How many sides does a decagon have?

sides

Answers

Answer 1

Answer:

It has 10 sides.

Step-by-step explanation:

Answer 2

Answer:

12 sides.

Step-by-step explanation:

A good way to remember this is "decagon" is called that because it has 12 sides, and the month December is the 12th month of the year.


Related Questions

y = 6x -14 & y = -8x

Answers

Answer:

x = -1

Step-by-step explanation:

y = 6x - 14   y= -8x

6x-14 = -8x

- 6x

-14 = 14x

x = -1

What's the difference between magma and lava

A) there isn’t a difference, they are just two names for liquid rock- Lava is liquid rock above the surface of the Earth, and magma is liquid rock below the surface of the earth .

B) Magma and lava are two different matter. Lava is hot, liquid rock; magma is hot, soft, solid rock

C) Magma and Lava are different temperatures- magma is hot, and lava is cold

Answers

I am pretty sure the answer is B

Answer:

A

Step-by-step explanation:

MAGMA is below surface

LAVA is whats above surface

What is the equation of the circle in center - radius form: x² + y2 + 12x -107 -7 = 0?
(x +12)2 + (y - 25)2 = 68
(x +6)2 + (y - 5)2 = 61
(x - 6)2 + (y + 5)2 = 68
(x +6)2 + (y - 5)2 = 68

Please help will give BRAINLIEST

Answers

Answer:

D

Step-by-step explanation:

We have the equation:

[tex]x^2+y^2+12x-10y-7=0[/tex]

And we would like to convert this to an equation for a circle.

This will require completing the square. Thus, let’s factor group our factors. We will also move the constant to the right. Therefore:

[tex](x^2+12x)+(y^2-10y)=7[/tex]

To complete the square, we divide the b term by 2, square it, and then add the resulting constant to both sides.

Therefore, for the first term, we will have 12/2. 12/2 is 6. 6 squared is 36.

Hence, we would add 36 to both sides.

For the second term, we have -10/2. -10/2 is 5. 5 squared is 25. Hence, we would add 25 to both sides.

This yields:

[tex](x^2+12x+36)+(y^2-10y+25)=7+36+25[/tex]

We can now factor the two terms using the perfect square trinomial pattern. We will also add on the right. Hence, our equation is:  

[tex](x+6)^2+(y-5)^2=68[/tex]

Therefore, our answer is D.

Which form of the quadratic equation would be the BEST to use when needing to identify the x-Intercept(s) of a parabola?
A) Vertex Form
B) Factored Form
C) Linear Form
D) Standard Form

Answers

The answer to this question is C

PLEASE HELP!!
You need to factor by grouping.
Please explain the steps!

Answers

Answer:

3(k-4)(7k^2+5)

Step-by-step explanation:

1) Factor out GCF

3(7k^3-28k^2+5k-20)

2)Split into two

3) Factor

3*7k^2(k-4)+5(k-4)

3(k-4)(7k^2+5)

a case bottle water contains 24 bottles . each case contains a total of 405.6 ounces of water wich equation represents the relationship between ounces of water , y,and number of bottles,x

Answers

Answer:

y = 16.9x

where y is the ounces of water

and x is the number of bottles

Step-by-step explanation:

Here, we want to find the relationship between ounces of water y and number of bottles x

From the question, we can find the amount of liquid in each bottle

Mathematically, that will be 405.6/24 = 16.9 ounces

There is 16.9 ounces of water per bottle

So the relationship we want to write is that;

y = 16.9x

Given the diagram below. If G is the circumcenter of ABC. DC = 16, GB = 21 and AZ = 19, find each measure.​

Answers

Answer:

Step-by-step explanation:

Properties of a circumcenter;

1). Circumcenter of a triangle is a point which is equidistant from all vertices.

2). Point where perpendicular bisectors of the sides of a triangle meet is called circumcenter of the triangle.

From the picture attached,

9). AG = GB = GC = 21

10). BC = 2(DC)

            = 2×16

            = 32

11). By applying Pythagoras Theorem in ΔGFB,

     GB² = GF² + FB²

     (21)² = GF² + (19)²

     441 = GF² + 361

     GF² = 441 - 361

     GF = [tex]\sqrt{80}[/tex]

     GF = 8.9

12). By applying Pythagoras theorem in ΔGDB,

     GB² = DG² + BD²

     (21)² = (DG)² + (16)² [BD = DC = 16]

     DG² = 441 - 256

     DG = √185

     DG =  13.6

Which number goes in the box?
8 + 9 = 9 +

Answers

Answer:

8

Step-by-step explanation:

I hope this helps you out!

Answer:

8

Step-by-step explanation:

...

HELP!

Which relation is a function?

Select all that apply.

Answers

Answer:

A,B,D

Step-by-step explanation:

A,B,D is the answer Hhhhh

What is the value of the function y = 2x + 3 ⁢when x=−1?


5

2

1

​−5​

Answers

The value of the function is 2

The Correct Answer is; {C} 1

I took the test.

Jason use 65 books in 1 month .How many will he use in 7 days?​

Answers

Answer:

16.25 books

Step-by-step explanation:

assuming there are 4 weeks in a month, divide 65 by 4.

Answer:

16  or 16.25

Step-by-step explanation:

You might have to round idek if you meant read or used so

In a survey of 2,800 people who owned a certain type of​ car, 1,400 said they would buy that type of car again. What percent of the people surveyed were satisfied with the​ car?

Answers

Answer:

50% of people would buy the car again.

Step-by-step explanation:

2800 divided by 2 is 1400.

The percent of the people surveyed were satisfied with the​ car is 50%.

Given that,

In a survey of 2,800 people who owned a certain type of​ car, 1,400 said they would buy that type of car again.

Based on the above information, the calculation is as follows:

[tex]= 1400 \div 2800[/tex]

= 50%

Learn more: https://brainly.com/question/10309631?referrer=searchResults

This is my question,
Hannah wants to buy a $570 camera. She can save $50 each week from her paycheck. However, before Hannah can buy the camera, she must give her brother $80 that owes him. For how many weeks will Hannah need to save before she can pay back her brother and buy the camera.

Thank you so much, I really appreciate it!!

Answers

Answer:

9 weeks

Step-by-step explanation:

GIVING 50 POINTS FOR A CORRECT ANSWER QUICK
(I need help like..really quick so..please help lol)

Answers

Answer:

M represents the slope

Answer:

The number being multiplied by x or the slope

Step-by-step explanation:

Pt.2 Please show your work
Find the slope when given the following points
(-3, 2) and (1, 0)

Answers

Answer:

slope is = -1/2

Step-by-step explanation:

y2-y1= 2-0= 2

x2-x1= -3-1= -4

2/-4= -1/2

using the slope formula... y-y
m=___
x-x

it would be 2-0 OVER (fraction formula shown above) -3-1

so your end fraction would be 2/-4 which would be -0.5

so, your slope would be -0.5

y = -4x + 6
y = -2x - 2

Solve for x and y

Answers

Answer:

(4,-10)

Step-by-step explanation:

You set them equal to each other.

You get x=4

Sub in 4 for one of the equations

y=-10

Solve for x in y = -4x + 6.

x = −y/4 + 3/2

Solve for x in y = -2x - 2.

x = −y/2 −1

Nothing can be done with y = -4x + 6 and y = -2x - 2

what are you doing for Christmas?

Answers

I'm probably doing nothing...

I might visit my grandparents tho because they recently moved near by

thanks for the points

Answer:

I might go see my cousins in a different state and most likely play with the snow out there!!

Step-by-step explanation:

Buddy and his team have been asked by NASA to make a space shuttle cake (a scale model shaped like the one to the left) for a fundraising event. The original space shuttle has a height of 184 ft and a wingspan of 78 ft. Buddy and his team decide to construct the cake on-site so that they do not have to worry about transporting it. Buddy decides to make a cake with a wingspan of 10 ft and asks one of his decorators, Ivette, to calculate the height of the cake. Ivette decides that the cake should be approximately 4 ft tall.

Answers

Answer:

Ivette is wrong and by a lot. The spaceship should be 23.59 feet high

Step-by-step explanation:

The relationship between the spaceship's height and width = 184 feet : 78 feet ≈ 92 : 39 ≈ 9.2 : 3.9. This means that for every 3.9 feet wide, the cake should be 9.2 feet high.

In this case, the spaceship is 10 feet wide, so it should be (10 / 3.9) x 9.2 =  23.59 feet high.

When you make scale drawings or scale cakes, you must keep the same proportions as the original model.

Which axis is the vertical (up-down) one?​

Answers

the vertical axis is the y-axis and the horizontal axis is the x-axis

Answer:

y is the vertical, x is the horizontal

Please help, please write a proof to prove the “prove” section

Answers

it’s the triangle 1244

1.
Is the following statement a good definition? Why?
An integer is divisible by 100 if and only if its last two digits are zeros.

Answers

Answer:

It is, because it is clear and true. It also gets straight to the point.

Step-by-step explanation:

1. Solve for x: 7x + 15 = 38 (5 points) (A.23/7) (B.53/7) (C.23) (D.53)​

Answers

Answer:

A. 23/7

Step-by-step explanation:

Step 1:

7x + 15 = 38          Equation

Step 2:

7x = 23         Subtract 15 on both sides

Step 3:

x = 23 ÷ 7          Divide

Answer:

x = 23/7

Hope This Helps :)

Answer:

23/7

Hope this helps..

I am not sure with the answer..

but I think it's correct

how to solve this problem by finding x​

Answers

Answer:

X=140

Step-by-step explanation:

Firstly, any Quadrilateral has a total sum of its angle equal to 360 degrees

The attachment you are showing us shows that we already know two angles

(70)&(60) degrees. I am assuming the line DC is a tangent, so angle ADC must be 90 degrees since a full angle on a tangent is equal to 180 degrees and there is 90 from the other side (180-90=90). Now we know 3 angles and what you have to do is find X so that when you add them all up they make a sum of 360.

X+70+60+90=360

X=360-70-60-90

X=140

ticket for a pantomime cost $80 for children. A party of 25 pays $143 in total. how many adults were there in the party?
can anyone answer this?
can anyone answer this

if f(x)=2x^2-3x+9, then calculate f(8)

Answers

Answer:

f(8)= 113

Step-by-step explanation:

f(8)= 2(8)^2-3(8)+9

f(8)= 2(64)-3(8)+9

f(8)= 128-24+9

f(8)= 113

(USE PEMDAS)

HELP PLEASE!!

“I think of a number, double it, and add twelve. My answer is 54.” What number am I thinking of?

Answers

Answer:

21

Step-by-step explanation:

21 + 21 = 42

42 + 12 = 54

so 21 is your answer

Answer:

21.

Step-by-step explanation:

For questions like this, it's easiest to work your way backwards from the answer to get the original number.

In this case, you subtract 12 from 54, which gives you 42 (54-12=41)

Then, you divide by 2, the opposite of "doubling". 42 ÷ 2 = 21.

Since there are no other operations, your original number is 21.

To confirm, just go through the problem again starting with 21 and seeing if you get to 54.

21, doubled (42), add 12 = 54.

If there are 52 calories in one chicken nugget and 39 calories in one waffle fry, write an expression to represent the total number of calories consumed if you eat c chicken nuggets and w waffle fries. Next, find out total number of calories consumed if you ate 5 chicken nuggets and 10 waffle fries.

Answers

Equation: y = 52c + 39w
Plug in 5 for c and 10 for w
52(5) + 39(10) = 260 + 390 = 650 calories

Multiply calories per nugget by number of nuggets and add to calories per waffle multiplied by number of waffles:

Total calories = 52c + 39w

Now replace the variables with the quantities and find total calories:

Total = 52(5) + 39(10)

Total = 260 + 390

Total = 650 calories

The y-intercept of any straight non-vertical line refers to the y-value of the point where the line crosses the y-axis - that is , where the x-coordinate is zero.

This can be (choose all that apply)



Group of answer choices

the change of the y-coordinates divided by the change in the x-coordinates

be always the location of the line in the xy coordinate system-that is, where the line hits the y-axis.

always be the location of the line in the xy coordinate system where the line hits the x-axis

the initial value of the output variable when the input variable is time. The y-intercept has an x-coordinate of zero, so if the input variable is time, the y-intercept is referred to as the starting value.

Answers

Answer:

see below

Step-by-step explanation:

Answer choices:

A. the change of the y-coordinates divided by the change in the x-coordinates

slope

B. be always the location of the line in the xy coordinate system-that is, where the line hits the y-axis.

y-intercept

C. always be the location of the line in the xy coordinate system where the line hits the x-axis

x-intercept

D. the initial value of the output variable when the input variable is time. The y-intercept has an x-coordinate of zero, so if the input variable is time, the y-intercept is referred to as the starting value.

y-intercept

Sheldon needs to buy 9 gallons of ice cream for a family reunion. The table shows the prices for different
sizes of two brands of ice cream.
View Exal
Step-by-
Cold Farms
Sweet Dreams
Price of small size
$4.50 for 1 pint
$2.25 for 1 quart
Price of large size
$8.50 for 1 quart
$5.50 for 1 gallon
Video Tut
Textbook
Which size container of Cold Farm ice cream is the better deal for Sheldon? Complete the explanation to
justify your answer.
Print
72 pints of Cold Farm ice cream cost $[ and 36 quarts of Cold Farm ice cream cost $
(select) size container is the better deal for Sheldon.
The

Answers

9514 1404 393

Answer:

$324 for 72 pints$306 for 36 quartslarger size is better deal

Step-by-step explanation:

The cost of 72 pints is 72 times the cost of 1 pint:

  72 × $4.50 = $324.00 . . . cost of 72 pints

The cost of 36 quarts is 36 times the cost of 1 quart:

  36 × $8.50 = $306.00 . . . cost of 36 quarts

__

The price for quart containers is lower, so the larger size is the better deal.

hello, I need help with this! also could you please explain how you did it, thank you! :)

Answers

Answer:

-7

Step-by-step explanation:

-2(4 - 5 ) - 1(2 - 5)^2

-2(-1) - 1(-3)^2

2 - 1(9)

2 - 9

-7

Hope this helps. Pls give brainliest.

Answer:

-7

Step-by-step explanation:

given an equation in standard form solve for y and graph 3y+x=6

Answers

Answer:

y= -1/3+2

Step-by-step explanation:

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