1. There are only two numbers that are twice the sum of their
individual digits. One of them 0 and I am the other one. I am a
multiple of 9. Which number am I

Step-by-step explanation:

In mathematics, a combination is a selection of items from a set that has distinct members, such that the order of selection does not matter.

The number of combinations of n objects taken r at a time is determined by the following formula:.

nCr = n! / (n-r)! r!

n = total number of objects in the set

r = number of choosing objects from the set

so here , Jane has 8 toys and first she wants to take 2 toys ....

so , 8C2 = 8! / 6! 2! = 28 ways

so , she selected 2 toys ,,, After she wants to take 2 toys among 6 toys ....

so , 6C2 = 6! / 4! 2! = 15

next , picking 2 toys out of 4

So , 4C2 = 4! / 2! 2! = 6

next , 2C2 = 2! / 0! 2! = 1

total ways to pick toys = 28 × 15 × 6 × 1

= 2520 different ways ..

request :- Sorry if there are some mistakes in my English.

Answer: Statistical

Step-by-step explanation:

I think its statistical because its quantitative data, meaning you can count it.

Answer: Third Graph

Step-by-step explanation:

Given inequality

|x| + 1 > 2

Subtract 1 on both sides

|x| + 1 - 1 > 2 - 1

|x| > 1

Simplify the absolute value sign

x > 1 or x < -1

Apply the inequality to the graph

Since it is less than or greater than, the circle should be hollow

Since it is less than -1 or greater than 1, one line should point to the left and another should point to the right

Therefore, it should be the Third Graph

Answer:

D. 2

Step-by-step explanation:

soh cah toa rule

sine equals opposite over hypotenuse,

cosine equals adjacent over hypotenuse, and

tangent equals opposite over adjacent

csc is 1/sin which is hypotenuse over opposite

if csc is -√5/2 then

hypotenuse is -√5

opposite is 2

3rd quadrant on a graph is bottom left

both x and y values are negative

hypotenuse means its a triangle

pythagorean theorem

a^2 + b^2 = c^2

a^2 + 2^2 = (-√5)^2

a^2 + 4 = 5

a = 1 = adjacent

tangent equals opposite over adjacent

tan is 2 / 1 which is 2

third quadrant means it's still positive

because tan is positive in quadrant 3

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Answer:

-9

Step-by-step explanation:

To find the y intercept, substitute 0 in for x.

So, the equation looks like this:

[tex]y=6(0-\frac{1}{2} )(0+3)[/tex]

Now, just solve for y and you will get y = -9

The y-intercept of the graph of the equation is y = -9 which is the correct answer that would be an option (A).

The general equation of a line is y = mx + c

where m is the slope of the line and c is the intercept.

A linear equation is defined as an equation in which the highest power of the variable is always one.

Given equation as:

y = 6 (x - 1/2)(x+3)

To determine the y-intercept of the graph of the equation

Substitute the value x = 0 in the equation,

y = 6 (0 - 1/2)(0+3)

Apply the arithmetic operation and solve for y

y = -9

Hence, the y-intercept of the graph of the equation is y = -9.

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Answer:

  628.0 mm²

Step-by-step explanation:

The total surface area of the figure is the sum of the inside lateral area, the outside lateral area, and the area of the donut bases.

The lateral area of a cylinder is ...

  A = 2πrh

The total lateral area of the inside and outside cylinders is ...

  A = 2π(r1)h +2π(r2)h = 2π(r1 +r2)h

  A = 2(3.14)(3 mm +7 mm)(6 mm) = 376.8 mm²

The area of one donut base is the product of the centerline length and the width.

  A = πdw = (3.14)(7 mm +3 mm)(4 mm) = 125.6 mm²

The total surface area of the composite figure is the sum of its lateral area and the area of the two bases.

  surface area = 376.8 mm² +2×125.6 mm² = 628.0 mm²

__

Additional comment

The radius of the centerline of the base donut is the average of the inside and outside radii: half their sum. The diameter of the centerline circle is twice that average radius, so is equal to the sum of the inside and outside radii. This is the value we used above.

The width of the donut is the difference in the radii.

The product of the sum and difference is the same as the difference of the squares of the radii. That difference of squares would be what you have if you compute the overall area and subtract the inner area.

This number in expanded form 200 + 5 + 5/10 + 9/100  .

What is expanded form in math example?

Given  : 205.95 centimeters.

the number in a expanded form.

200 + 5 + 9/10 + 5/100

we have given 205.95 centimeters.

We can see 2 is at hundred place = 200.

0 is at tens place = 00.

5 is at ones place  = 5.

9 after decimal is at tenth place =  [tex]\frac{9}{10}[/tex].

5 is at hundredth place  = [tex]\frac{5}{100}[/tex] .

Therefore , Expanded form : 200 + 5 + 5/10 + 9/100 .

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The value placed in the box that makes the system of equation with infinitely many solution is 12.

An infinite solution has both sides equal. For example, 6x + 2y - 8 = 12x +4y - 16.  If we simplify the equation we will notice both sides are equal. This means the equation has an infinitely many solution.

Hence,

y = -2x + 4

Therefore,

6x + 3y = 12

divide the equation(ii) by 3

2x + y = 4

y = -2x + 4

Therefore, both equation are equal if the the box is filled with 12. This means for the value placed in the box that makes the system of equation with infinitely many solution is 12.

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There are 91 such ways in whih the volunteers can be assigned if two of them cannot be assigned from 14 volunteers.

Given that a school dance committee has 14 volunteers and each dance requires 3 volunteers at the door, 5 volunteers on the floor and 6 on floaters.

We are required to find the number of ways in which the volunteers can be assigned.

Combinations means finding the ways in which the things can be choosed to make a new thing or to do something else.

n[tex]C_{r}[/tex]=n!/r!(n-r)!

Number of ways in which the volunteers can be assigned is equal to the following:

Since 2 have not been assigned so left over volunteers are 14-2=12 volunteers.

Number of ways =14[tex]C_{12}[/tex]

=14!/12!(14-12)!

=14!/12!*2!

=14*13/2*1

=91 ways

Hence there are 91 such ways in whih the volunteers can be assigned if two of them cannot be assigned.

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The value of the firm is $50 million

The given parameters are:

EBIT = $10 million

Tax Rate, Tc = 40%

Unlevered cost of capital, RU = 12%

The value of the firm is calculated as:

Value = EBIT*(1 - Tc)/Ru

This gives

Value = 10 million *(1 - 40%)/12%

Evaluate the expression

Value = 50 million

Hence, the value of the firm is $50 million

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Answer:

45

Step-by-step explanation:

Simply start by listing out the numbers from smallest to largest.

We start out with the smallest number following this information being the number 10. The next are 21 and 20. The next are 32, 31, and 30. We can start to see a pattern. If the ten's digit is n, then there are n numbers within that ten-group that have a greater 10's digit than unit's digit. The largest ten-group (90 to 98) has 9 integers following the rules established. Thus, the number of 2-digit integers that have ten's digits greater than units digit is 1+2+3+...+9=45

Answer: sequence II, sequence I, sequence III

Answer:

Step-by-step explanation:

Supplementary angles are angles that can be summed up to give [tex]180^{o}[/tex], which is the value of the sum of angles on a line.

The required statements and reasons are given below:

Two or more lines are said to be parallel if there is no measure of the angle between them or the measure of the angle between them is [tex]180^{o}[/tex]. Thus the lines would never meet at any point even when extended to infinity.

While supplementary angles are angles that can be summed up to give [tex]180^{o}[/tex], which is the value of the sum of angles on a line.

               STATEMENTS                                        REASONS

1. < A and <B with AD ║BE, AC ║BF                   Given.

2. AD, AC, BE, BF                                                 Straight line.

3. <A ≅ <1                                                              Congruent property of

                                                                              vertically opposite angles.

4. AD + AC  ≅ DC                                                 Addition property of parts

   BE + BF  ≅ EF                                                   of a given line segment.                                    

5. <A + <B ≅ [tex]180^{o}[/tex]                                                 Addition property of

                                                                            supplementary angles.  

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The transformation of f(x) to g(x) would be 6 units upwards

To transform f(x) to g(x), the equation is; g(x) = f(x) + 6

We are told that f of x passes through 1, 3 and 3, 13, and g of x passes through negative 1, 3 and 1, 13.

f(x) passes through (1,3) and (3, 13).

Thus;

slope is; m =  (13 - 3) / (3 - 1) = 10/2 = 5

y-intercept is; b = y - mx

Thus;

b = 3 - 5*1 = -2

Equation of the line is;

f(x) = 5x - 2

g of x passes through negative 1, 3 and 1, 13. Thus, the slope is;

m = (13 - 3) / (1 + 1) = 10/2 = 5

y-intercept is; b = y - mx

Thus;

b = -1 - (5)(-1)

b = 4

Equation of the line is; g(x) = 5x + 4

part A: The transformation of f(x) to g(x) would be 6 units upwards

part B: k = 6

part C: To transform f(x) to g(x), the equation is;

g(x) = f(x) + k

g(x) = f(x) + 6

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Answer:

a) 52  

b)115

Step-by-step explanation:

When we make estimates of or draw conclusions about one or more characteristics of a population based upon the sample, we are using the process of statistical inference.

What is the purpose of statistical inferences ?

How is statistical inference used to draw conclusions?

Estimation and hypothesis testing are components of statistical inference (evaluating a notion about a population using a sample) (estimating the value or potential range of values of some characteristic of the population based on that of a sample).

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Answer: 3

Step-by-step explanation:

The missing number in the simplified ratio ?/4 is 3.

Here, we have to find the missing number in the simplified ratio ?/4, we need to determine the ratio of girls to boys in Mr. Stevenson's class.

Given that there are 6 girls and 8 boys in the class, the ratio of girls to boys can be expressed as:

Number of girls : Number of boys = 6 : 8

To simplify the ratio, we can divide both the number of girls and the number of boys by their greatest common divisor (GCD).

In this case, the GCD of 6 and 8 is 2.

Dividing both 6 and 8 by 2, we get:

Number of girls : Number of boys = 6/2 : 8/2 = 3 : 4

So, the simplified ratio of girls to boys is 3/4.

Therefore, the missing number in the simplified ratio ?/4 is 3.

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The relation that is a function is:

b. y = 2x² - 3x + 7

A relation is a function if each value of the input is mapped to only one value of the output.

Hence, when both x and y are squared, we have that [tex]x = \pm ay[/tex], hence it is not a function. This is the case for items a and c.

For item d, we have that the relation can be simplified as follows:

x = -y² + 3y

x = y(-y + 3)

The solution above, is associated to two values of y, hence it is also not a function. Then the function is given by:

b. y = 2x² - 3x + 7

In the solution, it can be seen that for each input x, only one value of y can be generated.

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The general solution of the given higher-order differential equation y''' − 8y'' − 9y' = 0 is ,    [tex]y = C_{1} + C_{2} e^{8x} + C_{3}e^{-x}[/tex]

Given higher-order differential equation = y''' − 8y'' − 9y' = 0

We have to find the general solution of the above differential equation

The auxiliary equation for the above differential equation will be :                             [tex]m^{3} - 8m^{2} - 9m = 0[/tex]

Solve the equation :- [tex]m^{3} - 8m^{2} -9m = 0[/tex]

                                  [tex]m ( m^{2} - 8m - 9 ) = 0[/tex]

                                  m ( m - 8 ) ( m + 1 ) = 0

                                  m = 0 , m = 8 , m = -1

Then the general solution will be like :

[tex]y = C_{1} e^{0x} + C_{2} e^{x} +C_{3}e^{-1x}[/tex]

The above solution can be written as:

[tex]y = C_{1} +C_{2} e^{8x} +C_{3} e^{-x}[/tex]

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The volume of helium inside the balloon decreased at a rate of 0.1 cubic feet per minute. The linear equation that represents the given data is y = -0.1x + 6 and its slope m = -0.1.

The equation of the line passing through the points (x1, y1) and (x2, y2) is

(y - y1) = m(x - x1).

Where m is the slope of the line and is calculated by

m = (y2 - y1)/(x2 - x1)

The given data in the table represents the volume of helium (cu ft), inside a balloon relative to the elapsed time in minutes.

x: 5, 10, 15, 20, 25, 30, 35, 40

y: 5.5, 5, 4.5, 4, 3.5, 3, 2.5, 2

From this table, consider two points (5, 5.5) and (10, 5)

So, the equation of the line is

y- y1 = m(x - x1)

Where slope m = (y2 - y1)/(x2 - x1)

⇒ m = (5 - 5.5)/(10 - 5)

⇒ m = -0.5/5

∴ m = -0.1

Thus, the equation is

y - 5.5 = -0.1(x - 5)

⇒ y - 5.5 = -0.1x + 0.5

⇒ y = -0.1x + 0.5 + 5.5

⇒ y = -0.1x + 6.0

∴ y = -0.1x + 6

Since the slope of the line is negative, the volume of the helium inside the balloon decreased at a rate of 0.1 cubic ft per minute.

So, option 2 is correct.

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The difference of the x-coordinate of point A and the x-coordinate of point B is 0

The coordinate of a point on an xy-plane is written in the form (x, y). The given figures are circles A and B where the circle A is greater than circle B.

The position of the dots in both sides are positioned at the centre and as such the coordinate point at the centre of both circle will be the origin (0, 0)

According to the question, we are to find the difference of the x-coordinate of point A and the x-coordinate of point B

x-coordinate of pint A = 0

x-coordinate of point B = 0

Take the difference

Difference = 0 - 0

Difference = 0

Hence the difference of the x-coordinate of point A and the x-coordinate of point B is 0

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Answer:

9

Step-by-step explanation:

listing the factors

27 : 1, 3, 9, 27

36 : 1, 2, 3, 4, 9, 12, 18, 36

the common factors are 1, 3, 9

the highest common factor is 9

Hi :)

The highest common factor is also known as the HCF

Let's find the HCF of [tex]\boldsymbol{27}[/tex] and [tex]\boldsymbol{36}[/tex].

[tex]\boldsymbol{Factors\:of\:27: 1, 3, 9, 27}[/tex]

[tex]\boldsymbol{Factors\:of\:36:1,2,3,4,6,9,12,18,36}[/tex]

HCF : [tex]\boldsymbol{9}[/tex]

[tex]\tt{Learn\:More;Work\;Harder}[/tex]

:)

Answer:$225,000 each

Step-by-step explanation: Assuming that they each get an equal share of the inheritance, there are 8 shares of the inheritance so we divided the $1.8m by 8 which equals $225,000 each.

Answer:

8

Step-by-step explanation:

This question is asking you to solve for the following system of equations, let x be width and y be height of the rectangle.

[tex]\left \{ {{x=y+5} \atop {x*y=24}} \right.[/tex]

Since the former is already equal to x lets set the second equation to x

[tex]x*y=24[/tex]

[tex]x=24/y[/tex]

Now we have the following system of equations:

[tex]\left \{ {{x=y+5} \atop {x=24/y}} \right.[/tex]

Now that the two equations are equal, we can solve for y:

[tex]y+5=24/y[/tex]

Divide both sides by y

[tex]y^2+5y=24[/tex]

Subtract 24 from the right side setting it to 0:

[tex]y^2+5y-24=0[/tex]

Solve for y using quadratic formula:

[tex]y=\frac{-5\pm \sqrt{5^2-4\cdot \:1\cdot \left(-24\right)}}{2\cdot \:1}[/tex]

[tex]y=3,-8[/tex]

Given the y-values lets plug them into our original equations to find the intersections.

[tex]x=3+5\\x=8[/tex]

Giving intersection vector (8,3)

[tex]x=-8+5\\x=-3[/tex]

Giving intersection vector (-3,-8)

Since both the width and length of the rectangle must be positive lets use the first vector (8,3) as our solution.

The x value being 8 means the width must be 8, y value being 3 the height must be 3, these variable correlate to our original definitions of making the x value equal to the width of the carpet and y value the height of the carpet.

Answer:The width is 3mm

Step-by-step explanation:

Length= 5mm + width

Let the width be represented by W

Area=24mm^2

Since area= length x width

24=(5+ W) x W

24=5W +[tex]W^{2}[/tex]

[tex]W^{2}[/tex] +5W-24=0

The factors are 8 and -3

[tex]W^{2}[/tex]+8w-3w-24=0

Factorise

W(w+8)-3(w+8)=0

(w-3)=0 or (w+8)=0

W=3 0r w= -8

The width cannot be negative.

Hence,W=3mm

Answer:

166

Step-by-step explanation:

If the four lines are tangent to the circle, know that:

NA = KA

AD = LD

LC = MC

MB = NB

The question stated that:

NA = 18 --> KA is also 18

BN = 11 --> MB is also 11

AD = 34 --> LD is also 34

BC = 31 --> MC is 20 (Because BC is BM + MC and BM is 11)

We can just add these numbers.

(18+18) + (11 + 11) + (20+20) + (34+34)

= 36 + 22 + 40 + 68

= 76 + 90

= 166

The perimeter of ABCD is 166.

Answer:

130

Step-by-step explanation:

if 2 tangent segments are drawn to a circle from the same external point then they are congruent, then

AN = AK and KD = DL and  MC = LC

then AN = AK = 18 and

KD = AD - AK = 34 - 18 = 16 , so KD = DL = 16

now BM = BN = 11 , then

AB = AN + BN = 18 + 11 = 29

MC = BC - BM = 31 - 11 = 20 and LC = MC = 20 , so

CD = LC + LD = 20 + 16 = 36

-----------------------------------------

Perimeter = AB + BC + CD + AD

                 =  29 + 31 + 36 + 34

                 = 130