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
Kobotan [32]
3 years ago
11

if the variance of the data values in a population is 256, what is the standard deviation of the data values?

Mathematics
1 answer:
kumpel [21]3 years ago
5 0
The standard deviation is the square root of the variance

so if the variance is 256, then the standard deviation is : sqrt 256 = 16 <==
You might be interested in
Can someone help me with this task please? !!
viva [34]

Answer:

we need to get your brain thinking in this way. that you begin to understand how to do these things.

airways to say that your brain is not working that way, is not a valid excuse. we need to change that. your brain needs to get used to this way of thinking.

so, please, please, PLEASE go through the explanations below and tell me, where exactly in these explanations you stopped understanding what I was saying. so that I can better explain to you what is happening.

1. (0, -2)

2. 4

3. a geometric sequence. the common ratio is -2.0

4. the third option

5. the fourth option

Step-by-step explanation:

1. as x increases, y decreases. until, suddenly after x=0, this tendency reverses, and with increasing x also y increases. so, this is a turning point.

2. look at the line. it only starts with x>0 (it looks like x is around 1).

"input" is all the values of x the function has a defined result for (y = result values).

so, as there is no line for negative x, we can eliminate the first 2 answers.

x=0 is no valid answer either (as mentioned above, the line only starts well after x=0).

in the answer options the only x value having an y value above or below this x value is x=4.

3. look at the difference between 2 numbers next to each other in the sequence.

2.4 to -4.8

-4.8 to 9.6

and so on.

what do we need to do to get from the left to the right ?

we need to multiply by -2.

so, the relationship between "sequence item n" (an) to "sequence item n-1" (an-1) is a ratio, a multiplication factor :

an/an-1 = -2

4. it is completely simple. a function can be many things. on an x/y coordinate grid it can have gaps, it can have sharp direction changes,...

but there us one thing a function can never have : multiple different y values for one x value.

in the first graph x=2 has two different y values (-1 and -3). so, it is not clear what the result for x=2 would be. and that means, it is not a function.

in the second graph x=4 has two different y values.

in the third graph all is OK.

in the fourth graph x=-2 has two different y values.

so, only the third option is a function.

5. this function calculates the height of the thrown rock after t seconds of flight.

therefore, only the fourth answer makes sense.

4 0
3 years ago
Which ordered pair is a solution of the equation y = 3x?
balandron [24]

I believe it’s b or c... Hope this helps!

3 0
3 years ago
A model of a rectangular patio at a landscaping business will be enlarged by a scale factor of 2 when it is installed in a custo
VARVARA [1.3K]

Answer:

C)  The area of the landscape model is A = 40 sq ft.

Step-by-step explanation:

The original dimensions of the rectangular patio model  is

Length = L

Width = W

Area of the patio model  = LENGTH x WIDTH =   L  x W

⇒ A  =  L W .............  (1)

Now, the new area A" is enlarged by a factor of 2

⇒  The new Length = L"  = (2 L)

     The new Width  = W"  = (2 W)

So, AREA"  = L" x W" = (2 L) x (2 W)  = 4 (L W)

⇒  A "  =    4 (L W)

But, L W = A   .. from (1)

⇒   A"  = 4  A

But,  the area of the new enlarged patio is 160 square feet.

⇒   160 sq ft  = 4 x A

or, A   = 160 / 4 =40 sq ft

⇒ A = 40 sq ft.

Hence, the area of the landscape model is A = 40 sq ft.

5 0
3 years ago
Read 2 more answers
1. identify the corresponding sides on the figure below
Assoli18 [71]

Answer:

No because one side is 8 and the other is 18

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the value of x + y(3 - x) when x = -5 and y = 3?
cestrela7 [59]

Answer:

E. 19

Step-by-step explanation:

Step 1: Plug in the x and y values mentioned:

-5 + 3(3 - (-5))=

Step 2: Distribute the three:

-5 + 9+15=

Simplify:

19

<em>Hope this helped and plz mark as brainliest!</em>

<em></em>

<em>Luna G.</em>

4 0
3 years ago
Other questions:
  • Find the exact roots of x^2+10x-8=0 by completing the square
    13·1 answer
  • Two six-sided dice are rolled. Find the probability that the sum of the two faces that turn up is between 1 and 14.
    12·1 answer
  • 2x+3=5 and 3y+7=6, what is x+y?
    8·2 answers
  • Write 927 and 15 hundredths in standard form
    8·1 answer
  • PLEASE HELP I GIVE THANKS
    13·2 answers
  • What addition doubles fact can help you find 4 + 3 explain how you know
    13·2 answers
  • How do i reflect shapes onto themselves ?
    11·1 answer
  • Which is the correct formula for the function?
    9·1 answer
  • a trapezoid has a perimeter of 14ft what will the perimeter be if each side length id increased by a factor of 7
    12·1 answer
  • I need help with this math problem
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!