Ali found out the number of rooms in each of 40 houses in a town. He used the information to complete the frequency table. Number of Rooms Frequency 4 4 5. 7 6 10 7 12 8 5 9 2 Calculate the mean number of rooms. ​

Answers

Answer 1

The mean number of rooms = 6

We know that the formula for the mean.

mean = sum of all observations / total number of observations

First we find thr total number of rooms, from given frequency table.

Number of Rooms        Frequency          Total number of rooms

           4                             4                              16

           5                             7                              35

           6                             10                            60

           7                             12                             84

           8                             5                              40

           9                             2                               18

So, the total number of rooms of 40 houses in a town would be,

16 + 35 + 60 + 84 + 40 + 18 = 253

And the total number of houses = 40

Using above formula of mean,  the mean number of rooms would be,

x = 253/40

x = 6.325

Therefore, on an average there are 6 rooms in each house.

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Related Questions

Is horizontal the Y?

Answers

Yes, if the value of y = 0 then it makes the horizontal line.

The term horizontal line is defined as one that goes from left to right.

And here we also know that they are parallel to the x –axis in the coordinate plane.

And the horizontal line has a slope of zero.

While we looking into the move along the right of the line, then it does not rise or fall at all.

Here we have to the that the following factors are also included in feature:

In as the horizontal line is parallel to the x-axis and it is parallel to the horizon.

Where as the horizontal line is a sleeping line and it is also defined as can be a sleeping, standing, or a slanting line.

Where the horizontal line is perpendicular to the y-axis.

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Stacy bought gas for her car . Gas cost$143.54 per liter. Stacy bought 12.4 liters. What was the total cost for Stacy gas express the answer as dollars and cents

Answers

Answer:

$1779.896

Step-by-step explanation:

From the above question

1 liter = $143.54

12.4 liters = $x

Cross Multiple

1 liter × $x = 12.4 liters × $143.54

$x = 12.4 liters × $143.54/1 liter

$x = $1779.896

Therefore, the total cost for Stacy gas in dollars and cents is $1779.896

Can someone please help me with this algebra

Answers

B
If you look at the label at the bottom you see that it tells you the number of books read, if you look at the number 5 and count the x’s you can see that 3 students read 5 books

Please answer correctly !!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

The correct answer is 0.96

The tables show the prices for ordering team jerseys from two different companies. You can use the information to write ratios showing the relationship between the cost and the corresponding number of jerseys.

Company A: 1/5=5 25/5=5 50/10=5 75/15=5.

These ratios are all equivalent

This relationship is proportional.


company B: 5/1=5 20/5=4 40/10=4 69/15=4.

These ratios are not all equivalent.

This relationship is not proportional.

Is the ratio constant or varying for company B? Explain

Answers

When we compare two ratios, they are said to be equivalent. To determine whether two or more ratios are equivalent, they can be compared to one another. For instance, the ratios 1:2 and 2:4 are equivalent.

Find the equivalent ratio by what method?

Equivalent ratios are two ratios with the same value. By multiplying or dividing the two amounts by the same number, you can determine the equivalent ratio. Finding equivalent fractions follows the same procedure.

A ratio formula is what?

The ratio formula can be used to represent a ratio as a fraction. The ratio formula is given as a:b = a/b for any two quantities, let's say a and b.

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prove if the given triangles are similar. list the supporting reasons​

Answers

Answer:

rreflextion across x the reflection across y

Side D and B are both congruent

Step-by-step explanation:

Twenty-four students brought their permission slips to attend the class field
trip to the local art museum. If this represented eight tenths of the class, how
many students are in the class? Use a bar diagram to solve arithmetically.
Then use an equation to solve algebraically.

Answers

Answer:

6 Students stayed in class

30 Students in Total

Step-by-step explanation:

Since there are 8/10 people on the trip, you divide the numerator(8) by 24

24 divided by 8 is 3. Also 3 x 8 is 24 so its proper

3 x 2 is 6 and 6 + 24 is 30

30 is 10/10 in this question so 6 is the answer for those who stayed in class and there is 30 in total

What steps would you do to solve n/7+3 greater than or equal to -4?

Answers

Answer:

the answer is n ≥ -49

here are the steps for solving-

the problem Is like  n/7+3 ≥ -4

1. First subtract 3 from both sides. After doing that, the inequation should be Like This:

n/7 ≥ -7

2. since 7 is in Division form, when it goes to RHS, You multiply.

So -7 times 7 Is -49

so the answer is n≥ -49

Item 4 Greg has a piece of rope 18 ft long. He wants to cut it into two pieces so that the longer piece is 2 ft less than 3 times the length of the shorter piece. How long will each piece of rope be

Answers

The length of the shortest piece is 5, and the longest piece is 13 feet by solving the equations.

The length of the shortest piece is 5, and the longest piece is 13 feet.

the solution is as follows,

Greg has a piece of rope that is 18 ft long.

He wants to cut it into two pieces so that the longer piece is 2 ft less than three times the length of the.

Let the length of the shorter piece be x.

And the length of the longer piece is 3x -2.

Greg has a piece of rope that is 18 ft long.

Then,

longest piece+ shorter piece = 18

x + 3x -2 = 18

4x - 2 =18

4x = 18+2

4x = 20

x= 20/4

x = 5.

Therefore,

The length of the shorter piece is x =5.

And the length of the longer piece = 3x -2 = 3(5)-2 = 15-2 = 13

Hence, the length of the shortest piece is 5, and the longest piece is 13 feet.

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(8.5 x 10^3) (2 x 10^5)

Answers

Answer:

Simplified = 1.7×109

1.7×109 = 185.3

17.349 because X equals 17.348 + 1

What is the degree of the polynomial 7x3 5x 4x5 2x2?

Answers

The degree of the polynomial as calculated from the given data7x³ + 5x + 4x⁵ + 2x² is 5 .

The given polynomial is  7x³ + 5x + 4x⁵ + 2x²

To find the degree of the polynomial we will write the equation down in the descending power of x

which is ,

4x⁵ + 7x³ + 2x² + 5x

Here , the highest power of the variable that appears with nonzero coefficient is 5.

So ,degree of the polynomial is said to be 5.

The hightest power of the variable in a polynomial is known as the degree of the polynomial. A polynomial expression is made up of constants and variables.

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How do you solve a math problem step by step?

Answers

Reading a math word problem through to the end will help you comprehend what you need to do in order to solve it. After reading it, you may determine which components of the issue that need to be resolved are the most important and which are not.

There are few basic steps to be followed while solving any mathematics problem:

1. Read and understand the problem.

2. Identify what is given and what is needed to solve the problem.

3. Choose an appropriate strategy to solve the problem.

4. Carry out the strategy.

5. Check your answer to make sure it is correct.

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HELPPPPPP PLEASEeeeeeeeeeeeeee

Answers

Answer:

x ≥ 2

Step-by-step explanation:

the solid circle at 2 indicates that x can equal 2

the arrow points to the right indicating values of x greater than 2 , then the inequality being represented by the number line is

x ≥ 2

Two numbers are consecutive positive multiples of 3. Three times the larger of the numbers is 7/10of 5 times the smaller. What are the numbers?

Answers

Answer:

18 and 21

Step-by-step explanation:

Let the smaller number = 3x

Let the larger number =  3x + 3

The three and the plus 3 insure that the numbers are multiples of 3 and are consecutive.

3* (3x + 3) = 7/10 * 5 (3x)       Multiply both sides by 10

30*(3x + 3) = 7 * 5 * 3x          Remove the brackets

90x + 90 = 7 * 5 * 3x             Combine the right

90x + 90 = 105x                    Subtract 90x from both sides.

-90x             -90x

           90 = 15x                     Divide by 15

x = 90/15

x = 6

Let's see if it works.

3*(3x + 3) = 3*(18 + 3) = 3 * 21 = 63

7/10 * 5 *3x = 7/10 * 5 * 3*6 = 630 / 10 = 63

A triangle has an area of 70 square kilometers and a height of 10 kilometers.what is the length of the base?

Answers

Answer:

14km

Step-by-step explanation:

aaaaaa. please help this is annoying AHAHAH

Answers

Answer:

Third one

−10×3−4

Step-by-step explanation:

-30-4

-34

Answer:

-10 · 3 - 4

Step-by-step explanation:

20 - (-3) + 51 ÷ (-3) = 20 + 3 + 51 ÷ (-3) = 20 + 3 - 17 = 6 no

-2 - (-8) + 7 + (-11) = -2 + 8 + 7 - 11 = 2 no

-10 · 3 - 4 = -30 - 4 = -34 yes!

-4 · (-3) + 22 = 12 + 22 = 34 no

the piece wise defined function f(x) is graphed below. What is the value of f(2)? PLS HELP THIS IS TIMED

Answers

Answer:

B

Step-by-step explanation:

We have to look at the full dot

i need help with this pleaseee

Answers

Answer:

answer: 1/64 of 1.6%

Step-by-step explanation:

The answer is this because the probability of the spinner landing on green is 2/8 now that multiplied by itself 3 times equals 1/64 so 1/64 is the probability hope that helps!

What is the pattern?

Answers

Divide by 2 then add 100, so we have 160->180, and x->500, subtract 100, multiply by 2, so 800 = x

please answer all 3 questions thank you~!!!!

Answers

Answer:

X of M is 6, Y of M is 4, Pair is (6,4)

Step-by-step explanation:

M = 6

M = 4

M (6,4)

The table shows a linear function. What is the rate of change?
Hours
Pay
1
18
1.5
23
2
28
2.5
33
3
38

Answers

Answer:

rate of change = 5

Step-by-step explanation:

the slope m gives the measure of the rate of change of the function

calculate the slope m using the slope formula

m = [tex]\frac{y_{2-y_{1} } }{x_{2-x_{1} } }[/tex]

with (x₁, y₁ ) = (3, 38) and (x₂, y₂ ) = (1, 18) ← 2 ordered pairs from the table

m = [tex]\frac{18-38}{1-3}[/tex] = [tex]\frac{-20}{-2}[/tex] = 5

then rate of change = 5

Please help me with my HW

Answers

Answer:

24d^5

Step-by-step explanation:

help please

A mirror is 8 inches by 15 inches. The distance between opposite corners of the mirror is ___ inches

Answers

Answer:

17

Step-by-step explanation:

8²+15²=289

√289=17

Remember,  Pythagorean theorem


pleaseee help me!

.

Answers

Perimeter=52 meters
Area=99m^2

Solve for x. Leave your answer in simplest radical form.
15 ft
x
HELP PLS ):

Answers

Answer:

11 = x

Step-by-step explanation:

A six-foot long ladder is leaning against a wall. The bottom of the ladder is 3 feet away from the wall. How high up the wall is the ladder

Answers

The six-foot long ladder is 3√5 feet high up the wall having 3 feet distance from bottom of the ladder.

How to find height ?

The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. In this case, the ladder is the hypotenuse, and the wall and the ground make up the other two sides.

The ladder is 6 feet long, and the bottom of the ladder is 3 feet away from the wall, so the triangle is a 3-4-5 right triangle, which means the wall is 3 feet high.

So, if we square the length of the ladder (6^2 = 36)

The length of the base (3^2 = 9),

and add them together, then take the square root of that, we get the height of the wall.

sqrt(36+9) = sqrt(45) = 3*sqrt(5)

so the ladder is 3√5 feet high up the wall.

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The mean of 4 5 6 7 8

Answers

Answer:

6

Step-by-step explanation:

The mean of 4 5 6 7 8

there are 5 numbers in sequence, you can solve at a glance by looking at the number in the middle, or add the numbers and divide them by their number, in any case the answer will be 6

4 5 6 7 8    (6 is central)

or

(4 + 5 + 6 + 7 + 8) : 5 =

30 : 5 =

6

Witch problem strategy would be the best to solve this problem?

Austin, Texas is two hours ahead of San Diego, California. If the time in
Austin is 1:00 P.M., what time is it in San Diego?

A) guess, check and revise
B) use a formula
C) work backwards
D) write an equation

Answers

Answer: C

Step-by-step explanation:

You would work backwards. So it would be 1:00-2 hours so the answer would be 11:00 A.M

Blair has a box of candy to sell. She has 4 chocolate bars, 4 fruit chews, 1 pack of bubble gum and 3 sour candies. If she chooses a piece of candy at random, how many possible outcome are there?

Answers

Answer:

12 possible outcomes

Step-by-step explanation:

The equation to find the possible outcomes is:

possible outcomes  x  total

We know she picks 1, so we have

1 x 12 = 12 possible outcomes

So, there are 12 possible outcomes

Write the coordinates of the vertices after a rotation 90°
counterclockwise around the origin.

Answers

Answer:

see explanation

Step-by-step explanation:

under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ) , then

C (1, 9 ) → C' (- 9, 1 )

D (4, 9 ) → D' (- 9, 4 )

E (0, 3 ) → E' (- 3, 0 )

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