![kbell182005](/avatars/38349.jpg)
kbell182005
01.10.2019 •
Mathematics
In a quadrilateral, a student can draw two diagonals. in a pentagon, a student can draw five diagonals. in a hexagon, a student can draw nine different diagonals. how many diagonals can be drawn in a regular polygon that has 17 sides?
Solved
Show answers
More tips
- C Computers and Internet Protect Your Computer: How to Set a Password on Your Device...
- W Work and Career How to behave at an interview? Tips from an HR specialist...
- F Family and Home How to Keep Your Home Warm: Tips and Tricks...
- D Dating, Love, Relationships Does a Person s Character Depend on the Color of Their Eyes?...
- O Other Childhood Fears: What Many of Us Experienced...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
Answers on questions: Mathematics
- M Mathematics Give an ordered pair that is NOT a solution to 2x-4y ≥ 12....
- M Mathematics Solve the right triangle. Round decimal answers to the nearest tenth. E D 8 14 1 F DE ~ ,mZE ~ MZD...
- M Mathematics There are 183 coins worth $12.63. There are only quarters and pennies. How many quarters and pennies are there?...
- M Mathematics Can someone help me pls...
- M Mathematics A three fourths full of sugar weighs 12 kilograms. How many kilograms does it weight when full?...
- M Mathematics HELP PLZ BAINLIEST .HW DUE AT 5:00...
- M Mathematics Hello people :3 im bor/ed...
- M Mathematics Complete the magic square. [Hint: Every row, column and diagonal has the same sum.] ...
- M Mathematics Which is the first step in evaluating the expression 30 + 55 – (10 – 6) ÷ 2 x 5? 6 ÷ 2 2 x 5 10 – 6 30 + 55...
- M Mathematics Please help me with this fast cus i need to take a nap asap...
Ответ:
Let's assume a polygonal of n vertices.
Starting from of vertice we can reach n-1 vertices by 2 must be excluded.
So there are n*(n-1-2) possibilities but each possibility is counted twice
Number of diagonals = n(n-3)/2
Examples:
n=4==>#=4*(4-3)/2=4*1/2=2
n=5==>#=5(5-3)/2=5*2/2=5
n=6==>#=6*(6-3)/2=6*3/2=9
n=17==>#=17*(17-3)/2=119.
Ответ:
B. 6.47
Step-by-step explanation: