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
Vsevolod [243]
2 years ago
15

Help me plss need help with theses three

Mathematics
1 answer:
fiasKO [112]2 years ago
4 0
interior angle of a regular 18-gon.
It is easier to calculate the exterior angle of a regular polygon of n-sides (n-gon) by the relation
exterior angle = 360/n
For a 18-gon, n=18, so exterior angle = 360/18=20 °
The value of each interior angle is therefore the supplement, or
Interior angle = 180-20=160 degrees.

Naming of a 9-gon
A polygon with 9 vertices is called a nonagon (in English) or enneagon (French ennéagone, but the English version is sometimes used)
You had a good start with the correct answer.

Exterior angle of a 15-gon
The exterior angle of a 15-gon can be calculated using the relation given in the first paragraph, namely
Exterior angle = 360/15=24 degrees
You might be interested in
When you can walk to miles in 30 minutes how many miles can she walk in two hours
djyliett [7]
Easey

ratio and proprotion

or
knowlege


1. ratio and proportion
distance/time=2/30

2hours=60*2=120mins
xdistance
2/30=x/120
1/15=x/120
times boht sides by 120
120/15=x
8=x

8 miles


knowlege way
30 mins=1/2 hour
30 mins=1/4 of 2 hours
2=1/4 of 2 hours
2*4=8
8 miles
3 0
3 years ago
The shirt cost $113 less than the coat. The shirt cost $50. How much is the coat?
olga nikolaevna [1]
Shirt: $50
Coat: $113

$50+ $113= $163

The coat costs $163, hope this helps!
7 0
2 years ago
Write the equation in point slope intercept form of the line that passes through (6,-11) and is parallel to the graph of y=-2/3x
Alina [70]

Answer:

y+11=-2/3(x-6)

Step-by-step explanation:

To find the parallel line, we would just plug in the numbers in the point-slope form from what we're given. We have y=-2/3x+12 and (6,-11).

Point-slope form:

y-y1=m(x-x1) → y+11=-2/3(x-6)

m represents the slope, which is -2/3 in this situation.

y1 represents the y coordinate, which is -11 in this situation. However, when we plug in negative numbers in a point-slope form, we would do the opposite of the negative number, which is to make it a positive in point-slope form.

x1 represents the x coordinate, which is 6 in this situation.

8 0
2 years ago
Six divided by the difference of a number and 1​, minus 5 divided by a number plus 1​, equals 5 times the reciprocal of the diff
AleksandrR [38]
I am not very good you should probably ask someone else sorry
3 0
3 years ago
Pllsssss help <br> Explanation plsss
aleksklad [387]

Answer:

x = 17

Step-by-step explanation:

8x - 9 + 53 = 180 (collect like terms)

8x + 44 = 180 (subtract 44 on both sides)

8x = 136 (divide by 8 on each side)

x = 17

HOpe this helps!!

5 0
3 years ago
Other questions:
  • List all the number sets that apply to -3
    10·1 answer
  • Vicente has a prism- like water tank whose base area is 1.2 square meters. He bought 6 goldfish at the store and the store owner
    5·1 answer
  • Tanya is making goodie bags for her party. Each bag has 6 toys, 4 pieces of candy, and 12 stickers. There are _ stickers for eve
    14·2 answers
  • What do you use to repair a TUBA
    8·1 answer
  • Volume in barrels of a tank 38.622 feet in diameter by 16 feet in height
    11·1 answer
  • 2x+5y=-13 <br> 3x-5y=14<br><br> Solve for x and y
    5·2 answers
  • What is the slope of a line that passes through the points (-4,0) and (0,4)?
    10·1 answer
  • Write the equation of the line that passes through the point (-3, 6) and is parallel to the line
    7·2 answers
  • Plz help when you see this
    5·1 answer
  • Solve for the value of w.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!