During a cold winter, the temperature stayed below zero for ten days (ranging from -20 to -5). The variance of the temperatures of the ten day period A. is negative since all the numbers are negative B. must be at least zero C. can not be computed since all the numbers are negative D. can be either negative or positive

Answers

Answer 1

Using the variance concept, it is found that the correct option is:

B. must be at least zero

The mean of a data-set is the sum of all observations divided by the number of observations.The variance of a data-set is the sum of the differences squared between each term and the mean, divided by the number of values.

Since the variance is squared, it's minimum value is 0, and thus, the correct option is:

B. must be at least zero

A similar problem is given at https://brainly.com/question/14946088


Related Questions

Select the correct answer.

Answers

Answer: a

Step-by-step explanation:

A 3-sided polygon that contains a 90° angle is called:

Question 3 options:

A) Pythagorean theorem
B) hypotenuse
C) right triangle
D) Legs

Answers

Answer:

c right triangle

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

A: Method that is used to find either the legs or the hypotenuse of a right triangle.

B: Diagonal line of a right triangle, also used in the Pythagorean Theorem

C: 3-sided shape with a 90-degree angle

D. Lenth and height of a right triangle, used in the Pythagorean Theorem

SOMEONE PLEASE HELP!!
I need someone to explain how to simplify radicals.
The picture is attached

Answers

Answer:

35√2

Step-by-step explanation:

[tex]5\sqrt{98}[/tex] = [tex]5\sqrt{2*49}[/tex] = 5 × √2 × √49 = 5 × 7 × √2 = 35√2

Anyone please help me to solve this problem Fast fast plz plz
please.​

Answers

[tex] - \frac{2}{ \sqrt{2} } \\ \\ in \: \: alternate \: \: form \\ \\ = - 0.7070107[/tex]

hope it helps

which is the correct simplification:
giving brainliest

Answers

Answer:

The answer is letter E.........

Answer:

Step-by-step explanation:

Which describes how to find the solution to 3p < 14?

Answers

Answer:

p < 14/3

Step-by-step explanation:

Answer:

a.divide both sides with 3

Step-by-step explanation:

A chef made 20 desserts in

60 minutes. How many

minutes would it take him

to make 90 desserts?

Answers

it would take him 270 minutes

Which statement describes the meaning of the point (6,30) on the graph ?

Answers

The answer is D. There are 30 grams of protein in 6 tablespoons of peanut butter. pls mark me brainliest if this helped :)

p(x) = 4x
i need the linear function, and how to graph it

Answers

Step-by-step explanation:

well, that's the graph. I hope it helps.

x can be any number, just substitute the value of x chosen into the linear function and get the corresponding p(x) value

like, say x=2, p(x)=4(2)=8. locate the points (2,8) on the graph paper and mark them. continue to do this for more values of x.

for the functions u(t) = 7t - 2 and s(t) = t^2 - 9, what is s (u(2))?

Answers

Answer:

[tex]s(u(2)) = 135[/tex]

Step-by-step explanation:

[tex]u(t) = 7t - 2 \\ u(2) = 7(2) - 2 \\ u(2) = 14 - 2 \\ u(2) = 12 \\ \\ s(t) = {t}^{2} - 9 \\ s(u(2)) = {(12)}^{2} - 9 \\ s(u(2)) = 144 - 9 \\ \\ s(u(2)) = 135[/tex]

I hope I helped you^_^

For the functions u(t) = 7t - 2 and s(t) = t² - 9. s(u(2)) = 135

What is a function?

A function is a mathematical equation that shows the relationship between two variables.

For the functions u(t) = 7t - 2 and s(t) = t² - 9.To find what is s(u(2)), we proceed as follows.

Since u(t) = 7t - 2. Then u(2) is evaluated when t = 2. So, we have that

u(t) = 7t - 2

u(2) = 7(2) - 2

u(2) = 14 - 2

u(2) = 12

Now, since u(2) = 12 and s(t) = t² - 9

s(u(2)) is evaluated as follows

s(t) = t² - 9

s(u(2)) = 12² - 9

s(u(2)) = 144 - 9

s(u(2)) = 135

So, s(u(2)) = 135

Learn more about function here:

https://brainly.com/question/29631554

#SPJ3

no need for explanation jsut answer

Answers

Answer:

y=4 because 8x4=32

32-2 =30

30+60=90

Answer:

the value of y is 4, so 8(4)-2 are 30 , then 30 degrees are the angle

Just add a random answer

Answers

thx ig lol how are u

Yolanda would like to attend a 12-month program that will certify her as a court reporter. The program costs $8,500 in tuition, fees, and books and will allow her to make
about $31,250 a year when she becomes certified. She will not have time to work during the year of training. Assuming she could make $18,000 a year without the
training, how many years will it take her to recoup her investment? years

Answers

Answer:

15 months and 8 days  

Step-by-step explanation:

31,250 / 12 = 2604.16667  8,500/ 2604.16667 =  3.264 months of second year   12 + 3.264 = 15.264 months  days 30 * 0.264= 7.92  add the together = 15 months and 8 days  

Which number line represents all of the values of x for the equation x2 = 36?

Answers

Answer:

D

Step-by-step explanation:

Write the slope intercept form of the equation of the line through the given point with the given slope.

(0,-1), slope=3

Answers

Step-by-step explanation:

y=mx+c

-1=3(0)+c

c=-1

y=3x-1

What Is the slope of the line on the graph?​

Answers

Answer:The slope equals the rise divided by the run: . You can determine the slope of a line from its graph by looking at the rise and run. One characteristic of a line is that its slope is constant all the way along it. So, you can choose any 2 points along the graph of the line to figure out the slope.

Step-by-step explanation:

Simplify each of the following:
a. √5+2√6 + √5-2√6
b.(√p^2+1 - √p^2-1) (√p^2-1 + √p^2+1)

Answers

2√5 exact form

4.47213595 decimal form

please solve for me ​

Answers

Answer:

Kznnznxndnnx xkndnx xjx xjxndjxs mxmzmxmx. J xnd dnxndnxjndnx. Jx xis bx 9837ei3xid dus

Step-by-step explanation:

Szjnznz s8sbbsnsjs

Mzmzmznzm

Mzmsmxmx

Mzmxmkx

Z

Km mmx

Zkskms

Kzmz

a wheel has diameter 84cm.During a journey the wheel make 800 complete revolutions. how many meter does it travel?

Answers

Answer:

2110.08 meters

Step-by-step explanation:

find the circumference of the wheel

Divide 84 by 2 to find the radius.

84/2=42

C=2πr

C=2(3.14)(42)

C=263.76 cm

263.76*800=211008cm

Divide by 100 to convert to meters

211008/100=2110.08

2110.08 Meters

Hope this helps!

What is 5,000 + 5,000?

Answers

Answer:

5,000+5,000= 10000

Step-by-step explanation:

Select the better deal in the pair. Then give the unit rate for the better deal.

$272/
8 g
or
$369/
9 g

Answers

Answer:

The better deal is $272/ 8 g

369/9=41 per gram

272/8=34 per gram

Allow me to know if this helped by clicking thank you, brainly or rate.

<3 Miss Hawaii

There are 80 students in a school. If 40 percent of the students are boys, how many girls are in the school

Answers

Answer:

48

Step-by-step explanation:

80x40%=80x.4=32 boys. 80 students-32 boys = 48 girls

what is one way to find the number of minutes in 7 hours?

Answers

Answer:

Seven dived by 60

Step-by-step explanation:

60 minutes makes an hour, so if you divide 7 hours by 60 minutes you could easily get an answer.

Multiplication.

because 1 hour = 60 minutes

and for you, there is 7 hours, you'd just do 7 x 60.

The answer would be the number of minutes (in those seven hours).

7 x 60 is 420 minutes just in case you were wondering.

helppppppppppppppppppppppppppppppppppppppppppp

Answers

Answer:

hope you like my answer its 2/7


PLEASE HELP i need this for today at 4

Answers

Step-by-step explanation:

Work out the value of x.

#12

The angles are supplementary as same side interior angles, sum to 180°:

x + x - 26 = 1802x = 206x = 103#13

The angles are corresponding, hence congruent:

3x - 5 = x + 553x - x = 55 + 52x = 60x = 30#14

The angles are supplementary as same side interior angles, sum to 180°:

2x + 24 + x = 1803x = 180 - 243x = 156x = 52#15

The angles are corresponding, hence congruent:

4x - 12 = 3x + 64x - 3x = 6 + 12x = 18#16

Corresponding with the right angle:

4x + 12 = 904x = 78x = 19.5#17

Vertical angle of the bottom angle is supplementary with the top angle:

2x + 12 + 3x + 23 = 1805x + 35 = 1805x = 145x = 49

Answer:

It is given

4x+3y=24

We can also write it as

3y=24−4x

 y=324−4x

Substituting x=0 in the given equation

 y=324−4(0)

 So we get 

 y=324

 By division 

 y=8 

 Substituting x=3 in the given equation 

 y=324−4(3)

 So we get

 y=312

 BY division 

 y=4

Someone please help it’s due soon..

Wilde River Highschool and Oakview Mills High Schol played each other in a football game for the country Championship. Going into the 4th quarter, the teams were tied 21-21. Based on the following statistics in the 4th quarter, make an argument for which team you predict to win. Be sure to include mathematical reasoning in your argument.

Gains- Closer to scoring
Loses- Farther from scoring

SOMEONE PLEASE HELPPOOO

Answers

Answer: Oakview Mills will win

Step-by-step explanation:

From the story the Black cat why did the man take out the cats eye

Answers

Answer:

Removing the cat's eye is the beginning of the end, so to speak, for the narrator. Until that moment, the cat had thus far escaped his drunken cruelty, so this act signifies that the narrator had reached a certain mental point: there were no longer any limits to his violent behavior.

Step-by-step explanation:

Angle A and B are complementary

m∠A= (x - 4)°

m∠B= (2x + 7)°

Can you solve this for me please!!

Answers

Answer:

Step-by-step explanation:

x-4+2x+7=90

3x+3=90

   -3    -3

3x=87

x=29

m<A= 29-4

      =25

m<B=2(29)+7

       =58+7

       =65

Find the missing side of each triangle. Round your answers to the nearest tenth if necessary. (Please Show your work)

Answers

>> Answer

___________

[tex] \: [/tex]

[tex]\boxed{ \rm{answer \: by \: { \boxed{ \rm{☆HayabusaBrainly}}}}}[/tex]

Step by step :

This is question no picture soo iam in step question before.

x² = 3² + 4²

x² = 9 + 16

x² = 25

x = 5yd

I need some help with this plz

Answers

Answer: acute angle

Step-by-step explanation:

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