Mathematics High School

Pls help How many sides does this regular polygon have? ​

Pls Help How Many Sides Does This Regular Polygon Have?

Answers

Answer 1

Answer:

9

Step-by-step explanation:

interior angle + exterior angle = 180°, that is

7y + 2y = 180

9y = 180 ( divide both sides by 9 )

y = 20

Then

2y = 2 × 20 = 40°

The sum of the exterior angles of a polygon = 360°

Divide the sum by 40 for number of sides (n)

n = [tex]\frac{360}{40}[/tex] = 9

Related Questions

A cylinder has a volume of 45pi and a radius of 3. What is it’s height?
It’s height is _____ units.

Answers

Answer:

       It’s height is 5 units.

Step-by-step explanation:

[tex]V=\pi R^2\cdot H\\\\V=45\pi\\R=3\\H=??\\\\45\pi=\pi\cdot3^2\cdot H\\\\45=9H\\\\H=5[/tex]

***Please help me with this giving a crown away ****
Sara ran 3.2 miles on Monday and another distance on Tuesday.

She ran a total of 6.1 miles on Monday and Tuesday.

How many miles did Sara run on Tuesday?

Enter your answer as the correct value, like this: 4.2

Answers

Answer:

2.9 miles

Step-by-step explanation:

If she ran a total of 6.1 miles then you just do 6.1 - 3.2 = 2.9 miles

Answer:

Sara ran 3.2 miles on Monday and another distance on Tuesday.

She ran a total of 6.1 miles on Monday and Tuesday.

How many miles did Sara run on Tuesday?

Enter your answer as the correct value, like this: 4.2

Step-by-step explanation:

Correct value: 3.1?

I think its right

HELP PLEASEE
A baker uses 63 cups of flour and 72 cups of water for a recipe. The flour to water ratio is 63:72 how much water does the baker need if he uses only 7 cups of flour?

Answers

Answer:

8 cups of water

Step-by-step explanation:

63/7=9

72/9=8

PLZ HELP I GIVE BRAINLIEST

Answers

9514 1404 393

Answer:

  2

Step-by-step explanation:

The recommended way to multiply mixed numbers is to convert them to improper fractions. Where there are factors that cancel, this works nicely.

  [tex]1\dfrac{2}{3}\times1\dfrac{1}{5}=\dfrac{5}{3}\times\dfrac{6}{5}=\dfrac{5\cdot3\cdot2}{5\cdot3}=\boxed{2}[/tex]

please help me with this problem

Answers

Answer:

6.75

Step-by-step explanation:

We are given that function

[tex]f(x)=\frac{9x-18}{4}[/tex]

5 is an element in the domain of f(x)

i.e

x=5

We have to find the corresponding element of 5 in the range of f(x).

Substitute x=5 in the given function

[tex]f(5)=\frac{9\times 5-18}{4}[/tex]

[tex]f(5)=6.75[/tex]

Hence, the corresponding element of 5 is 6.75 in the range.

PLSSSS HELPP MEEEE PLSS :((

Answers

Answer:

X.

Step-by-step explanation:

9 cows can eat all the grass in a field in 21 days.How many days would it take for 3 cows

Answers

The answer would be 63 days.

Answer:

63 Days

Step-by-step explanation:

Add my discord kisS_My_Axe101#8338

What is the value of y?

What is the value of x?

Answers

Answer:

y = 8 and x = 8 sqrt(3)

Step-by-step explanation:

sin(60)=x/16

16sin(60)=x

x=8 sqrt(3)

cos(60)=y/16

16cos(60)=y

y=8

Please help me fast!!!!!!!!!!

Answers

Answer: 4x-12x

Step-by-step explanation:

Distributive preoperty so -6*-2/3=4 and  -6*2x= -12x together 4x-12x equals option c

Answer:

You're going to myltiply -6 ×-2/3 which will equal positive 4 and -6 ×2x which is going to equal-12. So your answer is 4-12x

in which step was an error made?? plzz answer fasttt

Answers

Answer:

Step 1

Step-by-step explanation:

they forgot the negative

PLEASE HELP ME PLEASEEEEE

Answers

Step-by-step explanation:

radius=diameter/2

r = 6/2 m

=3m

volume of sphere=4/3πr³

= 4/3π×(3)³

=36π m³

(2, 14), (6, 34), (8,44), (x, 64). What is the value of x?

Answers

Answer:

12

Step-by-step explanation:

lins father is paying for a 20$ meal.he has a 15% off coupon.after the discount a 7% sales tax is applied. what does lins father pay for the meal.​

Answers

Answer:

35

Step-by-step explanation:

How many 12/4 are in 3

Answers

Answer:

There is one 12/4 in 3.

Step-by-step explanation:

12/4 = 3

4/4 + 4/4 + 4/4 = 12/4 = 3

omg please help me ASAP I reallly need my 100 backkkkkkkk

Answers

19, cuz 4x19 is 76 and 72<76

Answer:

well N= 18.5 you do the rest

Step-by-step explanation:

Write an equation of the given line that passes through the given point and has the given slope m
(-3,-11);m=1/2

Answers

y=mx+b
solve for b
-11=-3*1/2+b
-11=-1.5+b
b=-11+1.5
b=-9.5

What is the slope of the line through (-1, 4) and (1, -2)?
(1.4)
3
2
-1
2
3
4
1
-2
(12)
-3
O A. -3
B.
d
C. 3
< PREVIOUS

Answers

answering for the slope of the two points:
-2-4
1-(-1)
-6/2=-3
-3 is the slope

evaluate the expression 5 3 =

Answers

Answer:

Do you mean to multiply? you don't have any sign. if you meant multiply its 15, if you meant divide it's 1 2/3, if it's addition it's 8, if its subtraction it's 2

A TV that usually sells for $185.63 is on sale for 25% off. If sales tax on the TV is 5%, what is the price of the TV, including tax?

Answers

Answer: A TV that usually sells for $185.63 is on sale for 25% off. If sales tax on the TV is 5%, what is the price of the TV, including tax?

178.18 x 0.25 = 44.55

178.18 - 44.55 = 133.63 = sales price

133.63 x 0.05 = 6.68

133.63 + 6.68 = 140.31 = total price

Step-by-step explanation: That's how I solved it...

darlene uses 4 nails for every 12 inches of wood how many nails will she use in 6 feet of wood

Answers

Answer:

she will use 24 nails

Step-by-step explanation:

Brainliest plz

Answer:24 nails

Step-by-step

y = 7x + 10 y= -4x - 23

Or 7x + 10 = -4x - 23

I need to show my work too hurry!!

Answers

Step-by-step explanation:

7x + 4x = -23 - 10

or, 11x = -33

or, x = -33/11

or, x = -3

Therefore, x = -3.

Hope you got the answer.

answer question a and b please

Answers

The correct answers are:

a) difference in T between Rome and Oslo: 9 °C (11- 2=9)

b) T in Kiev at 6pm: 7 °C (1+6=7)

Which graph represents the solution to this inequality? -1/4(12x+8)≤ -2x+11

Answers

Answer:

c

Step-by-step explanation:

-3x-2[tex]\leq[/tex]-2x+11

+3x       +3x

-2[tex]\leq[/tex]x+11

-11     -11

-13[tex]\leq[/tex]x

The Sommers invested $5000 for three years at 6.5%. How much interest did the investment earn in three years? What was the total amount of the account after three years?

PLZ SHOW HOW YOU SLOVED IT! THX <3

Answers

Answer:

$1039.74 and $6039.74

Step-by-step explanation:

Ok so if this is growing exponentially and is giving 6.5% per year then you would do (5000*0.065) + 5000 which is 5325 then you would do (for year 2). (5325*0.065) + 5325 which is 5671.125. And lastly, you would do (5671.125*0.065) + 5671.125 which is 6039.74 (rounded answer).

Answer:

1.)$975.00

2.$)5,975

Step-by-step explanation:

5,000*3*6.5=975.00

5,000+975=5,975

Hope this helps :)

What is 4n-32? Factor your expression using the greatest common factor.

Answers

Answer:

4(n-8)

Step-by-step explanation:

take out 4 from 4n-32

so it's 4(n-8) coz 32÷4=8 so yeah

27 + 9x = 12x - 6
(Provide steps)

Answers

Answer:

Let's solve your equation step-by-step.

27+9x=12x−6

Step 1: Simplify both sides of the equation.

27+9x=12x−6

27+9x=12x+−6

9x+27=12x−6

Step 2: Subtract 12x from both sides.

9x+27−12x=12x−6−12x

−3x+27=−6

Step 3: Subtract 27 from both sides.

−3x+27−27=−6−27

−3x=−33

Step 4: Divide both sides by -3.

−3x

−3

=

−33

−3

x=11

Answer:

x=11

Step-by-step explanation:

What is the value of x in the equation 1.5(x + 4) – 3 = 4.5(x - 2)?

Answers

Answer:

The answer is x=4.

Step-by-step explanation:

Have a great day!

Find S? Please help, thank you :)

Answers

Answer:

If I am correct, the answer should be 70.1 degrees.

Carmen bought candy to go into
treat bags. The ratio of candy to
treat bags was 7:1. If she bought
84 pieces of candy, how many
bags would she need?ASAP

Answers

Answer:

12 treat bags

Step-by-step explanation:

I believe 12 because 84/7 is 12

I WILL AWARD BRAINLIST PLS SOLVE

Answers

Answer:

Ah yes rsm.

Anyways, AB is parallel to DE so 72= angle BDE. So BDE+2x+2x=180

72+4x=180

108=4x

x=27

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