Mathematics High School

The table provides information on road accidents reported to the police for the days in December.

Accidents reported Frequency
0 - 5 18
6 - 10 4
11 - 15 6
16 - 20 3

Estimate the mean.
Give your answer rounded to 1 DP.

Answers

Answer 1

Answer:

31/20 = 1.55

1.6

Answer 2

The mean of on road accidents reported to the police for the days in December is 6.7

What is the meaning of mean ?

In a group of numbers, the mean is the average or most common value. It is a measure of central tendency of a probability distribution along the median and mode in statistics.

It is given in the question about the  information on road accidents reported to the police for the days in December.

Mid point of (0-5) = 2.5

Mid point of (6-10) =8

Mid point of (11-15)=13

Mid point of (16-20) = 18

Mean = (∑Midpoint * frequency )/ (∑ frequency)

[tex]\rm Mean = \dfrac{2.5\times18+8 \times4+13\times6+18\times3}{18+4+6+3}\\\\\\\rm Mean = \dfrac{209}{31}\\[/tex]

Mean = 6.74

Mean = 6.7

To know more about Mean

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Related Questions

2 COLLUM PROOFS 1 question

Answers

Answer:

1. <AOB and <XOZ are vert. <'s           1. Given

   m<AOB = 80     m<XOZ = 6x+5

2. m<AOB = m<XOZ                            2. Vertical <'s are congruent

3. 80 = 6x+5                                       3. Substitution

4. 75 = 6x                                              4. Subtraction Property of equality

5. 12.5 = x                                              5. Division Property of equality    

Step-by-step explanation:

PLEASE HELPPP!!!
what is f(5)?
A. -8
B. -1
C. 1
D. 8​

Answers

Answer:

A. -8

Step-by-step explanation:

Answer:

-8

Step-by-step explanation:

pls help me with this
if m angle P is there less than twice the measure of angle Q and angle P and angle Q are supplementary angles, find each angle measure ​

Answers

Answer:

can you add a picture of the problem?

Step-by-step explanation:

PLEASE HELP PLEASE LIKE NOWWW!!!!!! Which set of numbers is ordered from greatest to smallest?
A
11 2
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D
38 %
2 11
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Answers

Answer:

reword your question i cant read it

Step-by-step explanation:

Yo ! I need help serious

Answers

Answer:

$400

Step-by-step explanation:

If you go to the left of the graph from the line, it gets you to 400.

Answer:

$400

Step-by-step explanation:

Find the average rate of change from a table.

Answers

Answer:

C. 1/2 (1 foot every 2 seconds)

The average rate of change is 1/2 foot.


Given: Y is the midpoint of XZ
Prove: XY = 1/2 XZ
Statements
Reasons

Answers

Answer:

The proposition If Y is the midpoint of XZ, then XY = 1/2 XZ is true.

Step-by-step explanation:

We proceed to present the demonstration of the following proposition:

If Y is the midpoint of XZ, then XY = 1/2 XZ.

1) Y is the midpoint of XZ. Given.

2) [tex]XY + YZ = XZ[/tex] Definition of line segment.

3) [tex]XY = YZ[/tex] By 1)

4) [tex]2\cdot XY = XZ[/tex] 3) in 2)

5) [tex]XY = \frac{1}{2}\cdot XZ[/tex] Algebra/Result

Therefore, the proposition If Y is the midpoint of XZ, then XY = 1/2 XZ is true.

Find the slope of the line through the given points:
(-5, 7) and (-5, 11)

Answers

Answer:

the slope of the line through the given points is x equals negative five.

List the steps for developing a model.

Answers

Answer:

This is for mathematical modeling. . .

Step-by-step explanation:

Mathematical Modeling-

There are four steps to mathematical modeling:

1. Identify the problem and develop a well-defined question.

2.Look for relations and connections between the variables that are involved.

3. Translate features and relationships you have identified into a mathematical model

4. Verify that the mathematical model accurately represents the situation under investigation.

Write the equation of a line in slope-intercept form with a slope of -1 and a y-
intercept of -1.
y = -x - 5
y = -5x - 1
y = -x-1
y= -5x -5

Answers

Answer:

y = -x - 1

Step-by-step explanation:

Slope intercept form is y = mx + b, where m is the slope and b is the y intercept.

Plug in the slope and y intercept into the equation

y = mx + b

y = -x - 1 is the equation in slope intercept form

Answer:

y = -x - 1

Step-by-step explanation:

Slope intercept form is y = mx + b, where m is the slope and b is the y intercept.

Plug in the slope and y intercept into the equation

y = mx + b

y = -x - 1 is the equation in slope intercept form

A garden is shaped in the form of a regular heptagon (seven sided), MNSRQPO. A circle with centre T and radius 25m circumscribes the heptagon as shown in the diagram below. The area of triangle MSQ is left for a children’s playground, and the rest of the garden is planted with flowers. Find the area of the garden planted with flowers.

Answers

You have to insert the photo

2. What is the solution to this equation?
2 x + 3 = x - 4

Answers

Answer: x=-7

Step-by-step explanation:

2x-x=-4-3

Collect terms

X=-4-3

Answer is x=-7

someone help me pleaseee❤️

Answers

Answer:

i believe the answer is A' (-2,5 )  B' (-1, 2) C'  (-3,1)

Step-by-step explanation:

Hope this helps!!

A container has 400 liters of water, and a second container has 800 liters of water. The first container begins filling up at a rate of 4 liters per minute at the same time the second starts draining at a rate of 6 liters per minute. How many minutes will pass until the containers have the same amount of water?​

Answers

Answer:

1000

Step-by-step explanation:

the area of a iscoles triangle having base 3 cm and length of the equal side is 2cm is​

Answers

Answer:

please rotate the picture*

Please help ME!!! I need help

Answers

the LCM is 18. 18 and 36 are both common multiples for 6 and 9 but the least common multiple is the smallest which is 18

Dustin surveyed 50 students at his school about their music preferences. The results are shown in the table. There are a total of 722 students at Justin‘s school. Based on the survey results, which is the best estimate of the number of students who prefer hip-hop music?

Answers

Answer:240 thank me later -Amanda wlms

Step-by-step explanation:

Answer:

240

Step-by-step explanation:

ANyone know how to do power reducing identities

Answers

Answer:

nah

Step-by-step explanation:

Write and solve the equation, and then check your answer.

The sum of two and two tenths and a number is five.

Which statements are correct? Check all that apply.

A.The word “sum” means the result of adding two numbers.
B.The correct equation is n – 2.2 = 5.
C.The correct equation is n + 2.2 = 5.
D. The solution of the equation is n = 7.2.
E.The solution of the equation is n = 2.8.
F.Check the solution by substituting the value for n and simplifying.

Answers

Answer:

A, C, E, F

Step-by-step explanation:

I took the assignment

Answer:

A,C,E,F

Step-by-step explanation:

I KNOW IT IS

X + (-9) = 32
What is the answer

Answers

Answer:

the answer to x+(-9)=32 is x=41

X=41 will be the answer for this

48/1000 decimal form

Answers

Answer:

0.048

Step-by-step explanation:

I've used a calculator, then rounded it for you.

Let me know if you need any more help. :)

You move down 3 units. You end at (5,-2). Where did you start?

Answers

I think it’s (5,-5)

PLEASE HELP! WILL MARK BRAINLIEST!

Answers

Answer:

-25

Step-by-step explanation:

(-6) (-5) - (-5)

    -30 -(-5)=-25

Please help ASAP
I’ll mark you as brainlister please

Answers

A reflection over the y-axis results in having
(-x,y) coordinates

example: (-2,4) turns into (2,4) or (-6,4) turns into (6,4)

Priya bought these items at the grocery store. Find each unit price. A. 12 eggs for $3. How much is the cost per egg? B. 3 pounds of peanuts for $7.50. How much is the cost per pound? C. 4 rolls of toilet paper for $2. How much is the cost per roll? D. 10 apples for $3.50. How much is the cost per apple?

Answers

Answer: A. Cost per egg = $4 .

B. Cost per pound = $ 2.5

C. Cost per roll = $ 0.5

D. Cost per apple = $0.35

Step-by-step explanation:

Formula: cost per item = (total cost) ÷ (number of items)

A. 12 eggs for $3.

Cost per egg = $ (12÷3) = $4

So, Cost per egg = $4 .

B. 3 pounds of peanuts for $7.50

Cost per pound of peanuts = $ (7.50 ÷ 3)= $ 2.5

So, Cost per pound = $ 2.5

C. 4 rolls of toilet paper for $2.

Cost per roll = $ (2 ÷4 ) = $ 0.5

So, Cost per roll = $ 0.5

D.  10 apples for $3.50.

Cost per apple = $ (3.50 ÷ 10)= $ 0.35

So,  Cost per apple = $0.35

what makes this statment true 9^-2=?
a)81
b)18
c)1/81
d)-1/81

Answers

The answer to this statement is c

Consider the graph and equation, y = 3x, that represent Alonso’s walking speed. What relationship is represented by this equation and graph? What would the points (3, 9) and (5, 15) represent? Explain.

Answers

Answer:

The equation, y=3 x,

Step-by-step explanation:

y=Distance traveled

x =Total time

Also, in terms of straight line

Slope =3= uniform Velocity

Point (3,9) and (5,15) represents Distance traveled in 3 (unit of time) =9 unit, and 15 unit=Distance traveled in 5 (Unit of time).

→Alonso is moving with uniform speed=3 (unit of time), as velocity remains constant in the entire process.

Answer:

The equation y = 3x represents a proportional relationship, where y represents distance in miles, and x represents time in hours. The point (3, 9) represents that Alonso walks 9 miles in 3 hours. The point (5, 15) represents that Alonso walks 15 miles in 5 hours.

Multiply
(-4) • (-8)
A. -32 B. -12 C. 12 D. 32

Answers

Answer:

D. 32

Step-by-step explanation:

= ( -4 ) x ( -8 )

= 32

(-4)•(-8)= 32. The answer is D. 32

what is 9/12 in simpleist form

Answers

The answer to this question is 3/4 or .75

Answer:

It's 3/4

Step-by-step explanation:

The Greatest Common Factor is 3.

divide that by 9 and 12, 9 divided by 3 is 3

12 divided by 3 is 4.

Plot the image of the triangle ABCD under a reflection across the Y-axis

Answers

Answer:

Please provide an image or points to plot

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