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
Annette [7]
3 years ago
13

How many sides does a regular polygon have if each exterior angle measures 20?

Mathematics
1 answer:
Masteriza [31]3 years ago
7 0

Answer:

18 sides

Step-by-step explanation:

Each exterior angle of a regular polygon = 20 deg. So the polygon has 360/20 = 18 sides

You might be interested in
A right triangle has legs of lengths 9 cm and 12 cm. calculate the length of the hypotenuse?
just olya [345]
Let the legs of the triangle be a and b, and the hypotenuse c.

Your first instinct might tell you to use the Pythagorean theorem to go about solving this because c= \sqrt{a^{2}+b^{2}}. This works, but it is slow.

The fastest way to solve this is to recognize that the right triangle is a special triangle where the ratio of the sides are 3:4:5. This means that if the legs are 9 and 12, then the hypotenuse is 15 because 3*3 is 9, 3*4 is 12, and 3*5 is 15.
6 0
3 years ago
Read 2 more answers
830000 in scientific notation
DedPeter [7]

Answer:

8.3 * 10 ^5

Step-by-step explanation:

830000

To change this to scientific notation, we move the decimal 5 places to the left.  The exponent will be positive 5 because we moved it to the left

8.3 * 10^ +5

8.3 * 10 ^5

4 0
3 years ago
What can you tell about the mean of each distribution? Help plz for real!!
worty [1.4K]

Step-by-step explanation:

Mean=sum of observations/no. of observations

7 0
3 years ago
Tell whether the equation has one, zero, or infinitely many solutions:<br>9(x - 4) +15=9x – 21​
Mama L [17]

Answer:

Infinite solutions

Step-by-step explanation:

Simplify both sides, subtract 9x, and add 21x to both sides and you will get 0 = 0 so there is infinite solutions.

8 0
3 years ago
Sarfcae area is the _______ of all the _____________of the faces of a three diamentsilal figure.
Leya [2.2K]

Answer:

The sum of the areas of all the surfaces (faces) of a three-dimensional figure.

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • This is for my math review due tomorrow I need help!!
    13·1 answer
  • An electronic store makes a profit of $15 for every fitness tracker sold. The store wants to find how many fitness trackers they
    13·1 answer
  • I really need help with these questions, 5 STARS AND BRAINLIEST FOR WHOEVER HAS THE BEET ANSWER!!
    12·1 answer
  • What factors of 48 are multiples of 4
    13·1 answer
  • Brandon bought hot peppers to sell in the market.
    12·1 answer
  • Use the remainder theorem and the factor theorem to determine whether (y − 3) is a factor of (y4 + 2y2 − 4).
    12·2 answers
  • Mr. McGee mowed 4/5 of his lawn. His three sons finished the mowing. Each son mowed the same amount. How much of the lawn did ea
    14·1 answer
  • The answer to an addition problem is called a ___.\
    6·1 answer
  • The three side lengths of a triangle are given. Which triangle is a right triangle?
    10·1 answer
  • Write a equation of a line perpendicular to the line below in point-slope from that passes through the point (-2,6)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!