Mathematics Middle School

please answer the question in the picture below!

Answers

Answer 1

Answer:

Step-by-step explanation:

b is correct becauss numbers are correct

Answer 2

Answer:

Option B

Step-by-step explanation:

Consider y = 9 and x = 2

Coming to options

y = x + 4

9 = 2 + 4

9 ≠ 6

y = 4x + 1

9 = 4(2) + 1

9 = 8 + 1

9 = 9

y = 2x + 3

9 = 2(2) + 3

9 = 4 + 3

9 ≠ 7

y = 3x + 2

9 = 3(2) + 2

9 = 6 + 2

9 ≠ 8

Related Questions

polygon QRST has vertices Q41/2 , 2 R 8/2 ,2 S 8 1/2 , -3 1/2 and T 4 1/2,-3 1/2 is polygon qrst a reactangle? justify your anwerer

Answers

Answer:

QRST is a rectangle.

Step-by-step explanation:

To decide whether this is a rectangle or not, we have the following options to choose from:

Prove that:

2 pairs of sides are parallel and one angle is 90°

2 pairs of opposite sides are equal and one angle is 90°

1 pair of sides is parallel and equal and one angle is 90°

All four angles are 90°

The diagonals are equal and bisect each other. (same midpoint)

I will go with option 1, because this only requires finding the slope of each of the 4 lines.

Note that:

points Q and R have the same

value

⇔

horizontal line

points S and T have the same

value

⇔

horizontal line

points Q and T have the same

value

⇔

vertical line

points R and S have the same

value

⇔

vertical line

Therefore QRST has to be a rectangle because horizontal and vertical lines meet at 90°.

The opposite sides are therefore parallel and equal and the angles are 90°

The anwser is that a....

QRST is a rectangle

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.

Hanna says you cannot represent the fraction One-fourth on the number line.

A number line going from 0 to 1 with 8 equal spaces between 0 and 1.

Which statement best explains Hanna’s thinking?
Hanna is correct. The space between consecutive integers is divided into eight parts and not four. You cannot represent One-fourth on the line.
Hanna is correct. The number line stops at 1, and you need to be able to have 4 on the graph to graph One-fourth.
Hanna is not correct. You can graph One-fourth if you extend the number line to 4.
Hanna is not correct. The fraction One-fourth is equal to 2/8, so you can graph it on the second tick mark to the right of zero.

$Hanna says you cannot represent the fraction One-fourth on the number line.A number line going from 0$

Answers

Answer:

★ Hanna is not correct. The fraction One-fourth is equal to 2/8, so you can graph it on the second tick mark to the right of zero.

Step-by-step explanation:

Hope you have a great day ;-)

Can you guys help me with any questions to 7 or 8 or 9 or 10
YOU DONT HAVE TO DO ALL OF IT JUST PICK A NUMBER
IF you want to 7 or 8 or 9 or 10 thats fine

Answers

but the answer to 7 is 96

Answer is to number 8 is 16

please help me

(file below)

Answers

Answer:

at very bottom cuz im lasy to copy and paste :p

Step-by-step explanation:

13+18+6 is the total which is 37

Cinder cones probability is 13/37 or 0.35

Shield Volcano's probability is 18/37 or 0.486. rounding up we get 0.49

Stratovolcano's probability is 0.16.

Answers in order is 0.35, 0.49, 0.16

The table and the graph below show Josie’s and Salvador’s wages, respectively, based on the number of hours worked. In 2012, Josie and Salvador each worked an eight-hour day for six days each week.

Answers

Answer:

a || 8.25

b || 7.5

c || 1.25

Can someone help me asap I will make you the brainliest

Answers

Add all of them together, you get 40 then divide by 8 because there are heights listed then the mean height is 5

Answer is 5

Help ill mark brainliest if its right

Answers

Answer:

<1 and <8

corresponding angles

vertical angles

<t and <x

A ball rolled from Point A to Point B in 18 second at a speed of 14 m/s. IT took another 18 seconds to roll form Pint B to Pint C at a speed of m/s. Find the total distance the ball rolled.

Answers

Answer:

d=252m, u dint put the speed it was rolling at from point B to C so I could only solve for A to B. However if you use the formula below you can find the distance from B to C and add that to A to B giving the total distance rolled.

Step-by-step explanation:

d=vt

v=14m/s

t=18s

d= vt, (14m/s)(18s)

d=252m

D =252 m is the correct answer

Describe triangle ABC in terms of its sides and angles

Answers

Answer:

Right angle triangle

Step-by-step explanation:

Given triangle is right angle triangleIt is a type of triangle that has one of it's angles equal to 90 degrees.The other two angle sum up to 90 degrees.Here AC side is perpendicular and the AB side is base of the triangle.And the third side that is called CB which longest side of all three sides that is called hypotenuse.

Answer: Scalene, Right Triangle

Step-by-step explanation:

There are three main terms that describe triangles by their side length: equilateral (all three sides are the same length), isosceles (two sides are the same length), scalene (all three sides are different lengths).

Since all of the sides are different lengths, this is a scalene triangle.

There are three main terms that describe triangles by their angles: acute triangle (all three angles are acute), obtuse triangles (one obtuse angle and two acute angles) and right triangles (on right angle, which means the other two will be acute).

Since this triangle has a right angle (indicated by the square symbol on angle A), it must be a right triangle.

-3 + 6x. Which expression shows the correct factorization?
Here are the ones to pick from
1. -2 + -2 +6 +x
2. 6(-2 +x)
3. 6(-2 +x)
4. -3 (1 - 2x)

Answers

Answer:

Option #4

Step-by-step explanation:

Expand option #4

=-3(1-2x)

=-3 -2x*-3

=-3+6x which is what your original equation was.

becoz it is a multiple choice, we can go by elimination, hence when we expand #4, we will get -3+6x

Solve for p.
-2p=-3p+8

p=

Answers

Answer:

p=8

Step-by-step explanation:

-2p+3p=8 because u move -3p to the other side it becomes positive p

so p=8

Answer: 8

Step-by-step explanation:

Select the example which illustrates the distributive property of 7 × 39

(7 + 3) (7 + 9)

(7 × 30) + 9

39 × 7

7(30 + 9) = 7(30) + 7(9)
THIS IS URGENT- BLUE!!!

Answers

Answer:

d) 7(30 + 9) = 7(30) + 7(9)

Step-by-step explanation:

Distributive method:

a(b + c) = ab + ac

Here given:

7 × 39

Among the option's:

1st option (7 + 3) (7 + 9) is wrong, changes final answer.

2nd option (7 × 30) + 9 is wrong, changes final answer.

3rd option 39 × 7 shows commutative property of multiplication.

4th option show distributive method.

It would be the 4th answer. It is the only choice that shows the 7 being distributed onto the 30 and 9 and it still gives you the right answer

How do you find the equation of a line passing through the points (2,-4) and (-6,-2)?

Answers

Answer:

hoi zäme ich habe die Mail von gestern Abend

Factor 140c +28- 14a
Choose 2 answers:

A
7(20c + 4 - 2a)
B
2(70c +28 -14a)

C
14 (10c +2 -a)

D
2 (70a +14 -7c)

Answers

Answer:

A and C

Step-by-step explanation:

Answer:

C and A

Step-by-step explanation:

140c+28-14a

Rewrite 28 as 2*14

Rewrite 140 as 10*14

=10*14c+2*14-14a

Factor out common term 14

=14 (10c +2 -a)

Then u just distribute to find the second answer

What is the formula to find the circumference of a circle and how do i do it?

Answers

Answer:

circumference of a circle = 2*pi*radius

just multiply 3.14 (pi) by 2 by the radius/diameter divided by 2

Henry is building an in-ground pool at his house. He is doing most of the work himself to save money. To dig the pool, he rents a small backhoe for $95.50 a day. If his total bill comes to $286.50, for how many days does he rent the backhoe?
HELP PLZ GIVING 20 POINTS!

Answers

Answer:

3 days

Step-by-step explanation:

$286.50/$95.50= 3

Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?

Answers

To determine whether Keira's statement is correct, we need to analyze the information provided.

According to Keira, if 6 tickets are sold, there should be 2 tickets left. However, we don't have any information about the initial number of tickets available.

If the total number of tickets initially was 8, and 6 tickets were sold, then there would indeed be 2 tickets left, supporting Keira's statement.

However, if the total number of tickets initially was less than 8, or if the statement doesn't specify the initial number of tickets, we cannot determine if Keira's statement is correct.

Therefore, without additional information, we cannot determine the accuracy of Keira's statement.

in order to know if Keira has two tickets left, we need to know the first number of tickets without that number there is no way to find the remainder

A bag contained 18 red marbles, 14 green marbles, and 20 blue marbles. A marble was randomly pulled, the color recorded, and then put back into the bag. This table above shows the results after 25 pulls.

What was the relative frequency of selecting a red or blue marble?

Red:8
Blue8
Green9

Answers

Number of red marbles pulled = 8

Number of blue marbles pulled = 8

Total marbles pulled = 25

Relative Frequency = Total Frequency / Total number of data values

Relative Frequency of red marble = 8/25

= 32%

Relative Frequency of blue marble = 8/25

= 32%

Learn more about Relative Frequency here

Visit —

https://brainly.com/question/3857836

Hope my answer helps you✌️

Mark BRAINLIEST

The first person is right

what is the equation of this line

Answers

Answer:

y=4x-6

Step-by-step explanation:

The equation of the line is y=mx+c where m is the slope and c is the intercept.

To find the slope, take two points $(x_{1},y_{1})$ and $(x_{2},y_{2})$ and use the equation $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$. Let's take (1,-2) and (2,2) as our two points:

$m=\frac{2-(-2)}{2-1}=\frac{4}{1}=4$

The y-intercept is where the line crosses the y-axis. We can see from the graph that the line crosses the y-axis at -6, therefore c= -6.

Now we can write the equation of this line: y=4x-6

Answer:

The answer is y=4x-6

I don't get it ???:/

Answers

Answer:

There's no mode

Step-by-step explanation:

The answer is the number that occurs more often for example: (6, 3,9,6,6,5,9,3) 6 occurs more often so that's the mode

no mode also have a great day please

solve the system by elimination.4x+8y=20 -4x+2y=30

Answers

4x+8y=20
-4x+8y=30
——————-
-4 and 4 cancel each other
16y=50
y= 25/8

4x+8y=20
4x+8(25/8)=20
4x+25=20
-25 -25
4x=-5
x= -5/4

(25/8 , -5/4)

Correct
25/8, -5,4
Would be your answer

using the ordered pairs (x, y) in the table

what is the proportionality constant or the rate of change?

Answers

The rate of change would be -2

It would be -2 just use a calculator.

(Proportional Relationships MC)

The table shows a proportional relationship.

Workout (hours) 1 2 3

Calories Burned 240 480 720

Create a description in words for the table.

A The number of calories burned is dependent on the number of hours working out. For a one-hour workout, there are 240 calories burned, and for a two-hour workout, there are 480 calories burned.

B The number of calories burned is dependent on the number of hours working out. For every 240-hour workout, there is 1 calorie burned, and for every 480-hour workout, there are 2 calories burned.

C The number of hours working out is dependent on the number of calories burned. For a one-hour workout, there are 240 calories burned, and for a two-hour workout, there are 480 calories burned.

D The number of hours working out is dependent on the number of calories burned. For every 240-hour workout, there is 1 calorie burned, and for every 480-hour workout, there are 2 calories burned.

Answers

Answer: A

the constant is 240. for every hour, the person burns 240 calories.
hope this helped :-)

A table of values of a linear function is shown below. Find the output when the input is n. Type your answer in the space provided.
I need the 5th output, I'll give brainiest

Answers

Answer:

the equation is f(x)4x+2

if the input is a generic number n, the output will be 4n+2

Step-by-step explanation:

Scott wanted to make note cards by cutting
pieces of paper in half. Before starting he
got two more pieces to use. When he was
done he had 14 half-pieces of paper. With
how many pieces did he start?

Answers

Well considering that he was making note cards and cutting them in half. It should be 7 but since the two extra it should be 9.

Giving brainliest!!!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

4 is considered the median which is whichever value is in the middle, 3 3 4 4 6

the range describes the distance between the smallest value and the largest value, thus the data spans 3in between the lowest value of 3 and the largest value of 6

Divide, write awswer in simplest form

2 and 7/9 divided by 2

Answers

Answer:

1.388

Step-by-step explanation:

2 7/9 / 2 =

7/9 = 0.777

2 7/9 = 2.777

2.777 / 2 = 1.388

Select all of the prime numbers from the list that can divide the number 14 exactly.
A. 2
B. 3
C. 5
D. 7
E. 11
F. 13
G. 17
H. 19
I. 23

Answers

Answer:3,5,7,11, and 13

Step-by-step explanation:i hope this helps

The correct answers are B C D E and F

Select all the equations that can represent the question: "How many groups of 45 are in 1?"

?·1=45

?·45=1

45÷1=?

1÷45=?

1·45=?

Answers

Answer:

if I to select I would have selected 45÷1and1÷45.

I would pick 45/1 and 1/45

Other Questions

how high is the pole from which the lamp fell freely if it hits the ground at a speed of 15 m/s How did the occupation zones of Berlin depicted on the map impact the city? (5 points)Group of answer choicesThe French, British, and American sector became West Berlin, and the Soviet sector became communist East Berlin.All of Berlin came under USSR rule when the Berlin Wall was removed.Three zones combined under a communist government, while one zone remained a free republic.The east and west sides of Berlin began a feud that lasted many years, and many human lives were lost to new war technology. during a disaster, a victim is complaining of difficulty breathing. which triage category would this victim fit? Additive inverse of 14+ (-6) los planetas exteriores son frios y los planetas interiores son mas? a major disadvantage of automated systems is... question 37 options: a) they substitute labor for capital investment b) they are less accurate than typical mechanized systems c) they typically depend on proprietary information technology networks d) they are slower than mechanized systems vegans, vegetarians, and those following a variety of plant-based diets can get enough iron from their diet from eating foods that contain iron along with vitamin-c-rich foods on a daily basis. Explain how the required interactions of the house and the senate would be required to move hr 5048 into law. Using the following image, solve for FG. E X-7 G F 11 FG = if you pour 3 gallons of paint into 8 cans how much will be in each can For the following electrochemical cell Co(s)|Co2 (aq, 0.0155 m)||ag + (aq, 3.50 m)|ag(s). What is the net cell equation? -6x=6 what is x Can you guys help me get the awnser I am very stuck this type of front has a very steep slope that helps intensify adiabatic cooling creating heavy precipitation Fifth disease is normally Group of answer choices allowed to resolve without treatment treated intensively with intravenous antibiotics treated with topical antibiotic ointments prevented through vaccination in this week's lab, you used hydrophobic interaction chromatography to isolate green fluorescent protein (gfp) from your transformed bacterial cells. knowing what you do about how the column interacts with proteins, and based on the results you saw in lab, do you think that any of your three collection tubes contained a pure sample of gfp? Jan hus is known for his criticism of (5 points) group of answer choices teaching about purgatory teaching about transubstantiation simony and the sale of indulgences protestantism and predestination. Carlos es 7 aos mayor que Jos. Dentro de tresaos la suma de sus edades es 21.Cules son sus edades ahora? When 20g of hydrogen gas will react with 20g of chlorine gas, what is the mass of hydrogen chloride formed? A crystalline solid of unknown origin forms an aqueous solution that conducts an electrical current. The solid has a high melting point and shatters when struck with a hammer. The solid is likely to be ______ _____ is a text-level element that displays text in a smaller font than the surrounding content.