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4 years ago

If all angles are 108 degrees how many sides is there for a regular polygon

1 answer:

7 0

Sum of interior angles = 180(n-2)
Where n= the number of sides in the polygon

A polygon is called a regular polygon when all of its sides are the same length and all of its angles are the same measure.A regular polygon is both equilateral and equiangular. To find the sum of its interior angles, substitute n = 5 into the formula 180(n - 2) and get 180(5 - 2) = 180(3) = 540°

Since the pentagon is a regular pentagon, the measure of each interior angle will be the same.
To find the size of each angle, divide the sum, 540º, by the number of angles in the pentagon.
(which is the same as the number of sides).
540° 5 = 108°

There are 108° in each interior angle of a regular pentagon. N=8

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Compare the doubling times found with the approximate and exact doubling time formulas. Then use the exact doubling time formula

g100num [7]

The population after 15 years become according to the doubling time is 470000000.

According to the statement

We have given that the nation of 200 million people is growing at a rate of 9% per year.And we have to find that the What will its population be in 15 years.

So, For this purpose, we know that the

The doubling time is the time it takes for a population to double in size/value. It is applied to population growth etc.

So,

Population of nation is 200 million and growing at a rate of 9% per year.

So, 9% of the population is

Percentage population = 9/100*200,000,000

Percentage population = 9* 200,000,0

Percentage population = 1800,000,0.

It means 18000000 number of population is increased per year.

So, The total population increased in 15 years is 15*18000000

The total population increased in 15 years is 270000000.

The population after 15 years is 270000000 + 200,000,000

The population after 15 years is 470000000.

So, The population after 15 years become according to the doubling time is 470000000.

Learn more about doubling time here

brainly.com/question/16407547

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6 0

2 years ago

Sung drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 10 hours. When Sung drove

liraira [26]

Sung drove to the mountains

s₁=speed when Sung drove to the mountains.
t=10 hour.
d=distance.

s₁=d/t
s₁=d/10 hour ⇒s₁=d/10 (1)

Sung drove home:
s₂=speed when Sung drove home.
t=7 hour

s₂=s₁+18 miles/hour
s₂=d/7 hour ⇒s₁+18 miles/h=d/7 hour ⇒ s₁+18=d/7 (2)

Whit the equations (1) and (2) make a system of equations:
s₁=d/10
s₁+18=d/7

we can solve this system of equations by substitution method.
d/10+18=d/7
least common multiple=70
7d+1260=10d
7d-10d=-1260
-3d=-1260
d=-1260/-3=420

Answer: distance= 420 miles.

7 0

4 years ago

Ms. Lane teaches two sections of math class. Below are the results of a pop quiz she gave each section. Which section’s data sho

Mkey [24]

Answer:

D. Section A; students in this section scored between 1 and 10

Step-by-step explanation:

This answer is correct because the graph shows everything that was explained in the answer. Hope that helps!!

4 0

3 years ago

Which of the following statements about parallelograms are always true?

Nady [450]

A. Opposite sides are parallel is correct, because if opposite sides were not parallel, it would be a trapezoid, not a parallelogram.

4 0

3 years ago

PLEASE HELP I really need help with it:/

Luda [366]

Answer:

q = 14

Step-by-step explanation:

We know that:

39 + (4q - 5) = 90°

Solution:

34 + 4q = 90°
=> 4q = 90 - 34
=> 4q = 56
=> q = 56/4
=> q = 14

Hence, the value of q is 14.

7 0

3 years ago

Read 2 more answers