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
iren2701 [21]
3 years ago
8

If 20 were added to each of the vlaues in a data set that originally had a standard deviation of 8, the standard deviation of th

e resulting data would be 28
Mathematics
1 answer:
Nitella [24]3 years ago
3 0

Answer:

False (I assume it's a true/false question)

Step-by-step explanation:

Standard deviation measures how spread out the data is.  If you add 8 to all the data values, the distribution of data moves to the right (on a graph) 8 units. The shifted data are no more and no less spread out than before.  The standard deviation does not change.

You might be interested in
It takes 4 hours to drive 240 miles. Select all the other trips that are traveling at the same rate.
kogti [31]

Answer:

60 mph

Step-by-step explanation:

Time:miles

4:240

1:x

To get x divide 240 by 4 because that's what we divided 4 by to get 1

The rate is 60

select all times with the rate of 60 mph

6 0
2 years ago
Which number is the greatest?<br> Select one:<br><br> 10/3<br><br> 7/2<br><br> 9/4<br><br> 17/8
nexus9112 [7]

Answer:

7/2

Step-by-step explanation:

Firstly lets put them all in common denominators (LCM) 3,2,4 and 8 re all divided by 24.

17/8 x 3/3 = 51/24

7/2 x 12/12 = 84/24

9/4 x 6/6=54/24

10/3 x 8/8= 80/24

Now lets see which one is greatest: 7/2 or 84/24

Hope this helps :D

7 0
3 years ago
Read 2 more answers
00:00
lara [203]

Answer:

It will take 39.27 gallons to repaint the barn.

Step-by-step explanation:

The image of the setup is obtained from online and attached to this solution.

The rectangular prism is a cuboid of

Length = 84 ft

Breadth = 38 ft

Height = 20 ft

And the triangular prism on top of the rectangular prism has a vertical height of 12 ft.

The surface area of the composite structure that is available for painting include the 4 sides of the top triangular prism and the four sides of rectangular prism

Two of the faces of the triangular prism are triangles with base of 38 ft and height of 12 ft.

The other two faces of the triangular prism are rectangles with length 84 ft and breadth of the hypoteneuse of the right angled triangle on top.

B² = 12² + 19²

B = 22.47 ft

Total Surface area of the faces of the rectangular prism is then

2×(84×20) + 2×(38×20) = 4880 ft²

Total surface area of the faces of the triangular prism is then

2×(0.5×12×38) + 2×(84×22.47) = 4,230.96 ft²

Total surface area = 4880 + 4230.96 = 9110.96 ft²

1 gallon of paint = 232 ft²

x gallons of paint = 9110.96 ft²

x = (1×9110.96/232) = 39.27 gallons.

Hope this Helps!!!

5 0
3 years ago
Devon has $45 in his savings account. which equation can be used to determine how much devon needs to save in order to have $315
Georgia [21]
<span>He has 45 dollars. He needs 315 dollars in order for him to have 315 dollars he would to need to save what? Then take 315-45= 270 dollars. Therefore he would need to save 270 dollars.

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
</span>
6 0
3 years ago
Read 2 more answers
chelsea deposits $600 into a bank account and is earning simple interest.After 4 years her account has a balance of $621.60.If C
olga nikolaevna [1]
If she deposited $600 and had $621.60 after four years, then she earned: $621.60 - $600 = $21.60 in four years. It means in one year she earned $21.60 ÷ 4 = $5.40. Now we have to find out how many percent of $600 is $5.40:

$5.40 = x% from $600
5.4 = x/100 * 600
5.4 = 600x/100                 / * 100 (both sides)
540 = 600x                       / ÷ 600 (both sides)
x = 0.9

So the interest rate was 0.9% annually.

Now we have to find out how much is 0.9% from $1100:

$1100 * 0.9% =
= 1100 * 9/1009 =
= 9900/1000 =
= 9.9

It means in one year she would earn $9.90. After 7 years she would earn $9.90 * 7 = $69.30, so she would have in her account:

$1100 + $69.30 = <u>$1169.30</u>
8 0
3 years ago
Other questions:
  • What is 31/50 as a percentage
    12·2 answers
  • Express this in scientific notation 13,040,000
    11·1 answer
  • Can somebody help me
    9·1 answer
  • Need Help ASAP). □ ABC is transformed to □ DBE. I posted a picture of the design and questions A, B, and question C. ( Will Mark
    5·2 answers
  • Will reward brainleist
    9·2 answers
  • Suppose SAT Writing scores are normally distributed with a mean of 488488 and a standard deviation of 111111. A university plans
    15·1 answer
  • Mother spent 1/3 of her money on a silver chain and 1/6 of the remainder on a bottle of perfume. She gave her daughter $60.00 an
    8·1 answer
  • Simplify<br> y = 2x2 + 5x + 6<br><br> Please<br> Help step by step
    5·1 answer
  • Simplify the expression (3a^4) (-6a^3) 
    7·2 answers
  • Which expression is not equivalent to
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!