If v=-1, x=-2 and y= 3, find the value of: 3v + 2x

Listed below are prices in dollars for one night at different hotels in a certain region. Find the range, variance, and standar

Artyom0805 [142]

Answer:

Range = 115$

Standard Deviation = 43.76$

Variance = 1915.142$

Option A) The measures of variation are not very useful because when searching for a room, low prices, location, and good accommodations are more important than the amount of variation in the area.

Step-by-step explanation:

We are given the data for prices in dollars for one night at different hotels in a certain region.

234, 160, 119, 131, 218, 207, 146, 141

Range:

Sorted data: 119, 131, 141, 146, 160, 207, 218, 234

$\text{Range} = 234-119 = 115\$$

Standard Deviation:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{1356}{8} = 169.5$

Sum of squares of differences = 4160.25 + 90.25 + 2550.25 + 1482.25 + 2352.25 + 1406.25 + 552.25 + 812.25 = 13406

$\sigma = \sqrt{\dfrac{13406}{7}} = 43.76\$$

Variance =

$\sigma^2 = 1915.142\$$

Measure of variance for someone searching for room:

Option A) The measures of variation are not very useful because when searching for a room, low prices, location, and good accommodations are more important than the amount of variation in the area.

5 0

3 years ago

A parachutist's rate during a free fall reaches 45 meters per second. What is this rate in feet per second? At this rate, how ma

Alina [70]

198 feet..........1 meter
------------- X-------------- 
1 second.......3.3 feet 

198 
----- meters per second 
3.3 

60 meters per second.......ANSWER 

60 m/sec X 15 sec = 900 feet.......ANSWER 

If you have questions on this or any other math problem feel free 
to let me know how to contact you.......Read Below....... 

I tutor free online since moving to France from Florida in June 2011. 
I still tutor by skype to students in Florida and starting to gain more world-wide. 
Hope this is most helpful and you will continue to allow me to tutor you. 
If you dont fully understand or have a question PLEASE let me know 
how to contact you so you can then contact me directly with any math questions. 
If you need me for future tutoring I am not allowed to give out my 
info but what you tell me on ***how to contact you*** is up to you 
Been a pleasure to serve you Please call again 
Robert Jones.............f 
"Teacher/Tutor of Fine Students" 
A PRESENT FOR YOU 
Ask someone to write a number, say a five-digit number. 
(Can be a 2-digit.....3-digit.....4-digit....ect..... 
Suppose the number written is 
57836 
Now, without showing the asker, you write a number on 
a sheet of paper and keep it folded. You have to write the 
number by subtracting 2 from the above number and 
adding 2 in front which will be.... 
257834 
Next, ask the person to write another five-digit number 
below his original number. Suppose he writes 37589. 
So you now have... 
57836 
37589 
Now you write a five-digit number below it in such a 
way that each digit is 9 minus digit above. You now have... 
57836 
37589 
62410 
Ask the person to add one more 5-digit number. If he 
adds 54732, you add below it 45267. Note that you decided 
the number by subtracting each of his digit from 9. 
Thus, you now have..... 
57836 
37589 
62410 
54732 
45267 
Next, ask him to add all the number and he gets 257834 
Show him the number which you had written as an answer 
to this addition earlier in the folded paper and surprise him.

8 0

3 years ago

A total of 123 fifth-grade students are going to ford Verde state historic park each bus holds 38 students all of the buses are

FromTheMoon [43]

Hi Lala4eva54,

Your Question:

A total of 123 fifth-grade students are going to ford Verde state historic park each bus holds 38 students all of the buses are full Except one how many students will be in the bus that is not feel.

Solution:

123 / 38 = 3.236.....

38 x 3 = 114

123 - 114 = 9

Answer:

There will be 9 students in the bus thats not full.

4 0

3 years ago

Jenna calculated several numbers in her calculator.The results display-1.7E-4 on the calculator screen. Which equipment number(s

maw [93]

Answer:

A) -1.7 x 10^-4 D)-0.00017

Step-by-step explanation:

Since its negative in the base B and C wont work. The negative in the exponent means the decimal moves left which exclude E.

5 0

3 years ago

Do in five minutes please help me out I will give you points if you help me out thank you

Margaret [11]

Answer:

sorry dude no clue

Step-by-step explanation:

8 0

3 years ago