Answer:
33-9+40-(30+15) =
33-9+40+25-(30+15) =
3+21 x 6-(24-4) =
3+21 x 6-(24-4) x 2 =
(62 ÷ 2 – 3) x 3 +6 =
(62 ÷ 2 – 3) x 3 +6 x 2=
0.3+0.8+0.2=
30+30×0+1=
Step-by-step explanation:
Answer:
75 degrees.
Step-by-step explanation:
All interior angles of a triangle add up to 180.
So we can set up an equation: 65+40+x=180
105+x=180
x=180-105
x=75
It would be 56. The LCM of 14 and 8 is 56.
Answer:
25 minutes
Step-by-step explanation:
50÷10=5
5×5=25
hopefully this helps :)
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
