Mathematics High School

Which polygon has an interior angle sum of 1280º?

Which Polygon Has An Interior Angle Sum Of 1280?

Answers

Answer 1

Answer:

3rd shape as it hase 9 sides

Step-by-step explanation:

1260/ 180 =7

7+2 = 9 sided shape

Answer 2

The polygon with 9 sides has an interior angle sum of 1280º.

Hence, option c is true.

We have to give that,

In a polygon an interior angle sum of 1280º.

We know that,

The formula for calculating the sum of interior angles is,

( n − 2 ) × 180°

where n is the number of sides.

Here, an interior angle sum of 1280º

Hence,

(n - 2) × 180° = 1280°

Divide both sides by 180°

(n - 2) = 1280/180

n - 2 = 7

n = 7 + 2

n = 9

So, The polygon with 9 sides has an interior angle sum of 1280º.

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Related Questions

A fish tank holds 36 liters of water . Right now , it is only 75% full. How many liters of water are in the tank?

Answers

Answer:

27 Liters

Step-by-step explanation:

Do 36 (original number) divide by 4 to find how much 1/4 is. Then take that answer (9) and multiply it by 3 to get 3/4 because 75%=3/4.

Below is a net for a rectangular pyramid.



A rectangle is in the middle of the shape. Each side of a rectangle has a triangle sharing its base. The parallel triangles are congruent. The rectangle’s length is 15 in and the width is 4 in. The triangles on the sides have a base of 15 inches and a height of 10 inches. The triangles on the top and bottom have a base of 4 inches and a height of 10 inches.





What is the lateral surface area of the pyramid?

Answers

Answer:

B

Step-by-step explanation:

Answer:

A. It's 1/2

Step-by-step explanation:

how many students participated in this survey? pls answer

Answers

34 students participated in the survey

Answer:

10 students

Step-by-step explanation:

1+2+4+3= 10

pls solve both and show ur answers :))

Answers

Number 3 is x=5 and number 4 is x=63
3. x=-5
4. x=56
and you just multiply for four and divide for three

Wendy has x pairs of shoes. Her friend Dylann has 6 fewer pairs of shoes. Which
expression can be used to determine how many pairs of shoes Dylann has?

Answers

Answer:

did u find the answers to all of that quiz if u did can u tell me the right answers

Step-by-step explanation:

PLEASEEEE HELP ME I will give you brainliest

Answers

Answer:

13

Step-by-step explanation:

Answer:

X = 13 :D

Step-by-step explanation:

PLZZZZZZ HELP I DON'T WANNA GET IT WRONG

Rosa wants to buy a sweater that is on sale for 25% off. The original price of the sweater is $21.00. About how much money will Rosa save with the 25% discount?

Answers

Answer:

She will save $5.25

Step-by-step explanation:

21 x 25% = 5.25

Answer:

5.25

Step-by-step explanation:

100% -> 21

25%-> 5.25

what percentage of this 100 square grid is shaded?​

Answers

Answer:

80 percent

20 for the first shaded multiply with 4 and its 80

Answer:80%

About 80% I’d say

There’s 20 white blank spaces

100-20=80

Someone please help me answer this question. Thank you in advance.​

Answers

Answer:

D. 38.5 square units

Step-by-step explanation:

The area of an obtuse triangle can be figured out in the same way as any other triangle: ¹/₂bh. Substitute b and h for 11 and 7 respectively.

¹/₂(11(7))

1/2 * 77/1

77/2

The area of the triangle in this question is 38 1/2 (38.5) square units.

what is equivalent to (f+g)(4)​

Answers

Answer is:
4f + 5g

(F+g)(4)
Fx4 = 4g
Gx4= 4g


PLEASE HELPPPPPP!!!!
The line models a recipe for chicken pie the recipe calls for 14 ounces of chicken for the first 4 people the recipe calls for 6 ounces for each additional person
Part A write an equation for the line in slope intercept form where x is the number of additional people and y is the total number of ounces
Part B the other part is if you have 26 ounces of chicken how many people can you feed

Answers

Answer:

So I am not sure my answers are correct but I hope they help:

A. y = 6x+14

B. 6 people

Look at picture

skjdnisujwndijbd

Answers

skjdnisujwndijbd

2.5 hours

please excuse the blue , roots are -2,4

Answers

the answer is a i think

Which table of values represents a linear function?

Answers

Answer:

B is

Step-by-step explanation:

Use function Y=ax, try it on B and you will get a=-1.

others are not linear function.

123 students each gave 2 cupid to each student in school there's 6 council how many cupid did they evenly make for the 123 student

Answers

Answer:

each made 20.5

Step-by-step explanation:

123/6 = 20.5

A line has a slope of į and a run of 50.
Find the rise of the line. Type a numerical answer in the space provided.

Answers

Answer:

Blue box is 9

Orange box is 2

Step-by-step explanation:

Blue box is 9 other one is 2

I need the answer to number 6

Answers

Answer:

121

Step-by-step explanation:

All of the sides should add up to 900. 121 does that

the polynomial function f(x) is graphed below. fill in the form below regarding the features of the graph​

Answers

Answer:

Part A

The degree of f(x) is 7

Part B

The leading coefficient negative

Part C

There are 5 distinct real zeros and 2 relative minimum values

Step-by-step explanation:

From the of a polynomial from a graph of the polynomial, starting from the left, we have;

1) The graph touches the x-axis (horizontally) and then crosses, which gives a multiplicity of 3

2) The graph crosses the x-axis once going upwards with a multiplicity of 1

3) Next, the graph crosses the x-axis once going downwards with a multiplicity of 1

4) Next, the graph crosses the x-axis once going upwards with a multiplicity of 1

5) Finally, the graph crosses the x-axis once going downwards with a multiplicity of 1

Part A

The degree of f(x) is therefore, 3 + 1 + 1 + 1 + 1 = 7

Part B

The leading coefficient of a polynomial that has an odd degree power with a graph falls to the right and rises to the left, the leading coefficient is negative;

Part C

The number of zeros = 7 zeros

The number of identical zeros = 3 identical zeros

∴ The number of distinct zeros are 7 zeros - 2 identical zeros = 5 distinct zeros

The graph continues from +∞ to -∞, therefore, the number relative minimum value of the polynomial are the two minimum values

The number of relative minimum values = 2

Therefore, there are 5 real distinct zeros and 2 relative minimum values

What is the solution to the following system of equations?
f+ 3g = 15
f- g = 7

Answers

Answer:

g=2

f=5

Step-by-step explanation:

add g to the other side on the 2nd equation. you should get f=7+gnow replace the f in the top equation with 7+g. the equation should now look like 7+g +3g = 15combine like terms to get 7+4g=15subtract 7 from both sides to get 4g=8divide by four to get g=2now plug 2 in for g in the 2nd equation to get f-2=7add 2 to both sides and get f=5

Find the missing side rounded to the nearest tenth.
53°
11

Answers

Answer:

Step-by-step explanation:

sin(53°) = 11/x

x = 11/sin(53°) ≅ 13.8

Change x-2y=4 into slope-intercept form.

Answers

Answer:

y=1/2x-2

Step-by-step explanation:

PLS PLS PLS HELP IM TERRIBLE AT MATH :( !!!!

Answers

In order from top to bottom, your answer should be:

A

C

B

can anyone please help me with question need help please ​

Answers

Step-by-step explanation:

there is no reason in maths only the method

What is 2 ¼ as an improper fraction?

Answers

9/4 is the answer :)

Answer:

9/4

Step-by-step explanation:

2 1/4 = 4x2+1/4 = 9/4

"Y varies directly as x". If y = 3 when x = 24, find y when x = 10.

Answers

Answer:

24=10

Step-by-step explanation:

The value of y when  x = 10 is 5/4

If y varies directly as x, this is expressed as:

[tex]y \alpha x\\y = kx\\[/tex]

where

k is the constant of proportionality

If y = 3 when x = 24, then:

3 = 24k

k = 3/24

k = 1/8

In order to get the value of x when y = 10

Recall that y = kx

y = 1/8 * 10

x = 10/8

y = 5/4

Hence the value of y when  x = 10 is 5/4

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A. 10
B. 10√2
C. 20
D. 20√2​

Answers

Answer:

its would be (b)

Step-by-step explanation:

im sry if im wrong

3x-2y=10 7x=2y=30

yea no i dont know how to do this.

Answers

Download photo math and put the problem into it it will solve it

will mark the brainiest

Answers

Answer:

832

Step-by-step explanation:

When rounding to the nearest hundreth, any number with a tens digit under 5 will round down.

What is the volume of the rectangular prism?
90 cm
20 cm
30 TS

Answers

Answer:

60 x 90 = 5,400 cm^3 (cubed)

Step-by-step explanation:

Multiply them all together like, 90 x 20 x 30

Select the correct answer.

Which model represents the quotient?

Answers

Answer:

C?

Step-by-step explanation:

not really sure tho but

The third model represents the quotient, option C is correct.

What is Division?

A division is a process of splitting a specific amount into equal parts.

In division, we divide a number by any other number to get another number as a result.

The number which is getting divided here is called the dividend.

The number which divides a given number is the divisor.

And the number which we get as a result is known as the quotient.

Hence, the third model represents the quotient, option C is correct.

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