Mathematics Middle School

Help whats the answer

Answers

Answer 1

Answer:

Company B, since 40 > 25 and 40 > 35

Step-by-step explanation:

Company A:

With each window more, price increases by 25

Company B:

15, 55, 95, 135, 175

With each window, the price increases by 40

Company C:

y = 35x + 25

x = number of windows

If x increases by 1, the price increases by 35, therefore, this is the increase per window

Answer 2

Answer:

Step-by-step explanation:

Related Questions

pls help what is 3 3/10 divided by 1 4/7
I will give brig brain thing

Answers

Answer:

2.1

Step-by-step explanation:

Answer: 21/10, or 2.1 is your answer

Step-by-step explanation:

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.

Hong will run at most 23 miles this week. So far, he has run 15 miles. What are the possible numbers of additional miles he will run? Use t for the number of additional miles he will run.

Answers

23 >= 15 + t
23 - 15 >= t
8 >= t or t <= 8

Find the value for x.

Answers

Answer:

x = 19

Step-by-step explanation:

5x = 3x +38

that means 2x = 38

x = 19

Answer:

x=19

Step-by-step explanation:

(3x+38)°=5x°(corresponding angles)

3x°+38°=5x°

38°=5x°-3x°

38°=2x°

38°/2°=2X°/2°

19=x

Given the explicit formula, find the first four terms:
an = -400(1/2)n-1

A.
-400, -300, -200, -100

B.
-400, -399.5, -399, -398.5

C.
-400, 200, -100, 50

D.
-400, -200, -100, -50

Answers

Answer:

Step-by-step explanation:

Try C

I thing that the answer is c

$375+$137= blank what is the answer

Answers

Answer:

Step-by-step explanation:

375+137=512

375 + 137 is 512. Say you have 300 + 100 + 37 + 75. It would be easier to solve it that way.

Error Analysis: A store is instructed by corporate headquarters to put a markup of 67% on all items. An item costing $6 is displayed by the store manager at a selling price of $4. As an employee, you notice that this selling price is incorrect. Find the correct selling price. What was the manager's likely error?

Part 1: The correct selling price is (Round to the nearest dollar as needed.)
Part 2: What was the manager's likely error?

A. The manager set the selling price at the markup.
B. The manager subtracted the markup from the cost instead of adding it.
C. The manager set the selling price at the cost.
D. The manager added the markup to the cost instead of subtracting it.

Answers

Answer:

To find the correct selling price, we need to first find the cost of the item plus the markup. We can do this by multiplying the cost of the item by the markup percentage: $6 * 67% = $4.02. However, since the question asks us to round to the nearest dollar, we can round this number down to $4.

Therefore, the correct selling price is $4.

The manager's likely error was that they set the selling price at the cost (option C).

Step-by-step explanation:

The correct selling price is $10 and the manager set the selling price at the markup so option (A) is correct.

What is the percentage?

The percentage is defined as a given amount in every hundred. It is a fraction with 100 as the denominator percentage is represented by the one symbol %.

The percentage is also called the indicating hundredths. Thus, 2% is two-hundredth, which means 2%=2/100=0.02.

As per the given,

Cost of item = $6

Markup = 67%

67% of $6 ⇒ 0.67 x 6 = $4.02

Add the markup in the cost = $6 + $4.02 = $10.02

Round to nearest dollars = $10.2 ≈ $10.

The manager put $4 which is a markup instant of the selling price of $10.

Hence "The correct selling price is $10 and the manager set the selling price at the markup".

For more about the percentage,

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Middle school math problem.....

Answers

2% or 1/50
r= I/Pt
60/600(5)=1/50

She paid 2% more thanks mark as brainiliest

Please help!! Giving away 10 points 4 this‼️

Answers

Answer:

D) since -2 is to the left of 1, -2 < 1.

Step-by-step explanation:

The Answer is D)
U are welcome

A family of six goes to the local sandwich shop. All six people order the combination meal, which includes a drink and a sandwich for $6.99. One person thinks the total bill for the family of six will be around $30.00.

Answers

Answer:D

Step-by-step explanation:

6.99 x 6 = 41.94
And
6 x 7 = 42

So the most reasonable answer would be (D . No , a reasonable estimate is around 6 . $7 = $42)

That is the closest answer to $41.94

In the figure m1=(3x+12), m2=(3x+18), and m3=(7x+10). What is m3? Explain your method

Answers

Answer:

The solution is, the value of m<3 = 31.

What is simplification?

Simplify simply means to make it simple. In mathematics, simply or simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

here, we have,

given that,

in the figure, m<1= (3x+12)°, m<2= (3x+18)° and m<3= (7x+10)°.

now we get,

m<1= (3x+12)° is equal to m<3= (7x+10)°.

so, we have,

3x+12=7x+10

4x=2

x=1/2

m<3=7(3)+10=31

Hence, The solution is, the value of m<3 = 31.

Step-by-step explanation:

Pls ad me brainliest

William is a very busy professional DJ. Last year, he worked at 10-anniversary parties and 26 other events.
What is the probability that one of the events William worked on last year, selected at random, was an anniversary party?
Write your answer as a fraction or whole number.

Answers

Answer:

hello

Step-by-step explanation:

The required probability that William worked on last year was an anniversary party is 1/ 36.

As mentioned in the quesiton,
William is a very busy professional DJ. Last year, he worked at 10-anniversary parties and 26 other events.

What is probability?

Probability can be defined as the ratio of favorable outcomes to the total number of events.

Here,
Total sample space = 26 + 10 = 36
Number of favorable outcomes = 1
the probability that William worked on last year is was an anniversary party,
= Favorable outcome/sample space
= 1 / 36

Thus, the required probability that William worked last year is 1/ 36.

Learn more about probability here:

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Loren and Julie have different part time jobs after school. They are both paid at a constant rate of dollars per hour. The table below show Loren and Julie's total income (amount earned) for working a given amount of time.

Find the missing values in the Loren's tables above.
Separate answers by coma.Find the missing values in the Loren's tables above.

Answers

Answer:

Step-by-step explanation:

Julie's income for 16 hours is $192. Julie takes only 24 hours to earn $288. The rate is $12 for each hour.

Given

Loren and Julie have different part-time jobs after school.

They are both paid at a constant rate of dollars per hour.

The income of Julie is $36 in 3 hours.

For 1 hour, Julie earns $12.

Thus the rate of Julie is $12 per hour.

For the 16 hours, Julie's income will be.

Julie's income for 16 hours = 12 x 16

Julie's income for 16 hours = $192

Julie's income for 16 hours is $192.

Julie takes time to earn $228 will be

Thus, Julie takes only 24 hours to earn $288.

Loren earns $126 for 14 hours of work, and $144 for 16 hours of work. This is because she earns 9 dollars for every hour she works
Julie earns $72 for 6 hours of work, and $252 for 21 hours of work. This is because she gets paid 12 dollars for every hour she works

Spencer spent 4 hours doing chores over the weekend. If he spent 2/3
of an hour for each chore, how many chores did he do?

Answers

Answer:

6 chores

Step-by-step explanation:

ok so,

4 hours=240minutes

2/3of an hour= 60×2/3

=40 minutes

so since one chore needs 40 minutes, then:

40/240= 6

so in 240 minutes/4 hours, Spencer can do 6 chores.

2/3 of an hour is 40 minutes so he did 6 chores

the temperature is -27° Celsius. Give the absolute value and explain what it means.

Answers

Hello!,
The absolute value of -27 is 27. I think you are asking the definition of absolute value ; the magnitude of a real number without regard to its sign.
I hope this helps please mark me brainliest!

Enter your answer and show all the steps that you use to solve this problem in the space provided.

Factor the expression.

20k + 50

need answers now pls pls pls pls pls pls pls pls pls pls pls pls pls pls pls pls pls pls

Answers

10(2k +5)

When you factor you take the GCF of both numbers and place it outside of the parentheses

Solve using the order of operations. 3 × 4 ÷ 2 = 4 + 16 - 10 = (1 + 2) + 3 × 4 = Please help me!!!!! I am stuck on these equations.

Answers

Answer:

6 = 10 = 15

Step-by-step explanation: This is what i can do

$3\cdot \:4\div \:2=\\=12\div \:2=\\6\\\\4+16-10=10\\\\(1 + 2) + 3\times 4= \\=3+3\times \:4\\3+12 \\ =15\\\\\\$

Order of Operations

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

First one: 3×4÷2

Since multiplication and division have the same power, you do the equation in order.

3×4=12

12÷2=6

Second one: 4+16-10

Since addition and subtraction have the same power, you do the equation in order.

4+16=20

20-10=10

Third one: (1+2)+3×4

You have to do the parentheses first...

1+2=3

Now you have to do multiplication since multiplication goes first (according to PEMDAS)

3×4=12

Now you have to add (3) and (12)

3+12=15

Final Answers

First one: 6

Second one: 10

Third one: 15

6=10=15

♡ Hope this helped! ♡

❀ 0ranges ❀

Find the slope from the table of values.

Question 5 options:

2

-2

1/2

-1/2

Answers

The answer is 2 because for X it goes up by two and for Y it goes up by 4 the it’s rise over run so 4/2 which is 2

Jason has 56 pennies to stack equally in 8 piles.
Which equation can help you find 56 = 8?

Answers

Answer:

Step-by-step explanation:

56 divided by 8 . 56/8. 56/8 = 7

Answer:

theres 7pennnies in each stack

Step-by-step explanation:

56 divide by 8 = 7

HELP PLEASE I REALLY NEED HELP

Answers

-3.121875

First step is take it out of fractions and into decimals, they are easier to work with.

(0.5x1.125)x(2.66x3.33)x7.5

Then PEMDAS

Parentheses
0.625x-0.66x7.5

Then multiply

-0.41625x7.5

Answer
-3.121875

Hi how has your day been

HELP ASAP 53 POINTS
i need this very fast pleaseeee

Answers

Answer:

D and then D

Step-by-step explanation:

3.30-2.84=0.46

0.46/2=0.32 (because two years)

this is negative because it is a decrease

3.68-2.84= 0.84

0.84/2= 0.42, which is higher than all the others

Answer:

D & D
Explanation:

What is the range of possible sizes for side x?

Answers

Answer:

dunno hahhhaha

Step-by-step explanation:

Please solve k-3/4 = 10,
Z+5/7 = -3, and
9+t/12 = -3 with work too please

Answers

Answer:

Step-by-step explanation:

Add the 3/4 to cross it out on the left side and whatever you do to one side you do to the other side. so you add 3/4 or .75 on to 10 to get 10.75.

k-3/4=10

k=10.75

Subtract the 5/7 from the Z and subract it from -3 to get, -3.71.

Z+5/7=-3

Z=3.71

Subtract 9 from the left side and subtract 9 from the right side.

9+t/12=-3

t/12=-12

Then you would multiply by 12 from the left side and multiply by 12 from the right side.

t/12=-12

t=-144

A car salesperson earns 5.8% commission on every car sold. How much commission will the salesperson earn on the sale of a $28,400 car? Remember this is a money answer so 2 decimal places.

Answers

Answer:

$1647.20

Step-by-step explanation:

28400x 5.8% which equals .058 in decimal form which gives you $1647.20

The anwser is $1647.20

What is the surface area of the rectangular prism below if the rectangular base measures 6
feet by 8 feet and each face has a height of 12 feet?

A 216 square feet
B 336 square feet
C 432 square feet
D 576 square feet

Answers

Answer: 576 square feet

Step-by-step explanation:

576 because you have to do 6x8 then you get 48 which you multiply by the height (12) and you get 576

Which choice when added to | −5 + 7 | will equal zero?
| +5 − 7 | [ 2] − | −5 + 7 | [3] | −( −5 + 7 ) | [4] | 7 − 5 |
i know the anwser is two but how do you get it

i need it by 5/1/23 at 8pm

Answers

Answer:

[ 2] − | −5 + 7 |

Step-by-step explanation:

Since we know that | −5 + 7 | is an absolute value, we know that the answer will be positive no matter what.

Step 1) Solve. | −5 + 7 | = 2.

Step 2) Find which other absolute value is equal to -2.

After solving [2], − | −5 + 7 | = -2, we know that the answer is choice 2.

We know this because | −5 + 7 | = 2, however, since it is multiplied by (-), it becomes -2. And 2 + (-2) = 0

To solve this problem, we need to simplify each expression and see which one, when added to | −5 + 7 |, will equal zero.

We start by simplifying | −5 + 7 |:

| −5 + 7 | = | 2 | = 2

Now we can simplify each of the answer choices:

[2] | +5 − 7 | = | −2 | = 2
[3] | −( −5 + 7 ) | = | 2 | = 2
[4] | 7 − 5 | = | 2 | = 2

We see that only choice [2], when added to | −5 + 7 |, will equal zero:

2 + (−2) = 0

Therefore, the answer is [2] | +5 − 7 |.

Find the least common multiple LCM of 8 and 6 ?

Please help ASAP

Answers

Answer:

Step-by-step explanation:

8 * 3 = 24

6 * 4 = 24

Step 1: List a few multiples of 6 (6, 12, 18, 24, 30, 36, 42, . . . ) and 8 (8, 16, 24, 32, . . . . )

Step 2: The common multiples from the multiples of 6 and 8 are 24, 48, . . .

Step 3: The smallest common multiple of 6 and 8 is 24.

The least common multiple of 6 and 8 = 24.

10 customers entered a store over the course of 8 minutes. At what rate were the customers entering the store in minutes per customer ?
Explanation please

Answers

Answer:

1.2 people per minute

Step-by-step explanation:

because you need to divide 10 and 8 which equals 1.2

Answer:

1.25 per minute

Step-by-step explanation:

10 ÷ 8= 1.25

PLEASE HURRY NO WRONG ANSWERS FOR THIS ONE I CANT RISK LOSING MY POINTS!!!

You select a marble without looking and then put it back. If you do this 32,000 times, what is the best prediction possible for the number of times you will pick an orange marble?

LOOK AT THE IMAGE QUICKLYYY

Answers

Answer:

12,000 times

Step-by-step explanation:

The probability of selecting an orange marble in each individual selection is given by:

P(Orange) = Number of orange marbles / Total number of marbles

P(Orange) = 3 / 8 = 0.375

To determine the best prediction for the number of times you will pick an orange marble, we can multiply the probability of selecting an orange marble by the total number of selections:

Best prediction for the number of times you will pick an orange marble = P(Orange) * Total number of selections

Best prediction for the number of times you will pick an orange marble = 0.375 * 32,000

Best prediction for the number of times you will pick an orange marble = 12,000

Therefore, the corrected best prediction possible for the number of times you will pick an orange marble is also 12,000.

the answer is 12,000 times

A daycare is fencing in a grassy area to make a playground for kids. One sound of the playground will be directly along the building and is 40 feet in length.What will the width of the playground be if they have 170 feet of fencing to use?

Answers

The answer is 85 feet of fencing.

Answer:

45 feet width

Step-by-step explanation: 4 fences required as given as one is already along the side of building and says 'fencing in '

40 ft lengths = 40 *2 = 80ft playground perimeter of only the lengths and then the widths is looked for so we label 40 feet length on rectangle Then ; (( perimeter subtracted by 2 lengths) /the amount of widths) = ((170-80) /2) = 90/2 = 45 feet =width then label width 45 feet

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