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
xz_007 [3.2K]
3 years ago
6

A department​ store, on​ average, has daily sales of ​$28 comma 286.28. The standard deviation of sales is ​$1 comma 500. On​ Tu

esday, the store sold $ 34 comma 924.62 worth of goods. Find​ Tuesday's z score. Was Tuesday an unusually good​ day? Round results to the nearest hundredth.
Mathematics
1 answer:
wolverine [178]3 years ago
3 0

Answer:

z-score = 4.43,

It is a Good day

Step-by-step explanation:

The provided information is:

Mean = $28,286.28

Standard deviation = $1,500

Let x be the sell of department store on Tuesday.

Then, x = $34,924.62

The z-score is define as:

z=\dfrac{x-\mu}{\sigma}\\\\=\dfrac{34924.62-28286.28}{1500}\\\\=4.43      

Thus, the Tuesday's z-score is 4.43. So this is usually good day.

You might be interested in
What's the ratio in simplest form 60 to 30​
Nikitich [7]

Answer:

2:1

Step-by-step explanation:

because 60 split in half is 30

and 30 split in half is 15

then if you divide both numbers by 5 then you get 6:3

6:3 is equivalent to 2:1

sorry im a little late, hope this helped though.

4 0
3 years ago
The length of a rectangle is eight feet more than its width. The area of the rectangle is six hundred nine square feet. What are
vodomira [7]
You can write two equations using the given information:
.. L = W +8
.. L * W = 609
Using substitution, you get a quadratic.
.. (W +8) * W = 609
.. W^2 +8W -609 = 0
Not surprisingly, you're looking for factors of 609 that differ by 8.
.. 609 = 1*609 = 3*203 = 7*87 = 21*29
The last two are the factors of interest.
.. (W +29)(W -21) = 0

The width of the rectangle is 21 feet, the length is 29 feet.

_____
Sometimes it is easier to work with the average dimension. Here, let that be x. Then you have
.. (x +4)(x -4) = 609
.. x^2 -16 = 609
.. x^2 = 625 = 25^2 . . . . . . . one of your memorized math facts
So, the dimensions are
.. 25 +4 = 29 by 25 -4 = 21, that is, 29 ft by 21 ft.
5 0
3 years ago
Markuo spends $27 on some plants. Each plant costs $9. How many plants does he buy?
kicyunya [14]

Answer:

He can buy 3 plants

Step-by-step explanation:

$27 is the total amount of money he can spend, if each plant costs $9 the equation would be like this:

9x = 27

Divide 27 by 9 because division is the opposite operation to multiplication

x = 3

6 0
3 years ago
Pls help i will award brainliest!!!!!!
Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

2x - x  ,

3- x , 12 = G (x+9, 7)

-3

x , 12. = G (x 9

                    -3 = 6

x,12 = G (x+6 , 7)

   -6.           -6

x , 6 = x, 7

F(6) G(7) - i believe

7 0
3 years ago
Read 2 more answers
Write 18/4 as a mixed number in simplest form
otez555 [7]

Answer:

4 1/2

Hope this helps

6 0
3 years ago
Other questions:
  • Help me with this ;-;
    10·1 answer
  • A conference room can seat a maximum of 85 people. The Principal and two counselors need to meet with the school's juniors to di
    7·1 answer
  • A cone has a diameter of 12 ft and a slant height of 20 ft. Explain whether tripling both dimensions would triple the surface ar
    12·1 answer
  • I need to know how to divide 6 into 5
    15·1 answer
  • At a health club, 60% of the members are men and 40% of the members are women. The average age of the men is 32 years. The avera
    12·1 answer
  • PLS SHOW YOUR REASONING ASAP
    15·1 answer
  • The ratio of the number of tests Jed passed this year to the number of tests he failed is 13:3. What percent of all tests Jed to
    5·2 answers
  • 200x - y + 500= 0<br><br>Put it in Y=mx + b form<br><br><br><br>​
    9·1 answer
  • The dot plots compare the number of raffle tickets sold by boys and girls during a school fundraiser which plot has an outlier
    5·1 answer
  • Is the function even, odd or neither?<br> y=x^2-2x-8
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!