What is the constant of proportionality? ​

Answer:

reflection in the y- axis

Step-by-step explanation:

Under a reflection in the y- axis

a point (x, y ) → (- x, y )

Note the x- coordinate is opposite in sign and the y- coordinate remains unchanged.

Thus

(- 4, - 6 ) → (4, - 6 )

(- 6, 4 ) → (6, 4 )

The endpoints have been reflected in the y- axis

We want to see which reflection we need to use to transform the given segment into the desired one.

The correct answer is:

"a reflection of the line segment across the y-axis"

First, we want to change the segment with endpoints at (-4, -6) and (-6, 4) to a segment with endpoints (4, -6) and (6, 4).

Note that the only thing that changes is the x-value of the endpoints, so we need to apply a reflection that only changes the x-value.

That reflection is a reflection across the y-axis.

For a general point (x, y), a reflection across the y-axis transforms the point to (-x, y).

Then the correct option is:

"a reflection of the line segment across the y-axis"

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Answer:

No

Step-by-step explanation:

Diameter= 180cm

Circumference of each table

= πD

= 180π cm

Each table can fit

= 180π ÷70

= 8 guests (nearest whole number)

Since there are 18 tables, total number of guests

= 8(18)

= 144 guests

Since there are only enough tables to sit 144 guests, there are not enough tables to fit 145 guests.

Note that we cannot take the sum of the circumference for 18 tables than divide by 70 to see how many guests can fit because a guest can only be sitted on one table.

If that was done,

Total circumference

= 180π(18)

= 10179 cm (5 s.f.)

Total number of people

= 10179 ÷70

= 145 people (3 s.f.)

This is incorrect.

Answer:

x = 10.75

Step-by-step explanation:

To find the value of x, we need to know the equation for the perimeter of a rectangle.  This equation is:

P = 2L + 2W

Where P is the perimeter, L is the length, and W is the width.

We are given P = 84, L = 3x -1 , and W = x.  Now we just plug these values in and solve for x.

P = 2L + 2W

84 = 2 ( 3x - 1 ) + 2 ( x )

84 = 6x - 2 + 2x

84 = 8x - 2

86 = 8x

86 / 8 = x

43 / 4 = x

(40 + 3) / 4 = x

10.75 = x

Hence, the value of x = 10.75.

Cheers.

Answer:

Step-by-step explanation:

1.

[tex]diameter = 6\:cm\\Radius = \:d/2\: =\: 6/2 = 3\:cm\\Height = 9\:cm\\\\Volume \:of\:a\:cone : \frac{1}{3} \pi r^2 h\\\\V = \frac{1}{3}\times 3.14 \times 3^2 \: \times 9\\\\V = \frac{1}{3} \times 3.14 \times 9 \times 9\\\\V = \frac{254.34}{3} \\\\Volume = 84.78cm^3[/tex]

2.

[tex]diameter =\: 6\:cm\\Radius= d/2 = 6/2 = 3\:cm\\Height = 9\:cm\\Volume = ?\\\\Volume \:of\:a \:cylinder = \pi r^2 h\\\\V = 3.14 \times 3^2 \times 9 \\\\V = 3.14 \times 9\times 9\\\\Volume = 254.34\:cm^3[/tex]

3.

The volume of a cone is   (one third) of the volume of a cylinder which has the same height as the cone and the same base radius as the cone.

So, you need 3 (three) volumes of cone to fill the cylinder.

Step-by-step explanation:

This is the answer.... Working shown

Answer:

Step-by-step explanation:

If point D is between C and R, then the vector CD = DR is true. Given the following parameter CD = 6x-8 meters, DR = 4 meters, to get the value of X we will equate both vector functions as shown;

6x-8 = 4

add 8 to both sides

6x-8+8 = 4+8

6x = 12

divide both sides by 6

6x/6 = 12/6

x = 2

Hence the value of x in metres is 2 metres.

Answer:

-1

Step-by-step explanation:

She walked down 2 flights, then up 3 flights. This would cause her to be 1 floor above her floor. So, she would have to walk down 1 flight (hence the negative in the -1) and she would be on her floor.

Answer:

-1

Step-by-step explanation:

Hi there! :)

Answer:

[tex]\huge\boxed{z = 8}[/tex]

-2(z - 9) = 2

Divide both sides by -2:

-2(z - 9) / (-2) = 2/ (-2)

z - 9 = -1

Add 9 to both sides:

z = -1 + 9

z = 8.

Answer:

it is correct they weigh the same

Step-by-step explanation:

Answer:

2667 tires

Step-by-step explanation:

One tire can generate:

Considering efficiency of 50%, one tire can produce:

10 homes require electricity, amount of:

How many tires can cover this demand?

Answer:

ikrrrrr sammeeeeeeeeeee

Answer:

Step-by-step explanation:

[tex]11-13x-7-2x=7\\\\\mathrm{Group\:like\:terms}\\-13x-2x+11-7=7\\\\\mathrm{Add\:similar\:elements:}\:-13x-2x=-15x\\-15x+11-7=7\\\\\mathrm{Add/Subtract\:the\:numbers:}\:11-7=4\\-15x+4=7\\\\\mathrm{Subtract\:}4\mathrm{\:from\:both\:sides}\\-15x+4-4=7-4\\\\Simplify\\-15x=3\\\\\mathrm{Divide\:both\:sides\:by\:}-15\\\frac{-15x}{-15}=\frac{3}{-15}\\\\Simplify\\x=-\frac{1}{5}[/tex]

Step-by-step explanation:

Hey, there!!

Let's solve it simply.

Given,

11 - 13x - 7 - 2x = 7

Simplify the like terms.

11 - 7 - 13x - 2x = 7

4 - 15x = 7.

shifting 4 in right side.

-15x =7-4

-15x = 3

Divide 3 by -15.

[tex]x = \frac{3 }{ - 15} [/tex]

Therefore, x = (-3/15) or (-1/5).

Hope it helps....

Answer:

[tex]g(f(2))=3[/tex]

Step-by-step explanation:

So we have:

[tex]f(x)=4x-3\text{ and } g(x)=\frac{2x-1}{3}[/tex]

And we want to solve for g(f(2)).

First, find f(2):

[tex]f(2)=4(2)-3[/tex]

Multiply:

[tex]f(2)=8-3[/tex]

Subtract:

[tex]f(2)=5[/tex]

Now, substitute this in for g(f(2)):

[tex]g(f(2))=g(5)[/tex]

Substitute this in for g(x):

[tex]g(5)=\frac{2(5)-1}{3}[/tex]

Multiply:

[tex]g(5)=\frac{10-1}{3}[/tex]

Subtract:

[tex]g(5)=\frac{9}{3}[/tex]

Divide:

[tex]g(5)=3[/tex]

Therefore:

[tex]g(f(2))=3[/tex]

Answer:

18km/h

Step-by-step explanation:

72/4=18

speed = distance/time

The change in price stock is $54.05.

First: work out the difference (increase or decrease) between the two numbers you are comparing.

Increase or decrease = New Number - Original Number.

initial price= $99.24

final price= $45.19

So, Change in stock = final price- initial price

                                  =$45.19  - $99.24

                                  =-$54.05

Hence, the price decrease in $54.05.

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#SPJ2

Answer = about 6,400 yards squared

Step-by-step explanation:

Answer:

175 i think please mark brainliest

Step-by-step explanation:

Answer:

It is a rational number

Step-by-step explanation:

3/8 = 0.375

The set of rational numbers is of measure zero on the real line, so it is "small" compared to the irrationals and the continuum.

Any rational number is trivially also an algebraic number.

Answer: 5.32

Step-by-step explanation:

8/25 as a decimal is 0.32. Add the fraction and whole number and you get 5.32

Answer:

5.32

Step-by-step explanation:

We know that the 5 in [tex]5 \frac{8}{25}[/tex] will just be a 5, so we can leave that be for now.

Since we have [tex]\frac{8}{25}[/tex], we want to turn it into a decimal.

A way of representing decimals is [tex]\frac{x}{100}[/tex], like [tex]\frac{69}{100}=0.69[/tex].

Therefore, we can convert  [tex]\frac{8}{25}[/tex] into hundredths and find the decimal that way.

[tex]\frac{8}{25} = \frac{x}{100}[/tex]

We can cross multiply to find the value of x.

[tex]100\cdot8=800\\\\800\div25=32[/tex]

This means that [tex]\frac{8}{25} = \frac{32}{100}[/tex]. This means the decimal is 0.32.

Adding the 5 to it, we get 5.32.

Hope this helped!

Answer:

P = 0.05

Step-by-step explanation:

E = P4πr²

2.50 = P4π(2)²

2.50 = P4π4

2.50 = P(50.265)

P = 0.05

Answer: C

Step-by-step explanation:

The distance between numbers is the difference between them.

5/2 and  4 7/8  

Using these pints the distance will be

5/2 - [tex]4\frac{7}{8}[/tex]   is the same as -5/2 - 4 7/8  

and is also not the same as 5/2 - (-4 7/8)

Answer:

C) None of the above

Step-by-step explanation:

The distance between 5/2 and 4 7/8 is 4 7/8-5/2= 39/8-20/8=19/8=2 3/8

A) |-5/2-4 7/8|=|-20/8-39/8|=|-59/8|=59/8= 7 3/8 SO NO

B) |5/2-(-4 7/8)|=|20/8+39/8|=|59/8|=59/8= 7 3/8 SO NO

C) None of the above = YES

Answer:

A loss of 2 yards

Step-by-step explanation:

2-5-3+4=-2

Answer:

The correct option is;

0.100100010000...

Step-by-step explanation:

An irrational number in mathematics are the subset of real numbers that are not rational numbers such as √2, π, e. As such it is not possible to express an irrational number as a ratio of two integers, or expressed in the form of a simple fraction.

The decimal portion of the expression of an irrational number are non periodic and they do not terminate. Transcendental, which are non algebraic, numbers are all irrational numbers

In the question, the number 0.100100010000... has non terminating non recurring decimals and is therefore an irrational number.

Answer:  The values of the variable can only be placed into categories.

Step-by-step explanation:

Type list of beverage sold is a categorical variable because the values of the variable can only be placed into categories.

A categorical variable, also referred to as nominal variable. is a variable which consist of two or more categories, this usually does not involve special ordering of the categories.

Answer:

Step-by-step explanation:

the total profit on 12 chairs:

12*250=3000₹

loss from selling 9 tables: 175*9=1575

total profit-total loss:

3000-1575=1425

the shopkeeper made 1425₹  in profit.

Answer:

1425 profit or 1575 loss

Step-by-step explanation:

250x12=3000 --> for the chairs

175x9=1575 --> for the tables

3000-1575=1425

You could say that he made 1425 profit or 1575 loss

Answer:

C

Subtract

Step-by-step explanation:

example

6-1=5

5+1=6

Answer:

0.56

Step-by-step explanation:

Answer:

$14.56

Step-by-step explanation:

It is 14.56 because:

$14 + 4% = $14.56

So, that is the answer. Hope this helps!