Mathematics Middle School

Please Help!! Grade 7 Math!! K12!!

Answers

Answer 1

Answer:

See below

Step-by-step explanation:

To find the total cost we need to know whats fixed, and what's variable (changing)

Fixed: $14 handbag

Variable: $0.50 / earring

Set up your polynomial, rule of thumb, all variables get multiplied by x

Total cost = x($0.50/earring) + $14 handbag

Substitute 0,5,10, and 15 for x and see which one matches the answer choices

Answer 2

Set up your polynomial, rule of thumb, all variables get multiplied by x

Total cost = x($0.50/earring) + $14 handbag

Substitute 0,5,10, and 15 for x and see which one matches the answer choices

Step-by-step explanation:

Related Questions

*ANSWER IMMINENTLY GIVING 20 POINT BRAINIEST*
rewrite each linear expression by factoring out the coefficient of the variable
"-2x+7"
4.3x-12

Answers

Answer:

Its not 20 points lol

Step-by-step explanation:

let me know when its 20 and i will answer

4.3x - 12
=1/10 x(43x-120)

List some expressions that are not equivalent to:
-(8+2)/4

Answers

Answer:

expressions that are not equivalent to -(8+2)/4

✓-2.5

✓-5/2

Which equations are equivalent to -1/4(x)+3/4=12? Select all that apply.

Answers

Answer:

Step-by-step explanation:

-1/4 times x is the same as -4 time x over 1 because you multiply the numerator by a whole number and the denominator by 1

Answer:

b,c,e

Step-by-step explanation:

Find the slope of the line.

Slope =

Answers

Answer:

1/3

Step-by-step explanation:

You rise 1. You start at 2 and go up to 3. You run right 3. You go three spaces to the right.

Slope rise/run

1/3

Answer is:

1/3

I hope I've helped

please answer quickly

Answers

Answer:

37.5

Step-by-step explanation:

cosФ = $\frac{A}{H}$

cos(33°35') = $\frac{m}{45}$

m = 45 × cos(33°35')

m = 37.5 (1d.p.)

The answer is 37.5. Due to S o/h C a/h T o/a

Please help me with this question also

Answers

Answer:

84 and £621.6

Step-by-step explanation:

Please help I really need this answered and an explanation would also be nice if possible... Tysm!♡

Answers

Answer: x=16 degrees

Step-by-step explanation:

Let's assume that angle (7x-2) is angle P, and angle (4x+6) is angle Q. The lines are parallel, so angle P is correspondent to Angle F, meaning that they are equal.

So we know that a straight line is 180 degrees, so we can form an equation like this: Angle F+ Angle Q= 180 degrees.

Now let's add in the information:

7x-2+4x+6= 180 degrees

11x+ 4= 180

11x= 180-4

11x = 176

x= 16 degrees

Find the area of this circle. Use 3.14 for pie .

Answers

Answer:

8820.26 m^2

Step-by-step explanation:

The diameter is 106

The radius is 1/2 of the diameter

1/2 ( 106) = 53

The area of a circle is

A = pi r^2

= (3.14) ( 53)^2

= 8820.26 m^2

Sample Answer: Make a table with inputs showing the number of bottles of water and outputs showing the total cost of the water. Use 1, 2, 3, and 4 bottles for the inputs. Find the corresponding outputs. Plot the ordered pairs in the table of the form (input,output).

Which instructions did you include in your explanation? Check all that apply.
Identify the input.
Identify the output.
Create a table for four input values.
Plot the points from the table.

Answers

The instructions that you would include in your explanation are:

Identify the output.

Create a table for four input values.

Plot the points from the table.

The instructions to be included

In the given question, a series of instructions are provided. To properly explain your process, you have to explain how you got the output. There is no need of explaining the input as they are already provided.

Next, you will Show how you created the table and why you created it in that way. Finally, indicate how the points were plotted on the table. An explanation such as this will help anyone to follow through.

Learn more about ordered pairs here:

https://brainly.com/question/1528681

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Answer:1 to 2

2 to 4

Step-by-step explanation:

HELP PLS FIRST OONE TO ANSWER GETS BRAINLISDT

Answers

Answer:

She must buy 10 packages of cups and 1 packages of napkins

Step-by-step explanation:

Please help i’ll give brainliest!

For which set of data are the median and mode the same number?

A. 4, 5, 7, 7, 8, 10
B. 3, 5, 6, 8, 8, 9
C. 5, 5, 6, 8, 9, 10
D. 4, 5, 7, 8, 9, 9

Answers

Answer: A

Step-by-step explanation:

median: 7+7=14

14/2=7✅

mode: 7 shows up the most (twice)

I will have to say as I the first person that is on top of my comment the answer is A

Find the rule, and type the missing number in the sequence
96, 192, _, 384

Answers

Answer:

96, 192, 288, 384

Step-by-step:

First we find the difference between the first 2 digits so we subtract them both from each other

192-96

which is

=96

therefore its safe to say that +96 is the rule of the sequence

so I did 192+96 to find the missing number which gave me

=288

Hope this helped you- have a good day bro cya)

Answer:

288

Step-by-step explanation:

The equation m = 3b represents the time in minutes (m) it takes a chef to cook a certain number of bacon cheeseburgers (b).

Determine the constant of proportionality.

A. 3

B. 6

C. one third

D. 1

Answers

For the given equation:

m = 3b

The constant of proportionality is 3, so the correct option is A.

How to determine the constant of proportionality?

After a small search on the internet, I've found that this question asks for the constant of proportionality.

Remember that a proportional relation is of the form:

y = k*x

Where k is the constant of proportionality, and x and y are the variables.

Here the relation is:

m = 3*b

Where m and b are the variables, then the remaining coefficient is the constant of proportionality, which is 3.

In this way, we can see that the correct option is A.

Answer:

it is 3 since thats the only number there

help me its due today :')

Answers

Answer:

9 feet easy to solve this is answer

The length of the other leg would also be 15ft. The triangle is an equilateral triangle meaning that it is equal on each side.

1. Is the average change in population the same now as it was 50 years ago? Explain your answer.

2. Reflect on the interpretation of your data.

3. What should you consider when comparing population growth (or decline) over different intervals of time? Hint: What factors influence population growth or decline? Explain fully and provide examples where needed.

Answers

1. The average change in population is not the same now as it was 50 years ago. The population growth rate can vary greatly from year to year and decade to decade, and is influenced by a variety of factors such as birth and death rates, immigration, and emigration. Therefore, it is important to analyze the specific data for each time period to determine the average change in population.

2. When interpreting data on population growth or decline, it is important to consider the factors that influence population change and to analyze the data in the context of the specific time period being studied. It is also important to consider the accuracy and reliability of the data source, as well as any potential biases or limitations in the data.

3. When comparing population growth or decline over different intervals of time, it is important to consider a range of factors that can influence population change, such as birth and death rates, migration patterns, economic and environmental conditions, and government policies. For example, population growth rates in a country may be influenced by changes in healthcare access or advancements in technology that reduce infant mortality rates or increase life expectancy. In addition, migration patterns can greatly impact population growth rates, as some regions may experience large influxes of immigrants or emigrants at different periods in time. When comparing population data over different intervals of time, it is important to take into account these and other factors that may contribute to population growth or decline.

evaluate if a= -21 a/3+a=

Answers

the answer is -28
(sorry if i get this wrong)

-28
-21 divided by 3= -7
-7+-21=-28

HELP HURRYYYY If you spin the spinner below 150 times, which of the following outcomes are reasonable? Select all that apply. A) Lands on blue 60 times B) Lands on red 120 times C) Lands on yellow 90 times D) Lands on yellow 44 times

Answers

Answer \

c land on yellow 90 time

Answer:

all but B & D

Step-by-step explanation:

the sum of all data=314

314-120=194

164-44=150

I WAS WRONG THE ANSWERS WERE A AND D: DONT BELIEVE ME VIEW COMMENTS BELOW

A teacher standing on the stage is looking at his/her pupil who is standing on the ground. The height of the teacher and the pupil are 1.65 m and 1.5 m respectively. The angle of depression of the pupil from the teacher is 25° and the height of the stage is the same as the height of the pupil. Find the distance between the teacher and the pupil.

Answers

Sure, I can help you with that. The angle of depression is an angle formed between the horizontal line and the line of sight when an observer looks downwards at an object. It is used to measure the distance of the object from the ground or the observer.

In this problem, we can draw a right triangle ABC where A is the teacher, B is the pupil and C is the point on the ground below the teacher. The height of the stage is 1.5 m, so AC = 1.5 m + 1.5 m = 3 m. The angle of depression of the pupil from the teacher is 25°, so ∠BAC = 25°. We need to find BC, which is the distance between the teacher and the pupil.

Using trigonometry, we can write:

tan(25°) = AC/BC

BC = AC/tan(25°)

BC = 3/tan(25°)

BC ≈ 6.4 m

Therefore, the distance between the teacher and the pupil is about 6.4 m.

We can begin by drawing a diagram of the situation.

```
* Pupil
/|
/ |
/ | stage
/ |
/ |
/ |
/ |
/θ |
*--------* Teacher
```

From the diagram, we see that we have a right triangle with the teacher at the right angle, the distance between the teacher and the pupil as the hypotenuse, and the height difference between the teacher and the pupil as the opposite side. We can use the tangent function to relate the opposite and adjacent sides:

tan(25°) = opposite / adjacent

We want to solve for the adjacent side, which is the distance between the teacher and the pupil. Rearranging the equation, we get:

adjacent = opposite / tan(25°)

The opposite side is the height of the stage plus the height of the pupil:

opposite = 1.5 m + 1.5 m = 3 m

Substituting into the equation, we get:

adjacent = 3 m / tan(25°) ≈ 6.06 m

Therefore, the distance between the teacher and the pupil is approximately 6.06 meters.

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.

What is the volume of this shape? Will give brainliest. Middle school geometry
The answer is apparently 144 inches^3 but i don't know how to get that

Answers

Answer:

96in³

Step-by-step explanation:

Area of trapezium = ½ X (sum of parallel sides) X distance between them

= 1/2 (4 + 12) X 6

= 1/2 X 16 X 6

= 48.

volume = 2 X 48

= 96in³

The volume of a trapezoid is
(B1+B2) / 2 x height x length

B1 is 4
B2 is 12
Height is 6
Length is 2

Substitute that into formula

(4+12)/2 x 6 x 2

16/2 = 8

8x6x2 = 96

Volume of this shape is
96 inches cubed

I need help, please quickly

Answers

Answer: The ratio is 18:3

Step-by-step explanation:

Answer: 6 to 1

Step-by-step explanation:

A ratio refers to a fraction. In this case the question asks how many players to coaches there are.

The word "to" means that is where the fraction bar goes.

Players/Coaches

There are 18 players and 3 coaches.

18/3

18 can be divided by 3, 6 times so the fraction can be simplified to

6/1 meaning there are 6 players for every coach.

Joanna draws a scale model of a rectangular table for a carpenter to build.
On her drawing, 3/4 of an inch represents 1 foot. In the drawing, the table is 7 1/2 inches long. How long, in feet, will the table be when the carpenter builds it?

A. 4 2/3 ft
B. 2 5/8 ft
C. 5 5/8 ft
D. 10 ft

Answers

Answer:

Step-by-step explanation:

just multiply the three over four inches with seven and a half to get the accurate measurements

the answer to this is D

Evander would like to buy a new hockey stick. He earns $15 time he cuts the grass in his neighborhood. Because of his busy schedule, he can cut grass on Saturdays and Sundays. Evander is responsible for paying $10/week toward his cell phone bill. He also enjoys chocolate and has a $2 bar least twice weekly. Every time he cuts two lawns, he has to fill up the lawnmower with $5 worth of gas.

If he cuts one lawn each day on the weekend, how much money will he have after he has paid for gas, chocolate, and his cell phone?

Evander would like the same stick that Alexander Ovechkin uses. The regular price is $229.99 (including taxes). How long will it take Evander to save enough money to buy the stick?

When could Evander save enough for the stick if he stopped eating chocolate bars?

When could Evander save enough for the stick if he was able to cut another lawn on Wednesday nights AND stopped eating chocolate?

Answers

Answer/Step-by-step explanation:

If he cuts one lawn each day on the weekend, how much money will he have after he has paid for gas, chocolate, and his cell phone?

earns - 30 pays - $10pb $2b $5(this is for the 2 days)

SO he gets 30 but spends 19,

Meaning he gets $11 proffit.

30-19 = $11

Evander would like the same stick that Alexander Ovechkin uses. The regular price is $229.99 (including taxes). How long will it take Evander to save enough money to buy the stick?

He makes $11 every week. so 229.99/11 = 20.9, so it will take him 21 weeks to get it.

When could Evander save enough for the stick if he stopped eating chocolate bars?

Ok so he would be getting 2 dollars more so that would make it $13. So 229.99/13 = 17.69, meaning it will take 18 weeks to get it.

-1= p - 1
Can you help me?

Answers

Answer: p=0

Step-by-step explanation: Hope this help :D

Let's solve your equation step-by-step.

−1=p−1

Step 1: Flip the equation.

p−1=−1

Step 2: Add 1 to both sides.

p−1+1=−1+1

p=0

Answer:

If I did the math right p = 0 so -1 = 0 - 1

Step-by-step explanation:

The only way to get -1 by subtracting a number by 1 you would need 0.

0 - 1 = -1

Hope I helped!!!

Need help ASAP please

Answers

The volume of this pyramid would be 630

The volume of a rectangular pyramid is found using the formula Volume = 1/3 × base area × height

Kalesha is purchasing a laptop. The original price of the laptop is $900. The store is offering 10% off on all computers. Kalesha has a $100 gift card. How should Kalesha determine the amount she will pay for her computer? Subtract $100, then take 10% off. Take 10% off, then subtract $100.

Answers

Answer:

The correct answer is to take 10% off and then subtract 100.

Step-by-step explanation:

Kalesha will pay $710. Which function represents the price of any computer after a 10% discount? p(x)=0.9x

Answer:

Kalesha should determine the amount she will pay for her computer by First Taking 10% off, then subtracting $100.

Explanation:

Kalesha will pay $710. Which function represents the price of any computer after a 10% discount? p(x)=0.9x

What is an example of a word problem?

Word problems commonly include mathematical modeling questions, where data and information about a certain system are given and a student is required to develop a model. For example, Jane had $5.00, then spent $2.00. How much does she have now?

What are the 3 types of word problems?

You can use three common types of word problems -- part-part-whole, separate and join and multiply and divide -- for everything from counting pennies to calculating a tip.

Learn more about Word problems at https://brainly.com/question/13818690

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20 poits given pols help answer both pls show work