50

You might be interested in
What is the equation of the line parallel to the given line with an X intercept of 4
mixas84 [53]

You haven't shared the given line, so all I can do here is to invent a line and then show you how to write the equation of a new line which is parallel to mine and which has an x-intercept of 4.


My invented line: y = (2/3)x + 3


The new line MUST have the same slope: m = 2/3.


Then y = mx + b becomes y = (2/3)x + b. Find the x-intercept by setting y = 0 and solving for x: (2/3)x = 0 - b. Now replace x with 4 and find b:


-b = (2/3)(4) = 8/3. Then b = -8/3, and the new line is


y = (2/3)x - 8/3.

3 0
3 years ago
Read 2 more answers
Find the surface area of the shape below.
almond37 [142]

Answer:

54m^2

Step-by-step explanation:

Each square has a equal sides, which is 3m

in order to find the surface area, it's

Formula : Base x height = Area

The total surface area would be all the area's added together

3x3=9cm^2

so each square is 9m^2

there are 6 squares so

9+9+9+9+9+9=54m^2

or you can do 9x6=54m^2

8 0
3 years ago
Plz help me with this!!!!!!!!
LenaWriter [7]

Answer:  √y  

<u>Step-by-step explanation:</u>

\sqrt[6]{y^3}=y^{\frac{3}{6}}=y^{\frac{1}{2}}=\boxed{\sqrt y}

4 0
3 years ago
Can someone help for this question just this man​
Mnenie [13.5K]

Answer:

141°

Step-by-step explanation:

It's an octagon so the Sum of interior angles is: (8-2)×180=1080

5x+133+16+126+162-12+30=5x+455=1080

5x=625

x=125

x+16=141

4 0
2 years ago
Read 2 more answers
Renee spent 1/8 of the day landscaping around the house. She spent half of the time pulling weeds. What fraction of the day did
Inga [223]

Answer:

The fraction of the day Rehee spent pulling weeds = 1/16

Step-by-step explanation:

Let us take the fraction representing a whole day to be a whole number - 1

Renee spent 1/8 of the day landscaping around the house.

This means she spent 1/8 X 1 landscaping around the house = 1/8

She spent half of the time pulling weeds.

This means she spent 1/2 of 1/8 of  1 landscaping around the house = 1/16

1/2 X 1/8 X 1 = 1/16

The fraction of the day Rehee spent pulling weeds = 1/16

8 0
3 years ago
Other questions:
  • A 135 degree angle is classified as what
    13·2 answers
  • How do you turn 3/7 to a decimal?
    7·2 answers
  • Suppose that y varies directly with x and y=10 when x=20. What is y when x=15
    11·1 answer
  • what is the surface area of the cylinder? Use 3.14 for pi and round your answer to the nearest hundredth
    7·1 answer
  • Half a number plus sixteen is 22
    5·2 answers
  • Give the domain and range of the following relation:
    12·1 answer
  • Can someone answer this i’ll give u a cookie PLEASE I NEED IT NOW
    14·1 answer
  • Find x.<br> to<br> 150 <br> X =<br> Alternate interior angles
    12·2 answers
  • Find the measure of the unknown segment (x) in each figure. Use theorem of tangent segment and secant segment.​
    10·1 answer
  • = #7 i
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!