Find the mean (average) of the data set below? 2/4, 18/5, 28/10, 5/20

Answers

Answer 1

the mean (average) of the data set below

2/4, 18/5, 28/10, 5/20

We are given with 4 fraction

to find mean , we add all the fractions and divide by 4

Lets add all the fractions

[tex]\frac{2}{4} + \frac{18}{5} + \frac{28}{10} + \frac{5}{20}[/tex]

Make the denominators same

LCM is 20

Try to get 20 in the denominator

[tex]\frac{2*5}{4*5} + \frac{18*4}{5*4} + \frac{28*2}{10*2} + \frac{5}{20}[/tex]

[tex]\frac{10}{20} + \frac{72}{20} + \frac{56}{20} + \frac{5}{20}[/tex]

[tex]\frac{143}{20}[/tex]

Now we divide by 4

[tex]\frac{\frac{143}{20}}{4}=\frac{143}{80}=1\frac{63}{80}[/tex]



Related Questions

Beach cruises prints brochures and fliers to advertise their dolphin watching tours. To print, the brochure requires three pages while the flier requires two. They are limited to 500 sheets of paper, but need to print at least 80 brochures and 100 fliers. Each brochure cost .10 to print and each flier costs .06 to print. How many of each should their print to minimize their cost?

Answers

Let x the number of brochures and y the number of fliers.

Optimizing function⇒ f(x,y) = 0.1 x + 0.06 y

Constraints:

x ≥ 80

y ≥ 100

3x + 2y ≤ 500

See the attached figure which represents the constraints.

From the attached figure:

The vertices of the feasible region are (80, 100), (80, 130) and (100, 100).

Substitute the points (80, 100), (80, 130) and (100, 100). in the function

f(x,y) = 0.1 x + 0.06 y

If (x,y) = (80, 100) ⇒ f(x,y) = 14

If (x,y) = (80, 130) ⇒ f(x,y) = 15.8

If (x,y) = (100, 100) ⇒ f(x,y) = 16

The minimum value 14 at (80, 100).

To minimize the cost, she would print 80 brochures and 100 fliers.

Final answer:

This is an optimization problem in mathematics that can be solved by linear programming. The constraints of the problem can be represented by inequalities, and the objective function (cost of printing) can be minimized by finding the optimal number of brochures and fliers to print.

Explanation:

This question is a type of optimization problem in mathematics, specifically a type of problem often found in linear programming. The objective is to minimize the cost of printing brochures and fliers.

First, set up the inequalities based on the constraints. Let x be the number of brochures and y be the number of fliers.

Since each brochure uses 3 sheets and each flier uses 2, and there are only 500 sheets available, the inequality is 3x + 2y <= 500.As they need to print at least 80 brochures and 100 fliers, we have two more inequalities: x >= 80 and y >= 100.

Then, we need to find the number of brochures and fliers to minimize the cost, which is 0.10x + 0.06y. You can solve this problem using methods of linear programming, such as graphing the feasible region and finding the minimum point.

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twice c is at least 19

Answers

The value of c is greater than or equal to the value 9.5

2c ≥ 19

We can treat this inequality like a standard algebraic equation.

Divide both sides by 2.

c ≥ 9.5

HELP ME PLEASE IM IN A PICKEL

Answers

The solution is (x,y)=(2,5)

(you can check by plugging 2 for x and 5 for y and both equations will work out)

At 7:00 a.m the temperature was 8 C what was the temperature at midnight if the temp was 10 lower?

Answers

8-10= -2°C at midnight

4(b-6)+19 simplify the expression

Answers

Step 1. Expand

4b - 24 + 19

Step 2. Collect like terms

4b + (-24 + 19)

Step 3. Simplify

4b - 5

The answer is 4b - 5 :)

(18x-44 )(8x-10) (13y-38) geometry

Answers

Simplifying

18x + -44 = 13y + -38

Reorder the terms:

-44 + 18x = 13y + -38

Reorder the terms:

-44 + 18x = -38 + 13y

Solving

-44 + 18x = -38 + 13y

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '44' to each side of the equation.

-44 + 44 + 18x = -38 + 44 + 13y

Combine like terms: -44 + 44 = 0

0 + 18x = -38 + 44 + 13y

18x = -38 + 44 + 13y

Combine like terms: -38 + 44 = 6

18x = 6 + 13y

Divide each side by '18'.

x = 0.3333333333 + 0.7222222222y

Simplifying

x = 0.3333333333 + 0.7222222222y

Final answer:

The provided expressions (18x-44)(8x-10)(13y-38) are polynomials in mathematics. However, without further context, it's challenging to give a useful solution or explanation.

Explanation:

Unfortunately, the question provided isn't clear and seems to be a collection of disconnected parts. The primary elements, (18x-44)(8x-10)(13y-38), represent three polynomials in mathematics. These polynomials might be part of equation to be solved, but the information provided is not sufficient for a conclusive answer.

Main Point

The expressions given above are polynomials grouped together. Polynomials are expressions comprising variables and coefficients, connected by the + or - operations. They can be included in various mathematical problems, from solving equations to geometry.

More about Polynomials

A polynomial of degree one is a linear polynomial, of degree two is a quadratic, degree three is a cubic, and so forth.

Though the given expression includes x and y variables, without further information or context, it's impossible to provide a detailed solution or explanation.

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Could someone tell me the answer pls Thankss alot

Answers

374/ 15= about 24.9 miles

The answer to this question is 24.9

Last night game at the arena in Cleveland was 251 seats short of being filled to capacity. how many people attended the game?

Answers

1. The attendance at the Cleveland arena was 20,311 people.

2. The largest arena can seat 1,800 more people than the smallest arena.

3. The estimated seating capacity difference between the Atlanta and Los Angeles arenas is 1,300.

4. The total attendance for the sold-out games is 37,124 people.

5. The combined capacity of the Cleveland and Boston arenas is 6,186 people greater than the biggest college basketball arena.

1. **Last night's game in Cleveland:**

  The attendance at the Cleveland arena last night was 20,562 - 251 = 20,311 people. This is because the arena was 251 seats short of being filled to its full capacity.

2. **Difference in seating capacities:**

  The difference in seating capacities between the largest (Los Angeles) and smallest (New Orleans) arenas is calculated by subtracting the smaller capacity from the larger one: 20,300 - 18,500 = 1,800. Therefore, the largest arena can accommodate 1,800 more people than the smallest arena.

3. **Estimate of seating capacity difference (Atlanta and Los Angeles):**

  The estimated difference in seating capacities between the Atlanta and Los Angeles arenas can be obtained by rounding the capacities to the nearest hundred, making the calculation easier. The rounded capacities are 20,300 and 19,000, resulting in an estimated difference of 1,300.

4. **Attendance at sold-out games:**

  The total attendance for the sold-out games in Boston and New Orleans is the sum of their individual capacities: 18,624 + 18,500 = 37,124 people.

5. **Combined capacity of Cleveland and Boston vs. biggest college arena:**

  The combined capacity of the Cleveland and Boston arenas is 20,562 + 18,624 = 39,186 people. Since this is greater than the capacity of the biggest college basketball arena (33,000), the combined capacity of the Cleveland and Boston arenas is 6,186 people greater.

In summary, the attendance at the Cleveland arena last night was 20,311 people. The largest arena can seat 1,800 more people than the smallest arena. The estimated seating capacity difference between the Atlanta and Los Angeles arenas is 1,300. The total attendance for the sold-out games in Boston and New Orleans is 37,124 people. The combined capacity of the Cleveland and Boston arenas is 6,186 people greater than the biggest college basketball arena.

The question probable maybe:

Use the table for 1-5.

Basketball Arena Seating Capacities
____________________________
City                     Capacity
____________________________
Cleveland             20562
Boston                  18624
Atlanta                   20300
New Orleans         18500
Los Angeles           18997

_____________________________

1. Last night game at the arena in Cleveland was 251 seats short of being filled to capacity. how many people attended the game?

2. How many more people can be seated in the largest arena than can be seated in the smallest arena?

3. Estimate the difference in the seating capacities of the Atlanta and Los Angeles arenas. Explain how you made your estimate.

4. There are two sold-out basketball games tonight. One is at the arena in Boston, and the other is at the arena in New Orleans. How many people are attending the two games?

5. Write Math > The biggest college basketball arena seats 33,000. Is the combined capacity of the Cleveland and Boston arenas greater than or less than the capacity of the biggest college arena? How much greater or less? Explain.

Write the following equation in slope intercept form: -2x + y = 9

A.) Y = -2x + 9

B.) Y = -2x – 9

C.) Y = 2x + 9

D.) Y = 2x – 9

Answers

Slope intercept form: y = mx + b

So

-2x + y = 9

Add 2x to both sides

-2x + y + 2x = 9 + 2x

Simplifying

y = 2x + 9

Answer

C.) Y = 2x + 9

answer is C forsure

Ben made a four digit number with the numbers 7,4,3,9. The number was smaller than 4 and bigger than 1. The 7 cannot go in the tenths place, and 9 must go to any place value to the right of the seven. What is the number?

Answers

3.479 is the answer


What is an equation of the line in slope intercept form m=2/7 and the y intercept is (0,-12).

Answers

The equation is y=mx+b


so it would be y=2/7(x)-12


[tex] y = \frac{2}{7} x - 12[/tex]

Which construction might this image result from?


A.
construction to copy a line segment
B.
construction of a perpendicular bisector
C.
construction of a perpendicular to a line through a given point on the line
D.
construction of a line parallel to an existing line
E.
construction of a perpendicular to a line through a given external point

Answers

Answer:

E

Step-by-step explanation:

Construction of a perpendicular to a line through a given point on the line might this image result from. Correct option is C.

A. Construction to copy a line segment: This construction involves using a straightedge and compass to create an identical copy of a given line segment.

B. Construction of a perpendicular bisector: This construction involves finding the perpendicular bisector of a given line segment, which is a line that intersects the segment at its midpoint and forms right angles with it.

C. Construction of a perpendicular to a line through a given point on the line: This construction involves drawing a line perpendicular to a given line through a specific point on that line.

D. Construction of a line parallel to an existing line: This construction involves drawing a line that is parallel to a given line and passes through a specific point not on the given line.

E. Construction of a perpendicular to a line through a given external point: This construction involves drawing a line perpendicular to a given line and passing through a point located outside the given line.

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Which expression is equivalent to the distance between -13 and -4 on a number line select all that apply

Answers

For this case we have:

We locate the given points on the negative axis of the x coordinate

We shadow the region between both points

The shaded region will be the difference or distance between both numbers.

Algebraically, the difference is given by:

[tex]| -13 - (- 4) | = | -9 | = 9\\[/tex]

Answer:

[tex]Distance = 9\\[/tex]

See attached image


Final answer:

The distance between -13 and -4 on a number line is the absolute value of their difference, which is 9 units.

Explanation:

The distance between two points on a number line is the absolute difference between those points. In this case, the points are -13 and -4. To calculate the distance, we subtract these values in such a way that we get a positive result.

So, we subtract -4 from -13, which is the same as adding 4 to 13, i.e.,: -13 - (-4) = -13 + 4 = -9.

However, distance cannot be negative, so we take the absolute value of -9, which is 9. Therefore, the distance between -13 and -4 on the number line is 9 units. None of the options provided seem to correctly represent this result.

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Paloma decided to divide 1,292 by 31 using partial quotients. She uses 30 as her first partial quotient. Which are the partial quotients Paloma should show in her work?
A) 30,10
B) 30,10,1
C) 10,10,10,1
D) 10,10,10,10,1

Answers

Answer:Partial quotients Paloma should show in her work are B) 30,10,1.


Step-by-step explanation:

Given : Paloma dividing 1292 (dividend) by 31 (divisor) using partial quotients.

so the easy multiples of 31 are as 31×2=62 ,31×3=93,31×10=310....so on

if she uses 30 as her first partial quotient then 31×30=930, so after subtracting 930 from 1292 we get 362 as new dividend then 31×10=310 is the easiest multiple of 31 so that 362-310=52 as new dividend ,then 31×1=31 subtracting this from 52 gives 52-31=21 which is the remainder.

Therefore, Partial quotients Paloma should show in her work are 30,10 and 1.

3/2(b + 1) = 3..........

Answers

b = - [tex]\frac{1}{2}[/tex]

multiply both sides by 2(b + 1) to eliminate the fraction

3 = 3× 2(b + 1)

3 = 6(b + 1) = 6b + 6  ( subtract 6 from both sides )

- 3 = 6b ( divide both sides by 6 )

b = - [tex]\frac{3}{6}[/tex] = - [tex]\frac{1}{2}[/tex]


If mADC and mBDC have a sum of 180, name the straight angle.

Answers

i am pretty sure it is mADC

What is the reason for each step in the solution of the equation? 19=5x−1 drag and drop the reasons into the boxes to correctly complete the table. 19=5x−1 20=5x 4=x combine like terms division property of equality addition property of equality commutative property given

Answers

19 = 5x - 1      Given

19 + 1 = 5x - 1 + 1

20 = 5x    Addition Property of Equality

20 : 5 = 5x : 5

4 = x    Division Property of Equality

The reason for each step in the solution of the equation are; Addition Property of Equality, Division Property of Equality.

What is a system of equations?

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

It is Given

19 = 5x - 1      

19 + 1 = 5x - 1 + 1

20 = 5x    (Addition Property of Equality)

20 : 5 = 5x : 5

4 = x   (Division Property of Equality)

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Complete the point-slope equation of the line (6,4) and (7,2).

y-2=________

Answers

y - 2 = - 2(x - 7)

the equation of a line in ' point- slope form ' is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

to calculate m use the gradient formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (6, 4 ) and (x₂, y₂ ) = (7, 2)

m = [tex]\frac{2-4}{7-6}[/tex] = -2

using m = - 2 and (a, b) = (7, 2)

y - 2 = - 2(x - 7 ) ← in point-slope form


mr. kork sold his car for 8,400. this was 200 more than two fifths of what he had paid for the car originally

Answers

If your question is, "how much had Mr. Kork paid for the car?"

(8,400-200)/.4=$20,500

Achristensen's answer is correct. Just want to add a little more explanation how to arrive at the result.

let x be the original price.

Rewrite the verbal question as an equation using x:

8400 = 200 + 2/5 * x

solve for x:

8400-200 = 2/5*x

5/2*8200 = x

x = 20500

The original price was $20,500

Subtract.

−7.2+4.5



Enter your answer, as a decimal, in the box.


Answers

the answer is -2.7

-7.2+4.5=-2.7

go from -7.2 to the positive side 4.5 numbers

what percent of 1620 dinner rolls is 85 dinner rolls

Answers

Answer:

it is 1905.88%

Step-by-step explanation:

We have,85%x X=1620

Or 85/100*x=1620

multiplying both sides by 100 and dividing both sides by 85

we have x = 1620 * 100/85

x=1905.88

if you are using a calculator ,simply enter 1620x100÷85,which will give you the answer

85 dinner rolls represent approximately 5.25% of 1620 dinner rolls. The calculation is done by dividing 85 by 1620 and then multiplying by 100.

To find what percent of 1620 dinner rolls is 85 dinner rolls, we use the basic formula of (part/whole) x 100. In this case, the 'part' is the 85 rolls, and the 'whole' is the 1620 rolls. So we calculate the percentage as follows:

(85 / 1620) x 100 = (0.05247) x 100 [10pt] [10pt]= 5.247%

Thus, 85 dinner rolls are approximately 5.25% of 1620 dinner rolls.

help mee plsss & thank youu

Answers

I believe the answer is 5

For this case, we have the following polynomial:

[tex]3x ^ 6yz + x ^ 4y ^ 2 + 2xz ^ 5-6x ^ 2y ^ 3-7y\\[/tex]

A term of the polynomial composed by:

[tex]3x ^ 6yz[/tex], where:

3: Represents the coefficient of the term

x, y, z: Represent the associated variables

6: Represents the exponent associated with the variable x. (y, z have exponent 1)

Thus, using the previous definition, it is observed that the expression has 5 terms.

Answer:

Option c

Write an equation that illustrates the identity property of multiplication and the zero property of multiplication

Answers

5*0 = 0*5 I think this works for both. Take this answer with a grain of salt and double check it, just in case.

Rob spent 25%, percent more time on his research project than he had planned. He spent an extra h
hours on the project.
Which of the following expressions could represent the number of hours Rob actually spent on the project?

Answers

Rob spent 25% extra percent on his project than the had planned.

Let us assume total number of hours spent x hours.

Given that he spent an extra h hours on the project

So, we could say 25% of x is h.

0.25 x = h.

Dividing both sides by 0.25.

We get 0.25h/0.25 = h/0.25.

x = h/0.25.

Let us convert 0.25 into fractions.

0.25 = 25/100 = 1/4.

Therefore,

x = h/1/4 = 4h.

Therefore, Rob planned 4h hours.

He spent h hours extra.

So, he spent total 4h+h = 5h hours total.

Therefore, 5h expressions could represent the number of hours Rob actually spent on the project.

Maddie has 2 times as many stickers on her notebook as meg together they have 15 stickers how many stickers are on Maddie’s notebook

Answers

x=meg's stickers.
15= x + 2x (meg's stickers + maddie's, which is two times Meg's.)
Simplify to 15 = 3x, solve by dividing both sides by 3. The answer is 5

what 1000×2099 math is really hard

Answers

Answer:

2,099,000

Step-by-step explanation:


the answer is 2,099,000

A motorboat traveling a distance of 225 miles in 5 hours while traveling with the current. Against the current, the same trip took 9 hours. Find the rate of the boat in calm water and rate of the current.
Rate of boat in mph and rate of current in mph

Answers

boat= 35mph

current=10mph

If e pieces of candy cost $2.10, how much would 4 pieces cost?

Answers

Answer:

$8.40

Step-by-step explanation:

Multiply 2.10 and 4. You get 8.4

4 pieces of candy would cost $8.40.


Explanation: It would cost $8.40, because $2.10 x 4 = $8.40.

Miles has 24 baseball cards he wants to display the cards in even rows and columns.draw two different arrays to show how miles could display his cards.label your drawings with a multiplication equation

Answers

Answer:

Total number of cards which have to arrange in even rows and Columns=24

 So, Even arrays are

   =6 rows and 4 columns

   =4 rows and 6 columns

  =12 rows and 2 columns

  =2 rows and 12 columns

The two different arrays to show how miles could display his cards will be (2, 12) and (4, 6).

What are permutation and combination?

A permutation is an act of arranging items or elements in the correct order. Combinations are a way of selecting items or pieces from a group of objects or sets when the order of the components is immaterial.

Miles has 24 baseball cards he wants to display the cards in even rows and columns.

The factor of the number 24 will be

24 = 2 x 2 x 2 x 3

Then the number of the combination will be given below.

Number of combination = 4 {(2, 12), (12, 2), (6, 4), (4, 6)}

The two different arrays to show how miles could display his cards will be (2, 12) and (4, 6).

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A truck driver is 2 hours into 1,346-Mile drive and has driven 125 Miles s far. Which of the following is the number of miles the truck driver still must cover to reach th halfway point to the trip ?

Answers

The answer is 1,121 miles
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