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]
2 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]2 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
Select the correct order for the following numbers
Andru [333]

Answer:

cdab

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Solve the equation x2-16x+54=0
kari74 [83]

Answer:

x1 = 8+√10, x2 = 8 -√10

Step-by-step explanation:

x² - 16x + 54 = 0

x = \frac{-b +/-\sqrt{b^{2} -4ac} }{2a} \\x = \frac{-(-16)+/-\sqrt{(-16)^{2} -4*1*54} }{2*1} \\\\\\x = \frac{16+/-\sqrt{(40)} }{2*1} = 8+/-\sqrt{10} \\\\x_{1} = 8+\sqrt{10}\\\\x_{2} =8-\sqrt{10}

7 0
2 years ago
Read 2 more answers
Can someone pls help me with this !
Vadim26 [7]

Using a line of best fit, the predicted tsunami speed for the following depths is given by:

a. 1151 km/h.

b. 572 km/h.

c. 130 km/h.

d. 122 km/h.

<h3>How to find the equation of linear regression using a calculator?</h3>

To find the equation, we need to insert the points (x,y) in the calculator.

For this problem, the points (depth, velocity) are given by:

(7000, 943), (4000, 713), (2000, 504), (200, 159), (50, 79), (10,36)

Inserting these points in the calculator, the velocity in function of the depth is:

v(d) = 0.12879d + 121.03448

Hence, the velocities are given as follows:

a. v(8000) = 0.12879 x 8000 + 121.03448 = 1151 km/h.

b. v(3500) = 0.12879 x 3500 + 121.03448 = 572 km/h.

c. v(70) = 0.12879 x 70 + 121.03448 = 130 km/h.

d. v(5) = 0.12879 x 5 + 121.03448 = 122 km/h.

More can be learned about a line of best fit at brainly.com/question/13203683

#SPJ1

8 0
1 year ago
A sequence is defined by the following: an = 4n – 1 What is a1?
Alexandra [31]

an = 4n – 1

a1  means n=1

a1 = 4(1) -1

a1 = 4-1

a1 =3

Answer: 3

6 0
3 years ago
Read 2 more answers
Can someone help me and not be a troll.... I’ll reward points + brainalist
babymother [125]

Answer:

The answer is 69.5

Step-by-step explanation:

First u wanna find the area of the rectangle and since it already gives you the the height and width you want to multiply them together 13×4= 52

meanwhile triangle is 5ft tall and the base is 7ft

using the formula to solve for area of a triangle you would multiply height and base and divide by 2

you should end up with 17.5 then u add that to 52 and get 69.5 ♡ Hope this helps.

4 0
2 years ago
Other questions:
  • Maureen spent sh 207 to buy 7 exercise books and 4 pens while Sharon spent sh 165 to buy 5 exercise books and 5 pens of same typ
    10·1 answer
  • 1.7 meters to millimeters_____m =
    15·2 answers
  • The number 6 is a member of which four groups of real numbers?
    9·1 answer
  • A garden is 5 yards 12 inches wide and 2 yards long. Write the ratio of the width to the length as a fraction in simplest form.
    15·1 answer
  • URGENT
    11·1 answer
  • PLEASE PLEASE HELP WILL GIVE BRAINLIEST TO CORRECT ANSWER
    12·1 answer
  • -5x+2y=6<br> -x+2y=-2 <br> what is the solution to the system of equations?
    15·1 answer
  • Please help! Will mark Branliest!
    6·2 answers
  • A system of equations is shown on the graph below.how many solutions does this system have
    14·1 answer
  • The perimeter of rectangle field is 160m than find the area of field if its breath is 20m
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!