The polygons are similar. Find the value of x.
2-
Р
X
X
20
21
14
5
Q 12 R
L
18
K

Answer:

What is the question?

Step-by-step explanation:

You did not attach a file, and all you posted was a statement, not a question. Please edit the question or I cannot help. Sorry......

Answer:

60

Step-by-step explanation:

m(ADB) + m(BDC) = 90°

(3x+9) + (2x -4) = 90°

5x + 5 = 90°

5x = 85

5x/5 = 85/5

x = 17

m(ADB) = 3x + 9

3.17 + 9 = 51 + 9 = 60

Hope this helps ^-^

Answer: 60°

Step-by-step explanation:

Looking at the figure, we know that the angles add up to 90°. We add both equations and solve for x.

3x+9+2x-4=90          [combine like terms]

5x+5=90                    [subtract both sides by 5]

5x=85                        [divide both sides by 5]

x=17

Now that we know x, we can plug it into ADB to find the angle.

3(17)+9                      [multiply]

51+9                          [add]

60

Now, we know that ADB is 60°.

Answer:

y = − x + 9

Step-by-step explanation:

Plz Mark brainliest!

Answer:

The answer would be y=-x+9

Step-by-step explanation:

Fill in - and then 9

"Important put in negative symbol without 1 just negative symbol".

Answer:

1. 3.46410162

2. 7.07106781

3. 0.08641975

Answer:

Step-by-step explanation:

2X=24-4 x=20/2 x=10

Answer:

Amy had 4 erasers. Brianna gave her x more erasers which doubled the amount of erasers she had. How many erasers does Amy have in total?

Answer:

x = 45°

Step-by-step explanation:

the triangle has 2 congruent sides and is therefore isosceles with the base angles being congruent, both x

the sum of the 3 angles = 180° , then

x + x + 90° = 180° ( subtract 90° from both sides )

2x = 90° ( divide both sides by 2 )

x = 45°

Answer:

ok bet

Step-by-step explanation:

how would u like me to answer it pls

Answer:

12

Step-by-step explanation:

it will be 12 because if you see the length were number 12 is it's the same as the other side

Answer:

113.0 in

Step-by-step explanation:

[tex]a = \pi \: r {}^{2} \\ \\ = 3.14( \frac{12}{2} ) {}^{2} \\ \\ a = 113.0 \: in {}^{2} [/tex]

Answer:

X = 9.4868

Step-by-step explanation:

Use the pythagorean theorem

a squared plus b squared equals c squared

in this case c equals x

A&b are the side and base length of a right triangle

The quadratic equations that have real roots are [tex]-2x^2+3x+4 = 0[/tex] and  [tex]2x^2+x-6 = 0[/tex].

The value of a discriminant of a quadratic equation shows how many roots f(x) have. If the value of the discriminant is greater than 0 then the quadratic equation has real and distinct roots and if the value of the discriminant is equal to 0, then the quadratic equation has real and same roots. In case the value of the discriminant is less than zero then the quadratic equation will have no real roots.

In order to know if the quadratic equation has real roots or not, we need to find the discriminant of the given quadratic equations,

A.) [tex]-x^2+2x -6 = 0[/tex]

Here, a= -1, b=2 and c=-6

[tex]D = b^2 -4ac[/tex]

[tex]D = 4 -24\\D = -20[/tex]

As the value of the discriminant is negative it will not have real roots.

B.) [tex]-2x^2+3x+4 = 0[/tex]

Here, a= -2, b=3 and c=4

[tex]D = b^2 -4ac[/tex]

[tex]D = 9 +32\\D = 41[/tex]

As the value of the discriminant is positive it will have real roots.

C.) [tex]2x^2+x-6 = 0[/tex]

Here, a=2, b=1 and c=-6

[tex]D = b^2 -4ac[/tex]

[tex]D = 1 +48\\D =49[/tex]

As the value of the discriminant is positive it will have real roots.

A.) [tex]2x^2 -x+3 = 0[/tex]

Here, a=2, b=-1 and c=3

[tex]D = b^2 -4ac[/tex]

[tex]D = 1-24\\D = -23[/tex]

As the value of the discriminant is negative it will not have real roots.

Learn more about Discriminant:

https://brainly.com/question/15884086

9514 1404 393

Answer:

Step-by-step explanation:

Plot the given points on the graph. Those that are on the (solid) boundary line or in the shaded area are solutions. Those in the white space are not solutions.

Answer:

B 452.16 cm^3

Step-by-step explanation:

the volume of the cylinder is 16π x 9, and if we replace π with 3.14, the answer will be 452.16 cm^3

Step-by-step explanation:

[tex]v = \pi \: r {}^{2} h[/tex]

v = ?

r = 4 cm

h = 9 cm

[tex]v = \frac{22}{7} \times 4 {}^{2} \times 9[/tex]

[tex]v = \frac{22}{7} \times 16 \times 9[/tex]

[tex]v = \frac{3168}{7} [/tex]

[tex]v = 452.57 \: cm {}^{3} [/tex]

if this helped pls give brainliest

width x

lenght : x + 11

area = x * (x+11) = 60 cm²

x² + 11x - 60 = 0

Δ = 11² - 4*1*(-60) = 121 + 240 = 361 = 19²

x' = (-11 - 19) / 2 = not possible

x" = (-11 + 19) / 2 = 4

witdh = 4

lenght = 4+11 = 15

Answer:

(True or False) The inequality |x + 1| < 0 has no solution.

Solution

The absolute value of a real expression is either positive or equal to zero. Therefore there is no value of x that makes |x + 1| negative and therefore |x + 1| < 0 is never true and the statement "The inequality |x + 1| < 0 has no solution" is TRUE.

Answer:

false

2,x2+x-3

2

x

2

−

x

−

3

=

0

Factor by grouping.

Tap for more steps...

(

x

+

1

)

(

2

x

−

3

)

=

0

If any individual factor on the left side of the equation is equal to  

0

, the entire expression will be equal to  

0

.

x

+

1

=

0

2

x

−

3

=

0

Set the first factor equal to  

0

and solve.

Tap for more steps...

x

=

−

1

Set the next factor equal to  

0

and solve.

Tap for more steps...

x

=

3

2

The final solution is all the values that make  

(

x

+

1

)

(

2

x

−

3

)

=

0

true.

x

=

−

1

,

3

2

Step-by-step explanation:

Answer:

x=

15

7

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

8x−

6

2

=x+12

8x+−3=x+12

8x−3=x+12

Step 2: Subtract x from both sides.

8x−3−x=x+12−x

7x−3=12

Step 3: Add 3 to both sides.

7x−3+3=12+3

7x=15

Step 4: Divide both sides by 7.

7x

7

=

15

7

x=

15

7

Your answer would be ten times the ingredients it would take to make ONE pancake.

What kind of question is this?

Answer:

4 1/100

Step-by-step explanation:

Answer:

4 1/100

Step-by-step explanation:

Convert the decimal number to a fraction by placing the decimal number over a power of ten. Since there are  2   numbers to the right of the decimal point, place the decimal number over  10 ^2  ( 100 ) . Next, add the whole number to the left of the decimal.

Answer:

Cherokees were forced to leave their homes. There are usually peaceful, but this angered them, so naturally, they fought back and that's why the hostilities escalated.

Step-by-step explanation:

Using the relation between velocity, distance and time, it is found that the trip took 2 hours.

Velocity is distance divided by time, that is:

[tex]v = \frac{d}{t}[/tex]

On the first part of the trip, a time of t was taken, with an average speed of 60 km/hour, hence:

[tex]60 = \frac{d}{t}[/tex]

d = 60t

On the second part, a time of t + 1 was taken, with an average speed of 40 km/hour, hence:

[tex]40 = \frac{d}{t+1}[/tex]

d = 40(t + 1).

Since the distance is equal for both parts, we can equal the equations and find the time.

60t = 40t + 40

20t = 40

t = 2.

The trip took 2 hours.

More can be learned about the relation between velocity, distance and time at https://brainly.com/question/24316569

Answer:

Number  = 15.

Step-by-step explanation:

Given : If you multiply a number by 3 and then subtract 5, you will get 40.

To find : what is the number.

Solution : We have given if you multiply a number by 3 and then subtract 5, you will get 40.

According to question :

Let the number =  x

Multiply is with 3 = 3x

Subtract 5 from it we get 40 .

3x -5 = 40

On adding both sides by 5

3x = 45 .

On dividing both sides by 3

x =  15.

Therefore, Number  = 15.

Answer:

15

Step-by-step explanation:

3×y-5=40

3y-5=40

3y=40+5

3y=45

y=45÷3

y=15

Answer:

1485

Step-by-step explanation:

sorry if im wrong

Answer:

dont have question

Step-by-step explanation:

Answer:

161.557- so the second one

Step-by-step explanation:

Answer:

3(x-7) – x=2x-21 ( the equation)

--> infinitely many solutions

Step-by-step explanation:

The solution of the equation is infinitely many solutions, the correct option is C.

In mathematics, a set of simultaneous equations, also known as a system of equations or an equation system, is a finite set of equations for which common solutions are sought.

A linear equation is an equation that has the variable of the highest power of 1. The standard form of a linear equation is of the form Ax + B = 0.

We are given that;

Equation 3(x-7) – x=2x-21

Now,

To solve the equation, we need to simplify both sides and isolate x. We can do this by following these steps:

3(x-7) – x = 2x - 21 Expand the parentheses by multiplying 3 with x and -7:

3x - 21 - x = 2x - 21 Combine like terms on the left side by subtracting x from 3x:

2x - 21 = 2x - 21 Subtract 2x from both sides to eliminate x:

-21 = -21 This equation is always true, regardless of the value of x. This means that the equation has infinitely many solutions. Any value of x will satisfy the equation

Therefore, the answer of the given equation will be  infinitely many solutions

Learn more about linear equations;

https://brainly.com/question/10413253

#SPJ7

Answer:

€24

Step-by-step explanation:

If he had €80 and spent 0.3 of it, he spent 30% or 30/100 of it.

€80*[tex]\frac{30}{100}[/tex] =  €80*[tex]\frac{3}{10}[/tex] =  €24.

Please mark as brainliest!

Answer:

B

C

A

D

E

Step-by-step explanation:

i know this is due in 10 mins so i didnt want to waste time aha

but ill gladly give an explanation later

Answer:

See below.

Step-by-step explanation:

A) a⁴ => Some number to the power of four

B) y - 4 => Four less than an unknown number

C) z / 4 => Quotient of a variable and four

D) 4x => Four times an unknown value

E) b + 4 => Four more than some number

Answer:

∠ 2 = 40°

Step-by-step explanation:

∠ 1 and ∠ 2 are corresponding angles and congruent, thus

∠ 2 = ∠ 1 = 40°

Given parameters:

   First sets of staircase  = [tex]\frac{1}{2}[/tex]

   Next sets  = [tex]\frac{1}{3}[/tex]

    Third sets  = [tex]\frac{1}{8}[/tex]

Unknown:

The least possible number of steps =?

Solution:

The least possible number of steps will be the lowest common multiples of these sets of steps.

We want fractions that will give whole numbers because realistically, one cannot take half a step of a step.

 So, the number of steps must be a multiple of denominators of the fractions given.

   Denominators are 2 , 3 and 8

     Their least common multiple is 24;

    This the lowest number by which 2, 3 and 8 can all divide.

So, the least number is 24 steps

Answer:

280 inches

Step-by-step explanation:

The area can be found by looking at each shape individually.

The area of the square can be found my multiplying the length by the width...
14*14 = 196 square inches

The area of the triangle can be found by multiplying the base by the height and dividing by 2...
A = b*h/2 (or some text books say half of the base times the height)

We knot the height of the triangle is 12 inches, and the base is implied as it shares a side with a square which has 4 equal sides of 14 inches.  Therefore
A = (14*12)/2 = 84 square inches

We get the total area by combining the two segments...
Area (triangle) + Area (square) = Area (total)
84 + 196 = 280 square inches