Mathematics High School

Find the area of the regular 18-gon with a radius of 3 mm.
Round to the nearest tenth.

Answers

Answer 1

Answer:

this becomes 1/2 * 6 * tan(10) * 3 which results in the area of one of the isosceles triangles is equal to 1.586942826 square units. since there are 18 of these isosceles triangles in the polygon, then multiply this by 18 to get area of the polygon with 18 sides is equal to 28.56497087 square units.

Follow me please

Mark brainliest

Related Questions

I need help fast!!!!

Answers

Answer:

B

Step-by-step explanation:

If $t$ is a real number, what is the maximum possible value of the expression $-t^2 + 8t -4$?

Answers

Answer:

NaN not one

Step-by-step explanation:

How can I solve "Ella is building a rabbit pen. The area of the rabbit pen is 50 square feet.
Each rabbit needs at least 4 square feet of space. How many rabbits can
the pen hold?"

Answers

I think

50/4= 12.5 rabbit pens

Hope it might helps you!

Answer:

12.5 rabbits

Step-by-step explanation:

So I guess I would say 12

Please help me, this is driving me crazy

Answers

Answer:

oops

Step-by-step explanation:

Please help lol ....

Answers

So basically isolate the X

4x>32
Divide both sides by 4

X> 8
unshaded dot on 8, pointing to the left

y=x-4
y=6x-10
the answers have to be seperate
x=?
y=?

Answers

Answe

Is here and answer because if there is than I can solve for x and y

Step-by-step explanation:

Juan plans to mix blue paint and red paint to create purple paint. The ratio of the number of gallons of blue paint to the
number of gallons of red paint is 1 : 3.
Part A
Complete the table to show how many gallons of red paint Juan needs for the given number of gallons of blue paint.
Number of Gallons of Blue Paint
Number of Gallons of Red Paint
1
2
3
4
5

Answers

Answer:

3

Step-by-step explanation:

Can you answer these 2 questions??

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answer: no
explanation: don’t feel like it.

I need help with this please

Answers

Answer:

5.5

Step-by-step explanation:

It asks for just the Stevens family, so the first sentence is a trick.

Take $49.50 and divide it by $9 an hour. You will end up with 5.5 hours.

if h hours and 20 minutes is equal to 380 minutes. What is h?
​

Answers

Answer:

3 hours

Step-by-step explanation:

Answer:

h = 6

Step-by-step explanation:

60*6 = 360

360+20 = 380 BD

A basketball game is 45 minutes long. 20 minutes have already been played. write an equation that represents how many minutes m are remaining. DO NOT SOLVE

Answers

45 - 20 = mOR m = 45 - 20Hope that helps!

Answer:

45-20 = 25

Step-by-step explanation:

AA, SAS, SSS or not similar ? help pls

Answers

I think SAS .,................

A designer builders a model of a bicycle the finished model is exactly the same as the original but smaller. The scale factor is 2:15 (A) ratio of height ☑️:☑️ (B)surface area ☑️:☑️ (C)volume ☑️:☑️

Answers

Answer:

a) The ratio of height is 2:15

b) The ratio of surface area is 4:225

c) The ratio of volume is 8:3375

Step-by-step explanation:

The scale factor of model to original is 2 :15

Please remember the concept, when scale factor is a:b

Then ratio of sides would be same a:b

The ratio of surface area is [tex]a^{2} :b^{2}[/tex]

The volume is [tex]a^{3} :b^{3}[/tex]

According to the concept,

The ratio of height is 2:15

The ratio of surface area is [tex]2^{2} :15^{2}[/tex] =4:225

The ratio of volume is [tex]2^{3} :15^{3}[/tex] =8 :3375.

Help please it’s algebra 2

Answers

Answer:

Please refer to the attachment

helpppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp

Answers

Answer:

What do u need help with

Step-by-step explanation:

Find thw product of (x+3)(x-3)(x+7)

Answers

Answer:

x^3+7x^2−9x−63

Step-by-step explanation:

can i please have brainliest

math help-
Please help me answer the question below, I will give brainliest thing to whoever helps and gets it correct, thank you!

Answers

Answer:

y = 1/2 x + 5

Step-by-step explanation:

slope (m) = (y'-y) / (x'-x)

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

y - 6 = 1/2 x - 1

y = 1/2 x + 5

Expand the following. In other words, remove the parentheses (brackets):
7x(3y - 4x + 2)
A 21xy - 28x2 + 14
B 21xy - 282 + 14
C21xy - 28x2 + 14x
D 21xy + 28xz + 14x

Answers

The answer is C because it is what you get when you distribute correctly.

Three of the four vertices of a rectangle are located at (4, 2), (7, 2) and (4, 8). a. What are the coordinates of the missing vertex? ( , ) b. Find the area and perimeter of the rectangle. Area = square units Perimeter = units

Answers

Answer:

a) The coordinates of the missing vertex = (7, 8)

b) Area = 18 square units

   Perimeter = 18 units

Step-by-step explanation:

a) We know three of the four vertices:

A: (4, 2)           C ______ D(?)

B: (7, 2)               |             |

C: (4, 8)           A |______| B  

To find the coordinates of the missing vertex we need to calculate the distance in the x-direction from point A to point B:

[tex] B_{x} - A_{x} = 7 - 4 = 3 [/tex]                    

Hence, the distance of point D from point C in the x-direction is:

[tex] D_{x} = C_{x} + 3 = 4 + 3 = 7 [/tex]

Now, to find the coordinate in "y" we need to calculate the distance in the y-direction between point C and point A:

[tex] C_{y} - A_{y} = 8 - 2 = 6 [/tex]  

Then, the distance of point D from point B in the y-direction is:

[tex] D_{y} = B_{y} + 6 = 2 + 6 = 8 [/tex]

Therefore, the coordinates of the missing vertex (point D) are:

[tex] D = (D_{x}, D_{y}) = (7, 8) [/tex]    

b) The area of the rectangle is:

[tex] a = (B_{x} - A_{x})*(C_{y} - A_{y}) = 3*6 = 18 units^{2} [/tex]

The perimeter is given by:

[tex] p = 2*(3 + 6) = 18 units [/tex]

I hope it helps you!          

Someone help me with this question

Answers

the answer is 7 because thats what photo math told me

Answer:

7

Step-by-step explanation:

(8+56)÷4-3^2

PEMDAS:

(64)÷4-3^2

PEMDAS:

(64)÷4-9

PEMDAS:

(16)-9

7

hope this helps

HELP HELP HELP PLSSSSSSS

Answers

verry very sorry for this

HELP ME ASAP BRAINLY :)) How many sides does a polygon have if its total interior angle sum is 4 times its total exterior angle sum?

Answers

Answer:

Step-by-step explanation:

If you are given the interior angle, just subtract that from 180 to get the exterior angle and then use the number of sides = 360 / exterior angle to find the number of sides. it's much easier. the number of sides is equal to 10. the sum of the interior angles is equal to 10 * 144 = 1440 degrees.
10 x 144 so that would be 1440

Please help me ????????

Answers

The answer is a. Have a great day and stay safe.

idiixixixjdjdodjdjdijxdjdjj​

Answers

Answer: 41

Step-by-step explanation:

You need to subtract the 82 by the 41 so 82-41 then you would find the missing part. Or you could add 4 to the 4 to make 8 and then add the 1 to the 1 to get 2

Graph 2.45 on the number line.

Answers

The line right before 2.5

3×- 5 =16 help please​

Answers

Answer:

x = 7

Step-by-step explanation:

Given

3x - 5 = 16 ( add 5 to both sides )

3x = 21 ( divide both sides by 3 )

x = 7

Answer: X= 7

Explanation:
(you need to get x by its self)

Step 1- add the (-5) over to the 16

Because to get rid of a negative or minus sign you need to do the opposite which is addition.

You’ll get: 3x=21

Step 2- divide the 3 off from 21
Because the ‘3x’ is acting as multiplication, and the opposite of multiplication is division

You’ll get: X=21/3
Which is X=7

D
(3x +94)
Kx + 18)
(2x - 4)
B
A
O
The diagram is not drawn to scale.
O
x = 1
-。
Please help ASAP

Answers

Answer:

i cant answer this one, its waaaay too confusing for me

Step-by-step explanation:

Plz help fast will mark the brainiest!!!

Answers

4.75 x 10^-5 is the answer in scientific notation!

-2x/3 + 11 = 14 please help me its not letting me put stuff I want

Answers

Answer:

x = -4 1/2

Step-by-step explanation:

-2x/3 + 11 = 14

subtract 11 from each side of the equation:

-2x/3 = 3

multiply both sides by 3:

-2x = 9

divide both sides by -2:

x = -4 1/2

(fog)(2) if f(x) = 3x + 1 and g(x) = x ^ 2 + 2

Answers

Answer:

(fog)(x)=f(g(x))=2(3x+2)−1=6x+4−1=6x+3=3(2x+1)

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