the table shows the heights of 40 students in a class calculate an estimate for the mean height of the students

Answers

Answer 1

Answer:

For mean

To show the mean of height measures for 40 students, you need to write-out exactly 40 heights into a calculator and add them up.

Then divide that total number by 40.

Step-by-step explanation:

Eg for 4 students

5 , 5.1, 5.2, 5.7 = 21ft

21/4 = 5.25ft.

Apply the same method but use 40 measures in addition for calulator or long addition. Then divide by 40.

Related Questions

Solve the system using elimination and find the y and x coordinates

Answers

Answer:(-1,1)

Step-by-step explanation:

Answer:

Your answer is: (2,-1). I provided a picture in case you need to show your work.

1. A survey asked 200 Grade 4 students about their reading preferences. Based on Graph #1, about how many of them would you expect to prefer comic books?

A. 10

B. 20

C. 70

D. 80

E. 100

2. About how many students do not prefer non-fiction?

A. 60

B. 75

C. 100

D. 150

E. 180

3. Overall, about how many students prefer literature (poems, plays, or novels)?

A. 45

B. 90

C. 100

D. 130

E. 180

Answers

Answer:

1) a. 80

2) d. 150

3) e. 90

1. a
2. d
3. e hope this helps!

n ΔBCD,
m
∠
B
=
(
5
x
+
14
)
∘
m∠B=(5x+14)
∘
,
m
∠
C
=
(
x
+
19
)
∘
m∠C=(x+19)
∘
, and
m
∠
D
=
(
2
x
+
19
)
∘
m∠D=(2x+19)
∘
. What is the value of
x
?
x?

Answers

Wt bro what is that 62542

I don’t know what the answer is.
Next time please write the question out better it is really hard to read.

whats the percent error?

Answers

18% because it’s about 17.94% but it’s rounded to the nearest percentage.

Answer: 18%

the percent error is 18 percent, rounded to the nearest percentage

Find the value of x so that m||n

Answers

Answer:x=17

Step-by-step explanation:

Set 6x+5+5x-12 equal to 180

Simplify into 11x-7=180

Add 7 to both sides to get 11x=187

Divide both sides by 11 to get x=17

Answer:

The value of x is -17

The 6x+5 angle would be 97-degree angle and the 5x-12 angle would be a 45-degree angle

I hope this helps.

Latrell and his cousin, Tisha, met at a state park to go for an all-day hike. Latrell drove 122 miles to get to the park, and it took him 2 hours. Tisha drove 96 miles to get to the park, and it took her 1.5 hours. On average, how much faster did Tisha drive than Latrell?
Write your answer as a decimal or a whole number.

Answers

Answer:

122/2=61mph

96/1.5=64mph

3 mph more

Answer:

3 Miles

Step-by-step explanation:

Two friends, Rahul and Arun, took summer jobs. The equation y = 17.3x represents Arun's earnings in dollars and cents, y, for working x hours. The graph below represents Rahul's earnings in dollars and cents, y, for working x hours.

How much more does Rahul earn per hour than Arun?

Answers

Answer: Rahul earns 3.5 dollars more per hour than Arun.

Step-by-step explanation:

17.3 is the slope of Arun's earnings. To find what Rahul makes in an hour, you can find the slope of his graph below.

Use the two points, (10,208) and (20, 416)

Use the formula for calculating slope:

416-208=208

20-10=10

---------------------

208/10= 20.8

Rahul's equation can be set up like this:

y=20.8x

Subtract:

20.8-17.3=3.5

Therefore, Rahul earns 3.50 dollars more per hour than Arun.

i'll give brainliest! random answers will be reported!
Show that the following equations are true. Express your answers in terms of variables.
1. even integer + even integer = even integer
2. odd integer + odd integer = even integer

Answers

Answer:

1:-2x(even)+2x(even)=4x(even)

7x(odd)+7x(odd)=14x(even)

Step-by-step explanation:

hope it helps

Answer:

1:-2x(even)+2x(even)=4x(even)

7x(odd)+7x(odd)=14x(even)

Step-by-step explanation:

use odd and even numbers

<3<3<3 hope this helps

Which point is a solution to the inequality y ≤ 8x – 3?

A) (–2,–18)

B) (–3,–17)

C) (4,29)

D) (3,22)

PLEASE HELP :)

Answers

The answer is D :D i hope this helps

d. (3,22)
hope this helps :)

Find the surface area of the pyramid. A rectangular pyramid with length 45 centimeters and a width of 18 centimeters. On the side with 45 centimeters it has a slant height of 15 centimeters. On the side with 18 centimeters it has a slant height of 25.5 centimeters.

Answers

Answer:

166.5

Step-by-step explanation:

you have to kinda create it out on paper flat and just add all.

Good luck, i am blonde so maybe

wrire two expressions for 2x+3

Answers

Answer:

x+x+3, 2x+1+2

Step-by-step explanation:

Answer: x+x+3 and 2x+2+1

Dione collects trading cards. His favorites are baseball and football cards. For
every 9 baseball cards he owns, Dione has 16 football cards. What is the ratio
of baseball cards to football cards in his collection?
OA. 16 to 9
OB. 9:16
C. 9 and 16
O D. 16

Answers

Answer:

Correct option is B) 9:16

Answer:

9:16

Step-by-step explanation:

Which graph shows the solution set of the inequality y ≥ 2x – 6, which is equivalent to 10x – 5y ≤ 30?

cant provide answers sorry but if you know the question please help

HELP FAST

Answers

Answer: The solution set of the system of inequalities is the region above the dashed line (y=-2x-2) and below the solid line (y=x+4).

Please, see the attached graph.

Answer: B

Step-by-step explanation: sorry i was a year late lol

Valentina and her parents are on a long drive to Monterey Bay to go kayaking. She passes the time by counting how many different colors of cars she sees. The table below shows the results.
Color of car Number of cars
black 4
red 7
silver 12
white 14
brown 5
blue 3
Based on the data, what is the probability that the next car seen is brown?
Write your answer as a fraction or whole number.

Answers

Based on the data provided, Valentina saw a total of 4 + 7 + 12 + 14 + 5 + 3 = 45 cars. Out of these cars, 5 were brown. Therefore, the probability that the next car seen is brown is 5/45 which can be simplified to 1/9.

Answer:

Step-by-step explanation:

Use the distributive property to write the following in expanded form:

1. 5(7h + 3m) =
2. e(f+g) =

Answers

1 is 35h + 15m

2 is ef + eg

answer 1. is 35h+15m

Can someone please help me!?
The length of a rectangle is 6 times its width. If the perimeter of the rectangle is 98 in, find its length and width.

Answers

Answer:

length - 42

width - 7

Step-by-step explanation:

42 and 7 hehehe i hope this helps

The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.

Mountain View School Seaside School
0 5, 8
9, 8, 2, 0 1 0, 1, 2, 5, 6, 8
8, 7, 6, 5, 5, 4, 4, 3, 1, 0 2 5, 5, 7, 7, 8
0 3 0, 6
Key: 2 | 1 | 0 means 12 for Mountain View and 10 for Seaside

Part A: Calculate the measures of center. Show all work. (2 points)

Part B: Calculate the measures of variability. Show all work. (1 point)

Part C: If you are interested in a smaller class size, which school is a better choice for you? Explain your reasoning. (1 point)

Answers

To calculate the measures of center, we need to find the mean and median for each school.

For Mountain View School:
Data: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 0 + 1 + 2 + 3 + 4 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 8 + 8 + 8 + 9) / 19
= 100 / 19
≈ 5.26

To find the median, we need to arrange the data in ascending order: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5

For Seaside School:
Data: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 1 + 1 + 2 + 2 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 7 + 8 + 8 + 8 + 9) / 19
= 80 / 19
≈ 4.21

To find the median, we need to arrange the data in ascending order: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5

Now let's calculate the measures of variability, specifically the range and interquartile range (IQR).

Range: The range is the difference between the largest and smallest values in the dataset.

For Mountain View School:
Range: 9 - 0 = 9

For Seaside School:
Range: 9 - 0 = 9

Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1) and measures the spread of the middle 50% of the data.

For Mountain View School:
Q1 = 3
Q3 = 7
IQR = Q3 - Q1 = 7 - 3 = 4

For Seaside School:
Q1 = 2
Q3 = 7
IQR = Q3 - Q1 = 7 - 2 = 5

To determine which school is a better choice for a smaller class size, we can consider both the mean and the median.

Both the mean and median for Mountain View School are higher than those for Seaside School. This suggests that, on average, the class sizes at Mountain View School are larger than those at Seaside School. Therefore, if you are interested in a smaller class size, Seaside School would be a better choice

Part A:

For Mountain View School:
- Median: The median class size is the middle value, which is 25.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (29 + 28 + 28 + 27 + 25 + 24 + 24 + 23 + 21 + 20 + 19 + 18 + 15 + 13 + 10) / 15 = 21.27.

For Seaside School:
- Median: The median class size is the middle value, which is 20.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (25 + 25 + 27 + 27 + 28 + 28 + 28 + 30 + 31 + 35 + 36 + 38 + 40 + 43 + 45) / 15 = 31.13.

Part B:

For Mountain View School:
- Range: The range is the difference between the largest and smallest values, which is 29 - 10 = 19.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 20 and Q3 is 28. Therefore, the IQR is 28 - 20 = 8.

For Seaside School:
- Range: The range is the difference between the largest and smallest values, which is 45 - 25 = 20.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 27 and Q3 is 38. Therefore, the IQR is 38 - 27 = 11.

Part C:

If you are interested in a smaller class size, Mountain View School is a better choice for you because it has a lower mean and median class size than Seaside School.

Expand and combine like terms.

(4b^2+3)(4b^2-3)

Answers

Answer:

16b^4-9

Step-by-step explanation:

Factoring gives us 16b^4+12b^2-12^2-9. Simplifying gives us the answer which is 16b^4-9

Answer:

$16b^4-9$

Step-by-step explanation:

When multiplying binomials, we can use a method called FOIL (First-Outside-Inside-Last).

For $(t_1+t_2)(t_3+t_4)$, let:

$t_1\implies \text{First Term},\\t_2\implies \text{Second Term},\\t_3\implies \text{Third Term},\\t_4\implies \text{Fourth Term}$

In the FOIL method, the steps go:

$\text{\textbf{F}irst: Multiply the first and third terms (first term of each binomial)},\\\text{\textbf{O}utside: Multiply the first and fourth terms},\\\text{\textbf{I}nside: Multiply the second and third terms},\\\text{\textbf{L}ast: Multiply the second and fourth terms (last term of each binomial) }$

Given $(4b^2+3)(4b^2-3)$, we have:

$\text{First: }4b^2\cdot 4b^2,\\\text{Outside: }4b^2\cdot -3,\\\text{Inside: }3\cdot 4b^2,\\\text{Last: }3\cdot -3,\\\rightarrow 16b^4-12b^2+12b^2-9$

Combine like terms:

$\boxed{16b^4-9}$

Find the percent increase. Round to the nearest percent.

From 81 books to 137 books

The percent increase is ___%

Answers

Answer:

it is 54

Step-by-step explanation:

Extra Points! Please Help!
A triangular prism has a height of 21cm and the area of the base is 7cm. What is the Volume?

Answers

Answer:

The volume of the triangular prism is 147 cm squared

Step-by-step explanation:

the formula is 1/2xbxhxl

multiplying 21x7x1/2 results in 147

With the height of 21cm and the base 7cm the volume will be…
V=147cm³

Which expression is equivalent to
14y+y+3y+14−2?

Answers

Answer:

18y+12

Step-by-step explanation:

14y+y+3y=18y 14-2=12

18y + 12 is equivalent to 14y+y+3y+14-2

can someone pls help with this

Answers

Answer: I can not draw but if you such up, example 30 degree angle, it will show you pics which then you can chose from and draw.

here is the first 5

What’s j+12=25 tape diagram

Answers

well you would take 25 and take 12 away. like this: 25-12=? so 25-12 would be 13. therefore j=13!

What is an Equation?

An equation is a mathematical statement that shows two mathematical expressions equal.

An equation consists a variable that does not have a fixed value to it.

Given,

j+12=25

Here ‘j’ is the variable.

To find ‘j’ we just need to 12 from 25.

So, 25 - 12 = 13

Hence, now we know that ‘j’ is equal to 13.

Proof :

13 + 12 = 25

Learn more about Equations here

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Hope my answer helps you✌️

Mark BRAINLIEST

help plz

A certain ceiling is made up of tiles. Every square meter of ceiling requires 10.75 tiles.

What is the value of the red X?

Answers

Answer:

Its in the sentence you wrote.

Step-by-step explanation:

Every SQUARE METER of the ceiling requires 10.75 tiles. So, logically the answer would be 10.75

Your answer will be 10.75 :)

What is the average rate of change for this function for the interval from x = 2
to x= 4?
1
A.1/12
B. 6
C. 12
D.1/6

Answers

B because (16-4)/2=6

TRUE OR FALSE?
-7 = (-5) - (-12)

Answers

Answer:

false

Step-by-step explanation:

-7=(-5)-(-12)

-7=-5+12

-7=7 is not true

Answer
False
Explanation

Mr. Herrera’s class has 13 girls and 7 boys. If all the students in Mr. Herrera’s class are present, what is the probability that the first student randomly selected to answer a homework question will NOT be a boy?

Answers

Answer:

13/20

Step-by-step explanation:

13 girls out of all 20 kids

Answer:

13/20

Step-by-step explanation:

ITS SIMPLE

I have two questions i need you two answer giving brainliest. (and if you waste my points you are getting reported and they take down post that are reported pretty quickly at this time)

Answers

Answer:

2.) 3/5 divided by 1/10 = 6

(I'm not too sure what number one is..)

What is the solution to the equation?

9/10 x+4/5=28.3

choices:
x=133/5
x=275/9
x=97/3

Answers

Answer:

x = 275/9

Step-by-step explanation:

what value of x makes this equation true -(x+3)=2(x-3)

A. 0
B. 1
C. 2
D. 3

Answers

Answer:

To solve the equation -(x + 3) = 2(x - 3) for x, we can follow these steps:

Step 1: Distribute the negative sign on the left side of the equation:

-(x + 3) = 2(x - 3)

=> -x - 3 = 2(x - 3) (using the distributive property)

Step 2: Expand the right side of the equation:

-x - 3 = 2x - 6

Step 3: Add x to both sides of the equation to isolate the x term on one side:

-x + x - 3 = 2x + x - 6

=> -3 = 3x - 6

Step 4: Add 6 to both sides of the equation:

-3 + 6 = 3x - 6 + 6

=> 3 = 3x

Step 5: Divide both sides of the equation by 3 to solve for x:

3/3 = 3x/3

=> 1 = x

So, the correct value of x that makes the equation true is B. 1.

PLEASE MARK BRAILYISTT :D

Answer:

B, one

Step-by-step explanation:

In order to solve this, you can solve the equation. First, you can use the distributive property to get -x-3=2x-6. If you make the variables on one side and the constants on the other, you will get -3x-3=-6. This can further simplify to -3x=-6. Divide both sides by -3 to get that x=1. Then, the correct answer is B.

Other Questions

Edith Carolina is president of the Deed Corporation. The company is decentralized, and leaves investment decisions up to the discretion of the division managers. Michael Sanders, manager of the Cosmetics Division, has had a return on investment of 14% for his division for the past three years and expects the division to have the same return in the coming year. Sanders has the opportunity to invest in a new line of cosmetics which is expected to have a return on investment of 12%. The company's minimum required rate of return is 8%. If the Deed Corporation evaluates managerial performance using residual income based on the corporate minimum required rate of return of 8%, what decision would be preferred by Edith Carolina and Michael Sanders? Carolina SandersA) accept reject B) reject acceptC) accept acceptD) reject reject A. Choice A.B. Choice B.C. Choice C.D. Choice D. HELP ME I WILL MARK BRAINLIEST !!!List three kinds of neurons that would be involved in a reflex impulse. 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