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
Ad libitum [116K]
3 years ago
10

Grace is looking at a report of her monthly cell-phone usage for the last year to determine if she needs to upgrade her plan. Th

e list represents the approximate number of megabytes of data Grace used each month.
700, 735, 680, 890, 755, 740, 670, 785, 805, 1050, 820, 750
What is the standard deviation of the data? Round to the nearest whole number.
Mathematics
1 answer:
Valentin [98]3 years ago
6 0

Answer:

Step-by-step explanation: Round to the nearest whole number. In order to find the standard deviation, we first have to calculate the mean (average) of the numbers. To get this we add all the numbers together and then divide by 12 since there are 12 numbers. The mean = 782. Next, we take each number and subtract the mean, taking the result and squaring it.

You might be interested in
Synonym for precious
NikAS [45]

Answer:

important, valuable, nice,

4 0
3 years ago
Read 2 more answers
Two workers finished a job in 12 days. How long would it take each worker to do the job by himself if one of the workers needs 1
Lorico [155]

Two workers finished a job in 7.5 days.

How long would it take each worker to do the job by himself if one of the workers needs 8 more days to finish the job than the other worker?

let t = time required by one worker to complete the job alone

then

(t+8) = time required by the other worker (shirker)

let the completed job = 1

A typical shared work equation

7.5%2Ft + 7.5%2F%28%28t%2B8%29%29 = 1

multiply by t(t+8), cancel the denominators, and you have

7.5(t+8) + 7.5t = t(t+8)

7.5t + 60 + 7.5t = t^2 + 8t

15t + 60 = t^2 + 8t

form a quadratic equation on the right

0 = t^2 + 8t - 15t - 60

t^2 - 7t - 60 = 0

Factor easily to

(t-12) (t+5) = 0

the positive solution is all we want here

t = 12 days, the first guy working alone

then

the shirker would struggle thru the job in 20 days.

8 0
2 years ago
Read 2 more answers
it cost 270 for 3 people to go on a fishing trip how much does it cost for 10 people to go on the fishing trip
sdas [7]
270 divided by 3 = 90.

90  is the cost per person.

Now you do 90 times 10 to get the total for all 10  people.

90 times 10= 900.
3 0
2 years ago
Read 2 more answers
Simplify 3+4p to the second power -5p - 3p to the second power + 4p - 8
tatuchka [14]
It is 26 I have worked it out 278 times and it is 100% correct
8 0
3 years ago
Z-scoreAn organization collects information on the production and consumption of food and agriculture products for 200 countries
kati45 [8]
Rjjnfekkkkkkkkkkkkkkfvcmemsclcvmrnvv
5 0
3 years ago
Other questions:
  • The briarwood middle school chess club has 55 members. 22 of the members are in seventh grade. What percent of the members of th
    13·1 answer
  • Susan throws a softball upward into the air at a speed of 32 feet per second from a 24 dash foot platform. the distance upward t
    10·1 answer
  • Evaluate k to the 6th power times p to the -7 power when k is 2 and p is -1
    9·1 answer
  • Gt-m=8k solve for t how do I solve for t?
    12·1 answer
  • Find the edge length of the cube
    13·1 answer
  • Please help I’ll give brainliest
    10·2 answers
  • I can't figure it out​
    15·1 answer
  • Brian agrees to watch his neighbor’s dogs for 7 days. His neighbor provides a 128 ounce bag of dog food. Buster eats 20.5 ounces
    10·1 answer
  • Please help me i love u so much
    12·1 answer
  • Anyone know the awnser to this?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!