balalahanaa balalahanaa

24-06-2021
Mathematics

contestada

the size of an interior angle of a regular polygon is 3x. It's exterior is (x- 20)°. Find number if the sides of the polygon.

Respuesta :

04-07-2021

Answer: 12

Step-by-step explanation: Since the angles are supplements, 3x + x - 20 = 180. Solving this, we find that x = 50, and 3x = 150. Since dodecagons have interior angles of 150 degrees, the answer is 12 sides.

Answer Link

Otras preguntas

Which number is a rational number, an integer, and a whole number?

1.005 x 1.03 The work for it and solving

Which of these systems are responsible for breaking down food

Essica and Martha each have a bag of cookies with unequal quantities. They have 30 cookies total between the two of them. Each of them ate 6 cookies from their

Kayla is shelving books in the media center. She has to shelve 250 books on Monday and 157 books on Tuesday. Each shelf holds 25 books. She has to place any rem

A kennel has 16 employees to watch over 400 dogs. What is the ratio of dogs to employees?

On the fastest speedways, some drivers reach average speeds of 2 miles per minute. Write a formula that gives the number of miles M that such a driver would tra

What happens after a stream's discharge increases? Stream velocity, channel width, and depth all decrease. Stream velocity and channel depth increase, but chann

True or false: gold and coal were discovered in indian territory

Hypnosis is something used to treat anxiety disorders... True or False?