what is the sum of the interior angle measures of a polygon that has 20 sides

Answers

Answer 1

Answer:

3240°

Step-by-step explanation:

Formula is ( 2n-4)90° where n is the no of sides

(2×20-4)90°

(40-4)90°

36×90

3240°


Related Questions

A reflection is a flip over the

Y-axis

Line of reflection

X-axis

Answers

Answer

LINE OF REFLECTION

Step-by-step explanation:

In geometry, reflection basically just means flipping things over a line.

6m+27=8.25m
m=?
HELPPP

Answers

Answer:

12

Step-by-step explanation:

This is correct. Trust me.

I'm glad I could help:)

6m+27=8.25m

You have to subtract 6m on both sides first.

6m+27=8.25m

-6m       -6m

27=2.25m

Now we divide 2.25 from both sides.

27=2.25m

/2.25 /2.25

12=m

---

hope it helps

I need help with my homework please scan this. (Its Fractions)

Answers

Answer:

ok...

Step-by-step explanation:

sus but ok

Someone help please and please make sure the answer is right

Answers

Answer:

the answer is 7

Step-by-step explanation:

-5
X + 80 = 75
-5 + 80= 75

only need help on 10!

Answers

Answer:

median 6.5

mean 6.166

range 6

Step-by-step explanation:

A ladder is leaning against
a brick building as shown in the figure. What
is the length of the ladder?
x ft
20 ft
15 ft

Answers

Answer:

25 ft

Step-by-step explanation:

This is a right triangle, so we can use the Pythagorean theorem

a^2+b^2 = c^2  where a and b are the legs and c is the hypotenuse

15^2 + 20 ^2 = x^2

225+400= x^2

625 = x^2

Take the square root of each side

sqrt(625) = sqrt(x^2)

25 = x

What is the distance between points (-3,2) and (-9,2) on the coordinate plane?

Answers

Answer:

distance is 6

Step-by-step explanation:

HELPP PLZZZ I NEED TO FIND WHAT GOES IN THE QUESTION MARK
(10x^2+10x^3-9x^4)-(4x^3+?-8x^2)=-19x^4+6x^3+18x^2

Answers

?=10x^4 hope this helps

A circle has an area of 127 cm?. Find its circumference. (Round your answer to the
nearest tenth.

Answers

≈39.95

A Area  

127

d

r

r

r

d

d

C

A

Using the formulas

A=πr2

C=2πr

Solving forC

C=2πA=2·π·127≈39.94908

Answer:

39.95

Step-by-step explanation:

what is 2g-3+11-8g simplified please help me

Answers

Answer:

Step-by-step explanation:

2g-3+11-8g= -6g+8= 2(-3g+4)

GH∥IK. Find GK. I need help with this please

Answers

Answer:

Step-by-step explanation:

22

hi please help i’ll give brainliest please

Answers

Answer:

its c

Step-by-step explanation:

Answer:

28y + 63 (second option)

Step-by-step explanation:

7(4y + 9)

7 x 4y (28y)

7 x 9 (63)

you would multiply 7 and 4y to get 28y and then multiply 7 and 9 to get 63 and you would add the plus sign to get the full answer which is 28y+63

A school band gives a year-end concert. It is held in a 400-seat auditorium. Each concert ticket sells for $10, and 85% of the tickets are sold. How much money does the band earn from the sale of the tickets?

Answers

Answer: $3,400

Step-by-step explanation:

There are 400 seats in the auditorium which means that there are 400 tickets to be sold.

85% of these tickets are sold. The number of tickets sold is:

= 85% * 400

= 340 tickets were sold.

Each ticket sells for a total of $10.

The amount of money made from ticket sales is therefore:

= No. of tickets sold * price of ticket

= 340 * 10

= $3,400

Rachel is a stunt driver, and she's escaping from a building that is about to explode!
The variable d models Rachel's distance from her exit (In meters) t seconds after the cameras began recording the stunt

What is Rachel's speed?​

Answers

Answer:

The variable d models Rachel's distance from her exit (in meters) t seconds after the cameras began recording the stunt. d = - 38t

Step-by-step explanation:

From given, we have,  The expression that represents the Rachel's distance is given by, d = - 38t + 220                                                                      

where, d represents the distance in meters

            t represents the time in seconds                                                              

 

We know that, speed = distance by time.  Therefore, we need to differentiate the given equation w.r.t to time to find the speed.

we have,  d/dt (d) = d/dt [- 38t + 220]

| d/dt (d) | = | - 38 + 0 |

s =  d/dt (d) = 38 m/s

Therefore, the speed of Rachel is 38 m/s.

Answer:

38 meters per second

Step-by-step explanation:

Hope this helps!

which number is composite 5,11,9,2

Answers

The number 11 is combosit

Answer:

11

Step-by-step explanation:

trust

Mark works at Target. He works 4 hours a day for a total of 120 days of the year. His hourly rate of pay is $12.50 . How much can he expect to make annually prior to deductions?

Answers

Answer:

$6000

Step-by-step explanation:

annual income = total hours worked x hourly rate

total hours worked = total hours worked per day x total days worked in a year

120 x 4 = 480

480 x 12.50 = $6000

I need answers!!!!!!!!!

Answers

the answer is the last option!!

Answer:

Reflection figure Q was flipped over the y-axis, the line of reflection.

Step-by-step explanation:

The figures have the same lengths but they are reflected.

Hope this helps! :)

In the figure, identify the types of angles in the table below .

Answers

Answer:

∠1 and∠3 = Supplementary Angles

∠4and∠5 = Complementary Angles

∠5and∠1 = Adjacent Angles

∠2and∠3 = Supplementary Angles

complete this please, i really need your help ")​

Answers

Answer:

²,2.5,2.5+10,25.0

may it help you

At a school, there are 526 students and 263 are girls. About how likely is it that a randomly chosen student will be a boy?

◯ unlikely
◯ somewhat likely
◯ very likely
◯ equally as likely as unlikely

Answers

-> equally as likely as unlikely
It‘s 50/50

please help me!

The tape diagram represents an equation.
Write an equation to represent the image

Answers

i’ve never done a tape diagram before (so this might be wrong). But I think it’s:

6t=9

If this is correct, I hope it helps :)

Answer:

1.5 x 6 = 9

Step-by-step explanation:

9/6 because 6 t's and then we get 1.5 and so we multiply that by 6 and get 9

Kenny wants to learn how to serve overhand in volleyball. When he practiced yesterday, he made 7 serves over the net for every 2 serves that did not go over the net.If Kenny attempted 36 serves yesterday, how many serves did he make over the net?

Answers

Answer: 28

Step-by-step explanation:

Given

Kenny made 7 serves over the net for every 2 serves that did not go over the net i.e. success rate of Kenny is

[tex]\Rightarrow \text{success rate}=\dfrac{7}{2+7}\times 100=\dfrac{700}{9}\%[/tex]

for 36 serves, applying the same success rate, it is

[tex]\Rightarrow \text{success rate}=\dfrac{700}{9}\times\dfrac{1}{100}\times 36=28[/tex]

Serves that did not make over the net is [tex]36-28=8[/tex]

Thus, Kenny will make 28 serves that make over the net

Find m<1
A.16
B.76
C.96
D.106

Answers

106 is the answer hope it really helps yhu

Simplify the following expressions:
1. 3.46 + 0.6729 + 246.10​

Answers

Answer: 250.2329

Step-by-step explanation:

Amy earned $25 after
babysitting for 3 hours. If
she dways charges the
same rate, how much will she
make after working for 7
hours

Answers

Answer:

58.33

Step-by-step explanation:

8.33 per hour

Mulitply by 7 and get 58.33

25/3 = 8.33

8.33 x 7
58.31

Answer: $58.31 but you can round this off to $58 also

What is the x-intercept for (-4,-4), (2,-2)

Answers

i'm pretty sure it's (8,0)

How to find a function value​

Answers

Answer:

To find function values is the process of evaluating the function for given values of x. Example #1 If f (x) = x 2 + 4x + 3, find function values f (0), f (-2), and f (3). f (0) = 0 2 + 4 (0) + 3

Step-by-step explanation:

Eight friends are going skiing. They are paying a group rate of $264 how much does each friend need to pay? Show your work

Answers

Answer: Each person pays 33 dollars.

Step-by-step explanation: If the group pays 264 dollars and we assume each person pays the same we divide 264/8 to get 33 dollars per person.

$264/8=$33
Each friend needs to pay $33

for each pair to triangles state the postulate or theorem that can be used to conclude that the triangles are congruent

Answers

Help me please help help

Answer:

did u get the answer please let me know i need it lol

Step-by-step explanation:

Please help me (If you don't know please don't answer)

Convince yourself that there are 3 similar triangles in the diagram. Choose the proportionality statement that represents the relationship among the 3 triangles.

Question options:
1. ABAC=ACCB=CBAD
2. ABAC=ADAC=CBCD
3. ABAC=ACAD=CBCD

Answers

Answer:

1

Step-by-step explanation:

bc its the anwser

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