a recent survey determined the iq score of a random selection of residents identify the class midpoints

Answers

Answer 1

The class Midpoint =( Lower class limit + Upper class limit )/2

What is class  mid points?

The “midpoint” (or “class mark”) of each class can be calculated as: Midpoint = Lower class limit + Upper class limit /2 . The “relative frequency” of each class is the proportion of the data that falls in that class.

If we look at the question attached below then

Upper class limit = 69

Lower class limit =50

class midpoints= 50+69/2

class midpoint= 59.5

Hence, the Midpoint =( Lower class limit + Upper class limit )/2

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A Recent Survey Determined The Iq Score Of A Random Selection Of Residents Identify The Class Midpoints

Related Questions

1
In a group of tourists 34 are from U.S.A. 44 are from Japan, 64 are from
Germany and 18 are from South Africa. What percentage of the group are
from Japan?​

Answers

1. Calculate total tourists
34 (USA) + 44 (Japan) + 64 (Germany) + 18(S. Africa) = 160 Tourists.

To work out percentage, put the amount your trying to work out over the total amount. Then multiply by 100.

44/160 = 0.275 x 100 = 27.5%

The answer is 27.5%

solve the following equation 3+x upon 3=x upon 2​

Answers

[tex] \frac{3 + x}{3} = \frac{x}{2} [/tex]

[tex] \frac{3}{3} + \frac{x}{3} = \frac{x}{2} [/tex]

[tex]1 + \frac{x}{3} = \frac{x}{2} [/tex]

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

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

[tex]1 = \frac{x}{6} [/tex]

[tex]1 \times 6 = x[/tex]

[tex]6 = x[/tex]

A rectangular room is twice its breadth. It contains four windows of size 2 m x 1.75 m each and two doors of size 1 m x 3.5 m. If 24 pieces of tiles of size 2 mx 1.5 m each are required for tiling its floor and 41 pieces of 3D paper of size 3 m² each, are required for pasting on its 4 walls, find the height of the room. ​

Answers

The height of the room will be 4 meters

In the question, It is given that a room's four walls have to be covered by a 3-D paper of 3m² and 41 such papers are required for this. Also, we have been given that the room has 4 Windows of dimensions 2m * 1.75m each and 2 Doors of dimension 1m * 3.5m.

It is also stated that the tiling of the floor is done by tiles of dimension 2m * 1.5m each and 24 tiles are used for tiling.

Given that length is twice as breadth, Breadth b = x, and Length l = 2x

We know the Area of the rectangle: length * breadth

Area of tiles = 2 * 1.5 = 3m²

Area of 4 Windows = 2 * 1.75 *4 = 14m²

Area of 2 Doors = 2 * 1 * 3.5 = 7m²

On floor 24 tiles are used. So to calculate it we have : [tex]\frac{l*b}{3} = 24[/tex]

          =>  [tex]2x^{2} = 72[/tex]   => x = 6

We get x = 6. Now, Breadth = 6meters, and Length = 12meters

For covering Four walls of the room with sheets, We will find out the Curved Surface Area of the room:  2h(l+b), where h is the height of the room. We also have to exclude the area of Four Windows and Two Doors for sheets. And a total of 41 pieces of sheets are required to cover it with an area of 3m² each. So, the formula will be, [tex]\frac{2h(l+b)-14-7}{3} = 41[/tex]

          => [tex]\frac{2h(18) - 14 - 7}{3} = 41[/tex]    =>  36h = 144

         =>  h = 4 metres

Hence, the height of the room will be 4 meters.

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I need help with this question can you help me

Answers

Answer:

28.26ft

Step-by-step explanation:

A=πr^2

π*3^2=28.27433

28.26

suppose that verania and josimar are roommates that need to complete some household chores. vacuuming and washing dishes need to be done. they know from the last time they did these chores that it takes verania 2 hours to vacuum and 1 hour to wash dishes. it takes josimar 3 hours to vacuum and 2 hours to wash dishes. josimar says it does not matter which task each of them performs because verania is faster at both tasks.

Answers

It is wrong. Because Verania has a comparative advantage in washing dishes, she should wash dishes, and Josimar should vacuum.

Having an absolute advantage in both things does not mean that Verania has a Comparative advantage in both as well.

They should find out which activity they both have a comparative advantage in and focus on that. The activity that costs the least opportunity cost is the one they have a comparative advantage.

Verania

Opportunity cost of vacuuming = 2 / 1 = 2 hours of washing dishes

Opportunity cost of washing = 1/2 = 0.5 hours of vacuuming

Josimar

The opportunity cost of vacuuming = 3/2 = 1.5 hours of washing dishes

Opportunity cost of washing = 2/3 = 0.66 hours of vacuuming

Verania has a comparative advantage in washing dishes while Josimar has a comparative advantage in vacuuming.

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Find the missing side of this right triangle

Answers

Answer:

x ≈ 14.7

Step-by-step explanation:

use pythagorean therorem

a^2 + b^2 = c^2

c is hypotenuse and we know the hypotenuse is 21

a^2 + b^2 = c^2

x^2 + 15^2 = 21^2

x^2 + 225 = 441

x^2 = 216

x = √216

x ≈ 14.7

A line that includes the point (4, 2)has a slope of

1

2

. What

is it equations

slope -intercept

form?

Answers

Answer: y = 1/2x + 1

(4,2)

4=x1

2=y1

y = mx + b

2 = 1/2(4) + b

2 = 2 + b

b = 1

y = 1/2x + 1

given -2 1/3 x -5.15 determine the product.

Answers

The resulting product of the expression is 12.017

Product of fractions

Fractions are written as a ratio of two integers

Given the following expression

-2 1/3 x -5.15

Convert to improper fraction to have:

-7/3 * -515/100

3605/300

12.017

Hence the resulting product of the expression is 12.017

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Solve the system using the method of Your choice.

Answers

Answer:

x=3 y=6

Step-by-step explanation:

using elimination

Pls help I’m so bad dependent variables. I’ll give BRAINLIEST answer if you get it right. And pls number it like
1.
2.
3.

Answers

Answer:

Develop the concept of flat and solid shapes with your students. This unit has 12 shape activities that include whole group, small group and differentiated math ...

Step-by-step explanation:

I WILL GIVE BRAINILEST

which expression shows a sum of three terms?

3x
3 + x
3 + x + 9
x3

Answers

Answer:

the answer would be the third option. its the only thing that has 3 terms

Step-by-step explanation:

3+x+9

Answer:

3+x+9 is the sum of three terms

24 men in a room 1/2 wearing red shirt 1/3 wearing green shirt the rest are wearing blue shirt​

Answers

Answer:

12 red shirts

8 green shirts

4 blue shirts

Step-by-step explanation:

1/2 of the 24 people are wearing red shirts

Of means multiplication, so...

1/2 * 24 = 24/2 = 12, and do the same for the rest!

Answer:1/2 of 24= 24/2=12

             1/3 of 24= 24/3=8

             12+8=20

             24-20=4

Step-by-step explanation:

2) Hector scored 3/5 of the goals on soccer team. If his team scored a total of 35 goals during the season, how many goals did Hector score? Type your answer as a number only. Your answer ​

Answers

Answer:

21

Step-by-step explanation:

1/5 * 35 = 7

7*3 = 21

Which expression can be used to find the product of 320? (3 points)
0 (3 x 2) × (3 x 5)
(3 x 9) * (3 x 5)
(4 x 7) x (2 x 5)
(4 x 8) X (2 x 5)

Will be marked!

Answers

Answer:

( 4 x 8) x (2 x 5)

32 x 10

320

Yesnsidbejdidbdndkkd

a cube of 3cm lengths is put in a cube of 5cm lengths. How much volume is left?​

Answers

Sorry but there is no picture

Answer:

2cm

Step-by-step explanation:

because?

Solve: 8 + b/2 = 14 HELPPPPPPPPPPPPPPPPP

Answers

Answer:

b = 12

Step-by-step explanation:

subtract eight from both sides to leave the b variable on the left

b/2 = 14 - 8

b/2 = 6

multiply by 2 on both sides to leave b by itself

b = 6 * 2

b = 12

Answer:

12

Step-by-step explanation:

8 + b/2 = 14

b/2 = 14 -8

      = 6

b = 6 x 2

  = 12

Therefore b is 12. Hope this helps you and pls mark me as brainliest <3

Statement: 4x < 0
Which is greater? 1 or x

Answers

Answer:

1 is greater than x

Step-by-step explanation:

4x < 0

x<0-4

x< -4

x={ -5,-6,-7,-8,-9,-10,.............}

so {-5,-6,-7,-8,-9,-10,-.............} are lesser than 1

hence 1 >x 0r 1 is greater than x

Write the expression in simpliest form WILL GIIVE BRAINLIEST
3 (2x - 3)

Answers

Answer: The answer is 6x–9, please mark me as brainliest and have a wonderful weekend. :D

Step-by-step explanation:

Brainliest for whoever gets this right

Answers

Answer

14 degrees

Step-by-step explanation:

Fill in the blanks so that the equation has infinitely many solutions
5y + 6+ 7y = (blank) (6y + (blank))

Answers

solution

5y+7y+6= 12y+6

= 2(6y+3)

Answer:

2(6y + 3)

Step-by-step explanation:

for the equation to have infinitely many solutions, then both sides must be equal.

consider left side

5y + 6 + 7y ← collect like terms

= 12y + 6 ← factor out 2 from each term )

= 2(6y + 3)

then

5y + 6 + 7y = 2(6y + 3) ← has infinitely many solutions

8-3y=10
solve this equations​

Answers

Answer:

answer

8-10=3y

-2=3y

y= -2÷3

Step-by-step explanation:

hope it is helpful to you

Haddad purchases a new surround sound system with a store credit card. If Haddad pays the minimum monthly payment, he will have his balance paid off in 58 months. If he pays an additional $30.00 each month, he will have his balance paid off in 24 months. What percent of time will Haddad save by paying the extra $30.00 per month?
a)19%
b)24%
c)41%
d)59%

Answers

The percent of the time that Haddad will save by paying the extra $30.000 per month is d) 59%.

What is the percentage?

A percentage is a unit in 100, a part of a whole, or a ratio of one variable to the bigger variable.

Percentages show the quantity or value of the independent variable that is contained in a dependent variable.

Data and Calculations:

Total months to pay off a debt = 58 months

The additional amount required to reduce the payment period to 24 months = $30 per month

The savings in time = 59% (58 -24/58 x 100).

Thus, the percent of the time that Haddad will save by paying the extra $30.000 per month is d) 59%.

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Solve the System of Equations using Substitution or Elimination. State your final
answer as an ordered pair (x,y) *
-3x + 10y = -15
5x - 7y = -4

Answers

Answer:

(- 5, - 3 )

Step-by-step explanation:

Given the 2 equations

- 3x + 10y = - 15 → (1)

5x - 7y = - 4 → (2)

Multiplying (1) by 5 and (2) by 3 and adding the result, eliminates the x- term.

- 15x + 50y = - 75 → (3)

15x - 21y = - 12 → (4)

Add (3) and (4) term by term to eliminate x, that is

29y = - 87 ( divide both sides by 29 )

y = - 3

Substitute y = - 3 into either of the 2 equations and solve for x

Substituting into (1)

- 3x + 10(- 3) = - 15

- 3x - 30 = - 15 ( add 30 to both sides )

- 3x = 15 ( divide both sides by - 3 )

x = - 5

solution is (- 5, - 3 )

When is it better to compare data sets using the median instead of the
mean?

Answers

Answer:

when the data is skewed

When it’s a skew distribution

3) Write an ​equation​ with a slope of 6 and a y-intercept of 3:
4) Write an ​equation​ with a slope of 1.5 and a y-intercept of -5:

Answers

3. y=6x+3
4. y=1.5x-5
(i haven’t done algebra in while but i think those are the answers) hope it helps!

a grocery store clerk put only packages of flour tortillas and packages of corn tortillas on a shelf the ratio of the number of packages of corn tortillas to the total number of packages on the shelf was 7 to 16 which number could be the number of packages of flour tortillas the clerk put on the shelf?​

Answers

23 I think ya that sounds right

Answer:

1222222222

Step-by-step explanation:

Yuuma applied the steps below to find the product of (–10.2)(–16.4).

Step 1: (–10.2)(–16.4) = (–16.4)(–10.2)
Step 2: = (–16.4)(–10) + (–16.4)(–0.2)
Step 3: = ____________
Step 4: = 167.28

Which expression correctly fills in the blank in Step 3?
A (–164) + (–3.28)
B 164 – 3.28
C (–164) + 3.28
D 164 + 3.28

Answers

Answer:

D.)

Step-by-step explanation:

Answer:

DDDDDDDDD

Step-by-step explanation:

What is the slope of the line graph shown below?

Answers

Answer:

5/3

Step-by-step explanation:

Between the two points, the line goes up 5 points and to the right 3 points. The slope is rise over run, so in this case the rise is 5 and the run is 3.

This makes our slope:

5/3

How would you discover a mathematical relationship between corresponding terms that occur in two separate number sequences, and what can you say about those terms?

Explain answer for brainiest, 5 stars, plus a thanks!!!

Answers

Every 3rd term that occurs after the first term in the second pattern (that is, the 4th term, 7th term, 10th term, 13th term, 16th term, etc.), all represent the terms of the first pattern.

Both Patterns start at 0

Pattern 1 follows the rule, add 9.

Pattern 1 has terms, 0, 9, 18, 27, 36, 45, 54, 63, 72, 81....

Pattern 2 follows the rule, add 3.

Pattern 2 has terms, 0, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54...

It is evident that all of the terms of the first pattern will eventually occur in the second pattern at some regular points.

They both have the same first terms.

Both Patterns have terms that are all multiples of 3.

Every 3rd term that occurs after the first term in the second pattern (that is, the 4th term, 7th term, 10th term, 13th term, 16th term, etc.), all represent the terms of the first pattern.

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paper towels are 8$ and the sales tax is 8% what is the total cost of the paper towels?


A)$26
B)$26.50
C)$8.64
D)$2.00

Answers

Answer:

The answer is $8.64

You'll multiply 8% by $8 and you'll get 0.64 you'll add that to the total and get the answer

C)8.64 is the answer
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