1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
olga2289 [7]
3 years ago
9

WILL MARK BRAINLIEST! Can someone please help! I don't understand some of these questions :(

Mathematics
1 answer:
PolarNik [594]3 years ago
3 0

Answer:

18

Step-by-step explanation:

The interior and exterior angle of a polygon is supplementary

let interior be I

let exterior be E

I + E = 180

Since the interior angle is 8 times that of an exterior angle,

8E + E = 180          [replacing I with 8E]  

9E = 180                

E = 20                      

The exterior angle is 20 degrees

I + E = 180          

I + 20 = 180      

I = 160              

The interior angle is 160 degrees.

The equation to find the interior angle of a polygon with 'n' number of sides is:

I = ( (n − 2) × 180 ) ⁄ n

We know the interior angle, so plug it in and solve for n:

160 = ( (n − 2) × 180 ) ⁄ n      

160n = (n − 2) × 180            

160n = 180n − 360                  

-20n = -360                            

n = 18                                  

You might be interested in
I WILL MARK BRAINLIEST IN 5 MINUTES!<br> solve this and explain
miskamm [114]

Answer:

no, it's not.

Step-by-step explanation:

300- 284 = 16

284 - 236 = 48

236 - 156 = 80

156 - 44 = 112

for every one the top line goes up, the bottom line changes too, but it's not at a constant rate. it's not constant, therefore it cannot be linear.

the rate of change formula (or slope formula, they're the same thing) is :

y2- y1/ x2 -x1 and to solve it you plug in the points. x is the same a t and y is h

284-300/ 1-0

-16 /1

-16 (this is the rate of change between the first two points)

236- 284/ 2-1

-48/ 1

-48 (rate of change between the second and third points)

since the rate of change isn't constant, it's not possible for it to be a linear relationship.

7 0
3 years ago
A circular garden has a circumference of 113 yards. Lars is digging a straight line along a diameter of the garden at a rate of
marin [14]

Answer:

3

Step-by-step explanation:

Circumference = 2\pi r = \pi d, where r is radius, and d is diameter

d=113/3.14=35.987, which is approximately 36

At 12 yards per hour, it will take 36/12=3 hours

5 0
3 years ago
A spa employs 54 people. Management wants to gather data about current and future services for clients. A random sample of 22 em
Igoryamba

Answer:

c

Step-by-step explanation:

i choose (c) because that the answer

5 0
3 years ago
Alicia borrowed $15,000 to buy a car. She borrowed the money at 8% for 6 years. What is the interest rate she will pay for the l
Likurg_2 [28]
First convert the rate into a decimal.
8/100=0.08
Next put all those numbers 15,000, 0.08, and 6 into the equation A=P(1+(rt)).
This is how you do it.
A=15,000(1+(0.08*6))
A=15,000(1+0.48)
A=15,000(1.48)
A=22,200
7 0
3 years ago
Can you simplify 3/r + 7/r+3
Nutka1998 [239]
Combine the fractions by finding a common denominator. 
10r+9/r(r+3)
7 0
3 years ago
Other questions:
  • What is This answer68,404÷698
    11·2 answers
  • A cylinder holds 753.6 cubic centimeters of juice. The can has a diameter of 8 centimeters. What is the height of the can? Use 3
    11·1 answer
  • Hey there! can you please help me posted picture of question
    12·1 answer
  • At a price of 4.89 per pound, what is the cost 3.95 pounds of deluxe mixed nuts?
    11·2 answers
  • Can someone help me please solving these maths problems thanks.
    15·2 answers
  • Did do this right using PEMDAS <br><br> 8/2(2+2)<br> Solve: <br> 8/2(4)<br> 8/2*4<br> 8/8<br> =1
    7·2 answers
  • One number is 36 less than another number if the sum of the two numbers is 104 find the two numbers
    14·1 answer
  • Po is trying to solve the following equation by completing the square:$$49x^2+56x-64 = 0.$$He successfully rewrites the above eq
    7·1 answer
  • HELP
    9·2 answers
  • A swimming pool is 65.25 feet long and 40.5 feet wide. How much longer is the pool than it is wide? 24.35 105.75 1.61 24.75
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!